electroplating in your own shop

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Now : E lectrop la t:ing

in You r' O w n Shop

M e c h a n i c s

a n d H a n d i e r - a l tSECTION

_I

Ii.bench-top Fig y > o u carrmake

pu.ls , sh . iny, J . a . s t i l , 1 g metaU~,cGnllshes en teols and oraaments

~

lX _ 'N O , , 'L T _ , - h j ~ t l l ! , _ e , ' i ' V , " , ' _ ChiU,"f,l;er, , t t ; O l ( . ] . : P : I I ~ ,of glass fish bmb , fn: : I .1Ut116 dime

store, ~md l~ pruywo[} (J r • •d~o hoEd

tl,\''Q ~~]um:iTlIJ~1e l i e t C ' o o d f ; l S will, put you m

b u :s i1 1C 'S 'S t o exp]o~e t t ( r~~l(1n;~t]g~!gf :ie~~d: orJ 1 i ' l '- u ~ t :a lw O i r k •

E]e('h1)iplr[~,ing; the chemk'a~ pm ces :s W rJi

whid, one m etal : i : s t rlTIi~~:: ;( t ' J ' redd: l l~~t]y 00,allqt.he:r, becemes a $irr)!p]e~,~,ome.,shopper-

,atlO'U with~-he ~ f; l't u p $ hm , \, ~n l~erll;l.\Vithil.

you, eau pill gte,runit lg' coppeT,!mIickel, ozinc: finishes: on any iro ~ ,o r ,~~ooJobff ie~th,n YUIL] c..n ,a,u fI_ k iQ t ihe ~ ' ~ I : i l ; I b ; .You esa l 'il ll st p ro o f t o o ls ,ib l r, ig ll 't :e fl ll l, /p

hardware, even metmmZienonmetallic objects like ]e;]J~h~l"meavesj ~ l ] ; E l U ~ . p ln e , c , I I ) ! ! ' l I

or HOWlersto m~l-keUraiUi$~l,ll de~)fO;]ltion",aJ],jewel l-yo You can decmo ..etch nnd fu] :6I .y de

signs ill oopper ;rndibt,1l$iIi; ( " 1 l H i t ' . v o r k . Y ' O I J D malso he able to do e l e dwFQ[1 l1 ing . su~h amaking pe:rm1lnent copper rno][']s fI) , f~yp:~·rne-h'l[ C ;i.s t.irlg~" -

HQ~v , e lectf 'G;lJla~:i : l~gz""o ' , r i i• ."Vhemroii l l pa~an d ecb f:c 'C l1 iJF !:e[1 !t~hw l!g;h eertain c:h( ' lmieal :5Io]u~~()ns,~lrltf,dru from oJ~leeleC;l;~'(

(~he ~Ynooe) t 1 ] \ e - f[ t t r< ' !cb~, l to the other elee

medrimloMlltOOls: [illUnull't on .;lp!]a~e and

a P S winter

wo'rkshop

sP6Cl,4'-

SHMTL~N(;!;rnsOf:BRA5S,RODT,j..I~"'AO(5,D

1l'fIO ~ACiS

TO~i=iOVIOE'rE;Qi",U·ALB

"mp~u ei:l" I 1 ~L Ol'llrnb pr]\vC't Lo 11.~ill~ l;.U 1J ."1 S

It ,IJU '< n n dl nstat nrul me t.,~dell ml pnll\ -

~~~d" ikQ" f . l e~ ~l~~D!'ll~1t _hca~1 ~!t,c:ft ~~ ~t [l~].

l.!ilI~d 'U n .'i f 1 e ( . t J b l l l l . d:is~ (I f rm e ,g n ~ ab r J _~ lV .ucloth (rente!:). It's thea givel) ,UJi anod:ic etch-s : t l l ! ; : , P ! l ± f ! d c d fWl'll tfuep.b~lngr[lcI;(~anode h m : . i n

a t o , Q , n k of dlllLl te ~l.IllLlIie acid {right).,. 'Thl C ' E 1 r t h o c i e i~ n SC'rIlP o f sheet ( .'0 1 J 1 J ! eF , G m ; , bubbla, indkorlb:l fh,~ ]_lruCC. '; :S ~s wflrkh lg , i\nmhc l itchifl!makes stool feI..'!1!{lthtcVorntlk~L

N ic k el ~ 1 <Q I s h-aV er y thil'l 1 1 J i c l . ; d d,eI)O~~-is p nt!:In i1~ l hy 5!il l lopelUling I . , ] _ i n , i a il00il if.rnlll'i l fn ,eenthnde b ,1 ' f ] 1 ! l I II meld ~oJ,i lJ i t iOIl f nr : nh o l. ll:: t\,VlJmi!~tih\S ( 1d1 : ) " Any b u hW m th=~l f um1 ~li,ould

he: brushed Ol'!i'>")l!;y" The hood ' i l ; ; dlen lmmfe r r edto 3, lonk @ f ,c:,:0P'P.Io:; ~()hl,t~{1ri (.igill)' :m d giv ...1, substantial COP'Pt'I p lu te . 111:i~ .-.en.~,e:;;U [

IInocr]ayerfor the : b il l ]) laUng o f nk :k eJ i.

t r o d , ! ; ! ( tbeca~Thlooe). S O l :yO'll make the c~bOCli€: 'tireo b j e c t y o m : l w a n t ~ o p l ; ! ! 1 t ; e ( i J l 1 i J d t h e O i ! l J ] o d ea, , c l u : :m 'k o fIiffile'me~.rll~'ffiJJ;;t:tou want (0 dottle plating. As cur ..

r€41 tflo \v s. the Mode meta] s~owlydiSSiti~\1iesiathesQ]iIii!.tiona!!.!d. beOO:JuEfsfr,el l ; !n l I .etaWioo1i! i th:atare ~t~

h: ' , a !C tm: l~o tlile ob j ec t d]<Ji~'s to beplnted. TIlernO]]S

g rad u a]]y co llect o n ~hB o bjec t ~1 J.ndOeOiD1 '13 . c : . r y s : b 1 l 1 s

of pl,llire m,etal E , ' v c n ' t l t J l a 1 1 y , the cqrs:t'.1l]s'bu:ild u.pa

]n¥e~· oE :solidmeta:l,ilnd tlse lo!bject~s perm;anently

plated,In the 5 > e,t~ p, S l1 JO \ 'V lil he '1 ) c , hvO ! <Ji][JIm]JfII lllImi ba JJ I' s a re ,

u sed to carry c~~nent ~~c~rQ,ss the[)PS of thepl;!l,tE,'JIgt anks , o.ne represents O l~ ~nade ~:nd . t be atlu:lr t~e(: '[IIt.hode, Objects: to be p~a~ed <:Ind, the :pmting metalsar e !]uuply Im,lJig .[rom tb e hal'S Oil wire hQob;,111ere

are no ~ledr.k:-al eenneetiems tom:;!ke" ~Flid ~~"e:i)uspeniled. obj: !; !l () 't s can be q:u[ckDy :!lwil:ched. £rorno ne i~R:Illto al1 iO th~1 l. --

PJmi~Jg sol~~ti'mi!9.T he ,c he m .i.c nl 8o. [Uit i )O~1l yo u 'Use

d e p en d s on the k ind o : E metal !~h;;J:;twm fann the'pl!~e. Th.e i!dlJt~o[jmust ( . 'Oll ta~~' i lfn~e~ons ofth.epJ1atfn.g metal .iIll o rde r tD !ita:rt the cheuiteal p.l '(J!(!e~going, . A . co'p'Perp.btings()~utio[]. .~Oll instanee, mu s teontatn s~·meffee ,~YppelF[,()r~ to b egif:il w ith. A sthe :!iek m s are u ~"ed .1ll lp., ~he ()0'Ppe~' ano d e Is cb:;:he.dalvay to llmvide iJ . ·oons:ttlnt ~upp~:yof new enes,

The['e fl1tehvo bask' type~ of S(D]!l '!l:iOI]:S, add. andnJka]l1l11f 'l .Add baths :('01· copper. nk;!ce~,. and zinc:

:pJ.lting are the' : s i ro lP , le~~ tand. ilO ilfes ;t b)'~]oo. l ' l l i :m:y ' re

OOJi~edw[ th . lU1l 'm]ess meta l sa ]ts " g li ;J ine :r lJ lJ ]]YS·' I,df rl tes

O't Cll;~(ldc.ieS:jto poovk l e the free meta] io ns . M :iJd ngproportions m;~lil.·[cl':i!I:ic~d.~Il!dhe bal :h . s eM be usedO J ] ' ! ; roam !remperr ;) !t !J l. re o v e c t ~]w[gTe V'U,ii(~~Ol1jin. Cl'Irr,el1JJt

OrdilIDairl#" ]ffi(l!lHc;I~I}ld ,o :b~et i t ! ih~l l .J;)I }l;11Ul!'rh1g ~l.u;.ll',;'n-~...1\'~u~~~:t~pooL~ut~l.in~1Jg)lin..t OO['! lo , ' : : ion--wT

lOll ph~ te t hi (. ;' n~ ,[M~ \~';[y.

'rwo.t:.oinep];d~~~g i~ l~(ks~i'h~t'!bis\Y.~," l~, t :Wti! ,' t l1 ,e dcsign in a ..cP t(a}'~"'~Ii!i'ni:uk~i.;pb~e~,by' ! Q o 1 1 t : i : ! 1 lg e ' V lU I ;} the d~~:i!~,~wiI th re~!>itlt-a oo[np(]Q~.Ild t~:I:d l : i l f ' t i lVU11lt !>pkdh1g,. Thedibing .and r l ~ : ; l ! . t i L u g ~{)l l~t i .o l l l j ;were thenpQ!u[~dngllitt :iiltrto~h,e c l e . l k i g : w . wU]~(nj,j;~l1s .i llg a, l'ia~k.

NQ:!iIi l_tif l~rniic objl lt ' i l : .s" ~ U i C ' h ru; t l . l !eli i : l h : : 1 1 . ' I I ' i 1 ' . . . .

~lso he plated, The seCl'~;t i~o '(;O[lt th en]wttho:f.! (. '](jt:itr,k;'I~ly '~':ondw;;tiv(l.lmfnt tn c~dHi' p[:!Itf:l~g' (Ju, l '1 ." t 'n !t . Y·tm, ean ltmke Sl]d~ap,:.you:r,. .elf .by l!ni!riill~ !,:".reu~p.[ree bronZ'C Im''i!wi~h a Iw ile 111~lfli'!!;'(1Pl1l!"'!inr!~I~.

Co :ppe r

!s 'oz. ,co.p,pcr s t ! m f : I! ~ J ( l

4 ,fit ;1Ui,!il'dfmic a.cid(28%lJ:Ilitl l ie~ a.erd)

~ ~51 l\. while 1K iwl'C !S :Y NP'

Iglll.\YQ.:ler

U.... ,lrt ii(lc[l~~~ tc~.np~'r!~)tu~e

Mth t ~mk ~~1TI!(!I.d o f : ] . < 1 ) to

30 <!l~~lP:;pm 5(~nm.N;:[Oot ~t1,-4,voHs. Thluycopper 5u]f.;i'ltel

8 : t !illl'rdm ! ihops,-dn.l,!!:i>h:m,tl i :'

,cl1.emi!tm] hau se s , M9~yg-<lS :

, st at io n s , , r; to t li ;: 2 8~ i'> u ]f r~ r ic:acid.lIU:sc ~·:n,ect.rnppill <!tn-

!l d.e s.F ]n sh s te e[ Q b j i;c l:s il l;)!.: f i icke l ] : m t h l~ do : r e ' o o : : l ? ' P C ' f - '

plating m the nci.d.cO[)!pb'F

,~ol ' l l lHon, < .l Ib ovc. Ag i~a:~~ ,m.tum. '\IIf()i!:].;;

Nicke~32 oz, mO le II ~1M~fnt~6 oz., l ID i m . re : ~ cb~orii!l]e4 ' 1 ) 1 0 1 ; , mr.!c ; ! l ! ! c f f i d1&~],.W,!!t~t'

Use ~d ",rom tt~ml~eT,1~u.r{!

with t'(lilfikC U i n e : u u t o(W to 20amps pc.r :;ijual1e toot: at i ,t .o 2v o l!~ Ji: . YG~I, mn b u yn te h i L s :: I A t s i l i m : t fl . I~Uro f i ~ e l " e la:nodl;l : f~Dn1.~. pl,~~)te11i·stlpp]y

MU$!C ' I ; ] I . ' fWGI! a CCJ\[i!lm.C'r,d;Jl~

plate1. D.w~to~es: sc:][ boricacid. ,vroChshonld.M(hi: : ;~s o lv ed j:o ~ lit~~~ho,t: W .3 J t er

D C c f u o o it's add~ilt-othe :'io.[M,~

Hoo. . A\<oM con.tami:tll!lil:l'lll!.l:mc l: el SO ]u il :[ () !I 1Iwl tl 'l . ;z ln c • .

Z ' i : I i I ' C

3 : 2 : {I~. ~i~iC sw:fa:t~3 , Q~ !!mm(l~i!ilm

e h ' I Im : i: d ~(~Rl amm~:n.r i [ \ I

. l ! . J h i l i! !Z. ,so!t1~iJm. : l'I:Cet8JtC

. J A ! bip. whiile KlIlfQ

~yw;p

m . g."Iru.,wtttel1:'

U;<,i~ ,,~ rGOm tempc[!'~,hm;;

l!1i.riUlmnll; mu:oont { l i f [0 0

30 ram.ps l { ; l ! i 1 \ f sqnOJ;~e[;ol)tatl~o 3 vol t s , ' Y o n t.nl. fuuyzil1JC su]fa :h; sod~mu 3Jce ta t :eand .:;JitlH.flon!lun, d]~orMefmrn . " : I . p ha :l m[ lc is lJ: :. U se zin c

; l l lOd·e ' s~ oldv:dnter's l ime

b loCks < i ! . f i f : ~c[le~Wly z m cAgnate aad tum, wo~k.

S om e :r ne t,~U:S .how ev e r, can"l b e p~;Jl~ed

f~m s~mjp]c ~ c l d J soltttio~~.les ll€Ce!3iSilr'Y~o

use l ' l : I!knHn'e~olu tiJons ~o p rnd s , ¥ i n . b r a s s ,~ r n V ' e f l ' , : ~ l d . o: r rhodium. . A W k a J i f lJ e ~oluHmlSa te l -eq i j !~ red~or phrtfng zinc die c-a~ t imlgs .

S.fu.ll~: jj1]kaline o o r n l i J l U o n s : 'tIblua]lv co'lltHin

p o i O l ! , ~ ~ l l , v m oyanide O f s od :~ lJ lm cyanide, bo!ti l1d.ead~y r :1O]~Cln~" a 1 . h ~ ~ l : ! J : e $ i ( ) h : u H o n J S : must ID e~;:a'M~~o1.1:,dvha~clJl~din[l ' \\~e§~·, , , ,~eriJ. tihlood .1ihop

3J1ea. If -(l cya.nideis: ;aec'id(l!utll lUymhl1edl

,:o,rJ,th ae td , h:}l cb 'o C .yDW C '·ac ic l g a5 ;~ instant.ly

l e t ' h r n J . ~ $ : gemcr ' l ted. .Acid selntions are t ] lef ;ef 'O~'e best far

h .om~s ;h np p~O !Itin g : 1 I J r l l d ~ . \Vm~ '[i:lm~'ild1em Q . s t ofrm :Gnis l l le . s tha~ -'re H.kc~y' ~o \v .ant T l1 £

<1coomp[lfly~[1 Ig ~ tells yQ~] h01;V~{1 m ix

~e tllll'eem~~t c omm !l)m _ _,.,£o r cO'p pe r~ nic ik d ,~

~rid ~~ne.The clle !liJ!1 ]ca ID~listed.a:s,ve[[ asancde me ,t :r uls a nd !. othe, r e 'llU ipmelit, iiI li: :ef I i , v . a i h ' : b l e fl'{iffi p : [a :t i'n .g ~sUl lP ]y ho :I l: se s. (On e

good iiQ u roo is ' Rjjlmyr Mfg. Co ." . 1779 N,Main St." Las Ange]es..)FresJ.ily m[:i(ed selntlons, esp€d;)IJUy fo r

nicbl" ,often ~,v.e ]rregi,d~1fresu]~r; 'iI:v'llefl

f i l f S t t1secl l . .PIa£ing fI, few chunk s o f ~c-rap

mJiet;-;i~i!i.lj)] break lua lllGW b atch. ¥o u e.[lrl

mix . a /n d . s tc ee S io~u t iQn8 : rI gh t~ !!l t he tanks ,llI:u:~l(lil\l:g your l~la,tJi!~g~ad: . This r u s :

awcodbase lfl:rge ! l ; : l1Iough,to take hVQtt~~b~,\!~th.up:rjgl~ts at t[ lC: ends to support

c unc e:l l t~ ca :r .I . l r in~ b ae s are M·"~by-l"'~h{lrdW<l,re .. . sb~[ieal ,ur .ni'nu1l l~nob: :he(l ~n~oth!el;opsof the upr.i,g)h~s.

T]ie~5h tanks used ]lefie ar e the IJf-g;.:l.l-

mOl] r e e t ;m ;g :ub : r typesn'kl .[[11 d il lne s to ee s

£or about S]J30. OHler ~[~es ;),!lcl!type,5 0:

tal.ll!,:s:lU.'e also .avl8iiJ.aMefl'o!ffi Iab-equfp-ment lil!lpply h,o iiJre~. AiCI ju .s t tbe !ength andhe1gU! :u t , o f ~h~ac k b) tab whatevez S]Z

~anl;;:5you b uy . 1'11ea]mmkII!lM~iTIir.!l s i l ]ou ld

ru n m b o ru t 2~ ' V J han, ' l the : l :anks. ,1 ' 1 1 , 1 3 ' p r u : t : l ' l i l '.:l~~p;,~ly..h e ~ h i . c l l . " 1 ' ) c s . s : o : f p l n t e

yOU! gfl , td ep end .s o n th.e aFr.lQllJllt ,o f ; e ~ O O

tric'itythat £lmvs to aaelr pOJint o~~hec at ilQ d e -. A p]~lter ,i]:gll]f.e-s t(!LI~:k:Cli.]f.rel'.lts~1:i!~e:rms o f "C 1(lrt 'cm tt' density," expre~::;ed[;n

a m p s p r e T s q , 1 !l : 1 ]) e Foo t o f ca~hod.e < ! J 1 e r t .

Dou'tl1et thisthro\:v } , o l 1 , " ' i 1 e ' l ! " . l you findoom e p lllHng jobs C . I iLm ~ t . l ! g f01"20 1 ta,30liUiIilPS

per Sl]1il.u-eoot~:~~st of th e d b je t~ ts 'Y ( i1 ilpla te '1 vi'U ]};. ii" ,e ~ s urfaceareu of on ly a .fe\v

s q uH : I 1 e i :n che s .

Alilo'l!'d]n;ltt~· s : [ x : - v \ o l ' i I ; ; ; tu tQ~b3, IUe l, 'y C I 'H l .l "g~ l ·

which ddh'en: about : s i ' l : nmp~. is thus <

slic .k P0'i,V(\Ji S n P l l ] ! l y ~'O!lrhO[lJ'le p]<It]l]g. Thesele11iUlm~redifli@r typ e show n. cost ebout

, $ m 5 . [ l1!!\ph~if , ;h . you could i;l~S.o use ii!i regJ!J

] : 1 l : r cnf battery ond rm:har.gi3.]~ E?~r[odjcaUy

Or y(J~ c~l!ddbuy ~1\lsed lab-type p];l;ttng;recti: lJier. A TV'm:epLl : i rm,an's .DC pO"'i~r sup-

N O W ! Ef.rt. ! i ' Q . p ! a t ! n a : r l i l YQu._r.·'~ $ho,p'[~lmt{fiu6f,l. ~1i!1!I,Sl!i l : . \ 1~J

gOIVeOCl l i ngt~e tank O UD ie~t-a ]~e r h eQ - avetj ' thit'! ~t.ing-irl.an, ac~d I r l cke I so lp ' -S i a . t . vo lbe l i e r " ammeter, swi t ch , fu~ hilld - t~ l)n . A nd b efo re ! ! , O u f ! ! a s h itl;.el\th the s te e lleI', andpo:ma:r ized . p ]mg . A -50~w,att. .25"ohma:nodi .c l ' l i~ ly to make th e [Ii. d k e] a d ll .e r, e.w .iire..w o und . p owe r .~ h.e O;£tatw iJ!~ do niooJ .y Anodi:cetclling :isaooornpHshcd byhang~and co s ts arnuml $5,. T he .m er>e:l 'Ss ' h O i !W l !l ~ a in:g thewo rk from tlleplatmg rack'~ a~lodeo"ro D C v n : r u b t ' ! . e t e i l ' and Q i . . 1 0 D C ~m ete r , bat .~n a tank o f b a t t c e ! I ! Y add. U se s c;'t : : l !P

o o s f u nd e r $ , 2 , eaeh from S ,1 t lPP~Y heuses €Op p e r fu r a cadl,gde) and tu rn fh .e; r l i leos : ta tl 1 k e AW~~ed~Lafayette. aad ROldio S~ack., to increase a:mpcmge until gas bubb~G!i

Wkethe . separ ts as s .how ~ In t~e dill" v i g o r omdy f rom . t~e imme~ed s~e e l . Th.egram. They G t: into a recess in t h e~Bf tFhaRd! bubbling \;V.IT~IO;l;toff dirt anA oride~ and

t . ~ o rmed . by j r u g .5 3 :w i o g C H , il l t D . l ! l t S : in the t h e etched st:edw~[~ take ana . s H v : e ' J : } ' [ !' if l u t

.~ la}'e~ 'S .. The alnmlmnn-her e lee- s~rf~(le . 'This mO),ytak e .~v e O l ! ' te! '! .mI][mf:es .tJ:od!es areeonnected to' the power leads b y 'Tb:enrilillse, the wo r k , t : r .a:m'~6r it to thetw ' l ) b rass ..· r 'Q d t e ; r m i n '1 1 " ~h;!1!~s e e n d f l:w_rougffi l ni()kelba~b" ~nd , f I ; W ' i ! h . .pk~te it f o r ~woQ tholes n o M the,~op' o f the~eft"haind. 1 t l P ~ thJee _m inu tes at~o :\V c~rren~ densfty. Afi:<l;rr ight intD the <:\on ~m~.compl('i~rl1: 'r ientfe(.ess ,. this OaS'J: i ing. t'11€ stGe~ is switched , t o O ,the

Copperpltdingmo~bMe~.etnls i nvo IDve s add cop 'p e r bath and pl3!~edw~th ;l~ he<1v- .-y

c leanim J ~he \'i'Q ·rk tu be p l< l,te d Jo n:r@ fuU y a oo p p er d ep o.s , it a il i de~ : l J )ed .and 8IJ1 spend : in ;g i t f l l 3 1 , £opper solution 0 1 1 NiCkel plate is Ornrl'lIl!ri1y depo.5 i , ted G c v o e r

Yolife hu ng from the , p]3 ! t rung f ' , li( lik '~ cathoi le 3i . t :hick e e p p e r 1 ] j 1 , 1 , a G r p l a t e , . This lmde : rp la l le

b . .r; S h e e t ( l o ppe r w ~ n 1 j e r v e a s a n ll!nod~. s h o u l d b e polished : m : ! o Q t h with w e t - < ) J ; - G i I i YC~emdng Is th.(¥; ,cruc:i:alstepl, {urimy paper and pumice. .

gumse, oxide, or seale on the work may If fha carrent In thenrcke] t ank istoop!!ievent d~e depo s i t ; fram adhe' ,f~l1lg. O]iJe s i;]o ng . :g~s b 1l 'lb ble~ Irom the carhcd e andeasy to C m e i 1 : n ;]:1} Qhliec-t f'Of p~atin.g is t~e : depooitnums dun. g r :. a . y • . ][f the ( l~~IiI~nt

tQPO i~ w.Hh very fi!:lJegrit a:bmslvl, ll is ~oo we;ak,~he d e ! p O ! l i t 'iii:ViU fI.a~e 01 ..C~Q~ ot.! a lexibl@ d~sk sandie.r. Then SQru ib While l!icke~ adheres well ~o coppe'r, itit tha r01 t lg~~Y ' \iV~thgr.it"1s()ap jj~d8 < Lav ' l does.n't adhe-re well to nic kel 'fhe< re fo lte ,

s o a p ) : i11]d hou ~iho 1d - d e t.e rg ~T !t. W h en ~he b e , ca reflLlilnot to ~nt:e :rn_ l!p the :flo w o f eur-meta~is sputless. drvit w~th a so f t c : ] o t f f i l . . !fenl!. Don't remove the wo. rk for e x : r . r t 1 I : I ' H l "

Avo.id. touching tffi~esurf:(l!(_'e-eV'etla greas,y tion a l I D d . when ~tlmiml~it, :l!'Ioid 'breaJdl'lS

fmgerpr i! l i l t ,(eM c[~~!SetirOub~e.oon!tact with th€ca I , thude b.tr. .F ' o r~op ' p ro -,Afterprovidinga\vire hanger. dip the ~oc1ioJJ ag<Li~$tenrroslen, buj]dup' a (lorn,"

objec tmomernta r i1y ]1] d l ln te , su l£ tHi :e -aci:d:pos[~e plat,s with a~t~([nat:eLr..¥~n , o t c o p p e r-:28-pereemf-streng!ili, dry-charge Da t t e ry and n idke ] . J W I ' iI iiShLngWI th nickel.acid. 'Then tum on the p],~toerand . lower ~e .Z i too p. la t iR,g baths ar,ei lTh;rndledmnch, lik.ew o rk .il. lto title cop]?£i r hath. 'There '~ DO 8icM! coppe r b at ~;~ ", A r o a c.J :d 1!l:incbath, how-mookh3:1; ; ) l rd 0 3 ! t fh e '~O\~ vQJrn@~suro;J . . eve . r , is l e s s able ~l) p~ate into reees ss s ,A phlk is ll co p p e r depos~t ~formsimmcdi~ TlJ! lm. lng : the wo r k fr~~ep.tly helps.

ab~ ly . . Should! it tum, mottled bro,wn.to() .Nea~l:y any :no(!lI!letal1ie obj~t 0"~ be ,~ tJ:ehcU:l 'l@ nt is £io w ]ng~:lid ju st the rhe os !t;:!!~ pla~ed S 'I1CO€SsfuHyif firs t b ~s h.ed . \vith all£01 ' lowe"]" :.mrpetflg~ •. Vo~tage , Im .'~ criticat , e l ! e r n l C 3 ! l 1 y condU;6l;] '! . 'E ,paint, asshcn:vn InA mmlee :qJe r im;eu ta t ion w~n dB t~n r r i ne the ~.p ho to , 'T he pOI:p'l lhu t r jck ,o f plating babyb e s t rh,e1'),Stat s eUiug fow fast, . 8m.CIotnsn.o@'s . pill!€; e en es , ~m .d (l th e: rM f !:m £ it ~H (1P~i lt fug , . . n w . [ r n l ta.ke pe. ; r~lI:p . s :a.ba]~:~hour o hjects , can :b e dG,net~fs ".vay. Use this s ame

to plate an a heav y Jayoc afo o p p e r . . techniq u e to ' e~ : e c t r o f .m11 f llntTI(. 'a teparlts"·Wh e :n .p 1 3 i,t lil '!l !g a t ~ic k '(;': (Ip p ew d .£"p o:!JH~I]ft M ak e a pb s t e rneg{ l :M·vemo]d . g~ve i~;aeethe work f e om ~ n e : . bath eeeasienally und a Q O ! n i c l ! ~ ( : 1 t i : v e ooO) : l t ing , then build u p a m 1 lsUloo tlh o JI .(lnY ro~~gh!1ess w.Uhvery £ h ! ! e , ( ' ;Qppe r depos i l t ,w·et~~or"dry paper, 'T.hen.repla.(le it!~~~e Ci]rome, pJ,~l.ting reCJ!uire~ :llp~c~a~equip-

tank , AgUate ~md~~m it J;~DW a1TIl,dt~e.n. ment, Y.o , u ean ph~ ,~eptec~oJ1i1sm~tai ;wi t~Plating itltm, ,!,)J'lteeJ .in macidOOPPfn'"yotr r ' r nc ik . h ow ev e r, using PYf€X coleepotba th requires special pro~crre.,. If f~}us bodies for tanksa:lld solution. oonOOll t r a fm

A WOOD box liri:ed., . with . "",ax', hviJ or

th rile cellS ]1'011:11 1 iL \ : 1 ,' ~ t

lbi~itte:l"Y.same metal anda f ~\.. d l >e :1 l l i C < lh ;, an d youare equlppedtu turn ml~c

bcauti:fu] piec'es ofmetal-p~ated work er pemlf~-

:nen!:ly pl"ote(';~ your pet

tnels <!.ga~nsthcl"<!\'3.gC::i

oirus!: and . corrosion.You can 1~1!,N~n. h<'l;~'e'tlhe:

d i~li]1 ct :uOTJJ o f ow :ning ag\(l:~(lpl.fit,~ds tee l ru le , lnltrtlmeler, caHp'!2 ' ts ,

divdders and ot.her w'QtbhQP neeessities,AIUI;J . o1J : lghgo~d is ju s r iyeons id ered a rare

and expensive til1ct:Jii, the 'lhinifi:e5a of the.Il l<l:te relqui,'~d reduces the ees t to a :lc\,v

cents FCIl :each ;u"t:id,ep[ated" Amd I:b~n"for .1e~spretenliou S Wo r'k " th,e re is :s~lver,

nick e.1 and copper. .A U o f them C:'U'J. baphued by ~ ~]mp]e de:lI;tI'kpr:oces's orchemicallywith ;1 , c~Flld's-h<!'il:brush.

For I:hc ,~]leet:rQpJ,ating p"ocess, make a

w ith go o d q tim Jity m l, .l ,fil~nand , then co v e r

i"lte (ln6rein~id¢with it thick eear (ji~

ho t :pa,'r :iid'fil1l wax. t(I make it~":lhj' [lrnd

,acid-p.ooL La,y two COpper roc ls i l i

: !' !« ) t: c be s a c r o s s t h,c to p to r ; , O ' F ' ! I I ' C as e:1ec-

trical connectors amd SL!PIHHttsbo l .nwhid~ the 1 '1 I l~Hu~. and objects to he platedare Sel l spen ded,'Vi le t- t ,~n batteries areused, (tnn ~s the

eonstruceleu js so wen known, i , tl:i l.eed

not be repeated I:mre. cells frOI~1 Q1d Ao r :MltoirIH}blh~ b.hU:eries C~lI ' ibe usedi f '[h~yg iv ( ;! t he ])1·U'(Hl]" 'Voi.hlge" whi,ch i

ab01!n3 vnltsnnd 4 or .5 amp'. A radiodt , ! !oS tllt m ak es an e,xc ,eu,ent ennen:t

control or regulator, Sotder th~W]:r!li

co '~:n: ,ectiof i : : ; lbcol\\l ,een ba t te ry and the

tWO 'coppcr rods, .nOIJ' the pli'l!thlg~}OX.

For very small ]9hc'l, dl'Y c~lls.m<l,.y he used,'but they are not !fee,o'mmel1,{!ed.

An ~~1poj't<lnt thi.lilg~O t'I?;I!iiH!mhe'~i.s

durt ilL nyt hing to, be platedm 1 1 1 S t be cham-

ic:<i.,lIy d , ean . And : [l It er d eO l.n ~n g, it ]! '>important that 11(0 fi.ngerrnarksare nl'lL(~e on

the \\"!l)!·k as th~yinv 'u -ia.b ly :;;1 I1 0\1 j'as a

fa l l lh iII thep1.Ott ing ,whic h woul d h«lYeto

be don e 0 ' 1 ] 1 Qver ag;;in. Wi["st :j;'ei(\ t]];t t the,Ol:rbcle:i~ ]letfe,e:t ' iy srn.ooth p il:tati benaade

and 'l"LflSe i .1ILpuveV!qJ!i:ter". Steel or iron

a:1t>u r leQ\4i1 '~s . a thiu plating o f eepper be-

£or~ it {s plated with g'old, 5 i Jv e f ~r niekel,to make - th ehn t,elfndhcn! tena!: : io,u5.1y .a

Finally dip the artielein . < J ! nitrate-of-mer-

cur)' solutIon, ~ndit may be plaeedinaue

{If the bilhn:ving plat tung baths : Gold selu-tion; dissolve y . l : oz. gold. chlorlde !» 2:qt. distilled warer and <l;dd l y , ; Oz. pcras-~;h.l lm cyanid e . S Hv e 'r :soh:ni.on;: In .2 qt.

cl:~$tnled.wate:r d~$sQlve 4, 02::, potassiumc'i'Olniclie and 3 : 00:2 : . sHvct 'C:V<i;i : i ide'" Nkk,e]

~ ~ I ! . I t l Q t ! i . ; tij ](~)pa rts d i s .t;1 1 ed ·w at i1 !,r a u: k]

6 p'l: lf'ts nick el sulphate .<lind :> :p at 'ts aE tl-

~lOJ1i.1l! water; when th ls is d i~ :5 0]'I,!'ed ;.add20 rI],oreparts at1~i:n.o:nla.The bath is to be!kept ,dhliue. Copper SOlUtiOIl; to each

( jJ 'U, j3 ! f t oj saturated :s.oh:.ttkmof eopper 5u1 -p"h. lJ ite ,add } 4 . "z,. :sulplm.rk acid.E :nQ ,~gh . (If fhe s o iu tio n is p o u t 'C >(].

into the [)1;:lli:n.g to.N~O cove. the

ard d es to h~p h'L 't ed , S tJ :$p em l t :h i1 lI 'l 'il

01~ tb~h<ll~.-e-·cQPprwjre '(:Ol'llliiBcted

to d~e .m.egati. ' l "~ pole of~he batte'itY"The pl,1it~]1gl]1diiL] (anode) is ~US~

pe 'I 1 i,~ :J !. edrom . th . eo t he r

: r od by FJ:l.elliH or n no th e r£;:O[ . lp ,eE " , ·i r e ·, ·wh. ;ch in d d s .

'Case n:tIU8.[ not touch the so[nt!o!.l,ol' elseas :5hOWI:I in Fi.g'. 2. In cG'[lpe'rplat~tlg, a

sheet of ciopp(:'r i!s used; , , ' V 1 i t i l exp'i:t~shl'e

lll!da!s, s u ch as goM ~Itd ¥ ;, ll 'i. "e r. a sm a ,]]

copper, bu t as til e :p 1 i.1 !r ~

metal is semethaesdi f:l!1cl1lt to securei, a

w l < l , ! l 1 P!'i:!CC of pl<llthll1in~wi!;e :u u<lyib,e used as [ 1 1 1

aL 1 0d e . As u () :filjcke~""HI be passesl liMO selution to 'takethe. Fl·~aceof that used in Il]Ui.ng,

mo re u ickel ~ U ! J ' : p l l 1 < t ~ ~ must be a dded. ~ 5 req tljred. .Th i~ ,oil'!.!O l : t e : s the

necessHy of Imf~$ting in ." large. ,]m o d e Q : f~ hc: me: t . ' l l ,which is mal1ly~i~le6

more than re(]u~red for O C ! i C < L S i o i l . a l w o r k .

The tim e req 1 !r i[1 ~d . fo r pl.ating i~ de c .

termincd by the strl1'Iii.gtl1.o£~hc:lhauery.spaee between the electrodesand tG:iUlper-

attire" o f the 80~1.:ltion. If thep J:il~ itl ,g ap -pears .gt:an~.l~",U',more C!llrrent must ]M~:

'~sed: a ~.1gilet amr,er~g~ t'athcr~ h<lll

POPULAR MECHANICS

qJuir'ed. ]t is ebvicus, however, that the:

artides nearest the p]a:ting lllctat 'win reo

ee ive the hea viest deposit:, 50 they flTI¥St

:f[lflq,tl..en~'!:yb emoved

~lhcu t, The COI1-

fiect:]ng wire mus~

nlso be moved ee-

easionally t(llavoid

1I l1a rk ings . . \"1h en to

'!"emov,ethe articlesfm'liu the 50~ut]mt

~sdeterm ined by~n.-s.p e C UQ n, They~dHJul d 'be riu sedand dried arid then

f,lo]ish€d. Gold andsi]ver';lPl fht:ing can

b~ easU)' g iv en ahig 'hp®1 i· 1 1 . wit It a50ft Ch~Li.t1i01Sfree o:~gtit. A i:Il1ffi,ng'

'llpplied t Q 11ihl

wHl b]"ing o 'u t lit'sfmU br ir lUane; 'e .

In ha rH~mng andJ 'I 'lakil1 .g 5 .o 1u l:;to ns

'CEl I ' J : ta i l l ing ' 'the cya-

u~des the ~ltmC l o s t

care 1nI.Hi't b e vused

as they ;8;il:'edeadly

IJoii8on:s.. ]..lark theeyanlde botfkspl!l,in~r

and k leep in. <B. .~ecuw p l a c : e : "

Thrnugh C,oDsU'1nt u sage silv erw are (:0111-

:nl~.O[i~y we.ar~, at a particular :pla,ce, ex-posinK thebase metal 1IlHdet'neath, Tbespots can be eOl,S!~.y and che a ply touched

~l:P'in H1efil)nO"~f.ing ]i]:i;t1'lne:n': 1Itake a

sarurated sQ~u'tion ,of: sih1'(~tnltr:iL~~ : 1 1 1

d[s~med w.Hef. then add to this, one d.ro,p< l i t a:tilnc', SO''l~lC OlI1Ull0 11a Viiater, Tl1 e :

sol nt.!au iSli'eady fOo]" u s,ewh en thabro wn

colnr just disappears, App' lyr this solu-Hon w the '1'1'0.]1 spot: with. a.cnrnAd's-h< li'" h:r1; l sh, as l in F i:g. 3 , at lhe sarne tim e

lom.::hiil'iil{ 1th.e sfJO'tt ,,;,'itn < i I . SCi:'OiP o' f bdg 'h taiue, This sbonl!d be repeatedfive Of sixtimes,.\\l'hen the Sfl'f.ll wil l 100k d nr le ;i! ,u dtaruished. [t~s nnw dr:ued i O i J . t i H : l gO]1~ O'l"!1:L"

with < L. soft doth" the'1l11)loU~IHMl with 1 1

doth and whiting; when the new silverwin he f\~vellJed ina beautiful s ,ntjnl lmis 'h.Tool:;; with Ha~ surfaces cart be coated

W h :E l a smooth surjace, sueh asgb!lss. or

ap o]J i:s 'I: iJ .ed s to ne , as In .fig .• 4. The p la t-

: l i n g , ]$ ~ - x l [ ' 1 e : l 1 ( l e ~ . y ~h;.l l" 'b u .t i.l 1 o r d . i i J i a r y

u s e win h.:3t~or

years .. H is not,oicCiurse, S1IlI!;!l,il],C

:for' spee i:nHyt,e]IJ1-

pered .aii'tjd (::5."

A simple (tli ( I 1 1 l gso Iution c a,u be

m adie with go,] (

,~h'lr . idc , . di5fi .Qh,Ct l

in a~I iI:t]~ ~is'i: illed~\t...ter as pO'!i sihleanf]O\dded '1 :0 :1 .1

equal q Ill .all ti t J ! ofe th e F . POi!~nte;d o nch e m.i al.lyd,eatlLsteel or iron, it de-.I l I)Sit5 < l f i l m o

gold"and seve : rO t

treatments wal giv~

a w eaeabl e phl,dogthatl~' US ,eh~1 EoI'!MateJ1.CaSe~5.,:ri ngs

and 'other jewelry,

Oitenit is de-

!>il"ed to giMplOiLsti,e

'c:a",ts, roJish~(j], 'wood,

(:10 th 0 r[J!a.p 'er

\Vith !t:h,e folto'!N'ing l;o]utions 'either gold

,01' silver can be used, M<I,ke ~IP' fhe 5101u~

tknnswith gol[l c:h~()l"id~ (w silver nunateindistiUe:d wateraad p.ai.l'lt the objects to be

gHded e l·sUver'en. T hi:in p ~ace them inside

;t11t!ph:P'11.ei! gl~ss jar- (Fig..5) ~nto Wllkhhydtog,e11J. g~,;i I.S ifiject:~clL Thellydroge'rl

will throw the .SHViI':i or ~M Otu: 0:1: solu-

tion :ind depo~]t il: an the Q;bjec~:5.,Hydro-gen gas 1S HUI.d.~ 'W] th a weak slJ.1ilp.hllrk

ad.d solutien En which has been placedfilings ( J o t . clippings of slue, The gas ig~h'~n off In slna,]'! buhblea and ql:!!';!dy

ri5(;:61 (I the W:r of thecJontai mer. Ishould be Hladea,.\!,ay :IFom ope l1±1. ,U1i1e '5

Til F~g . .5 the gas: pa:sse~ from tne]owcr

glass inlo ~l:Ie tlpp(;r~Jlfl()ugh :~,o l' es ; 1J :J :the

'L~Lrdlb,oElrd.

One of thehancnesiI: uses to which elcc-tl"opla:ting can be Jil~tIH tbe home w'o!'k-shop is h] file making ofunusual ~nf'MI

n,tme~1<ite5~as in Fig. ,6. Tl~e,. can be

POPULAR MtCHANICS 51'9

varnlsh, Pb.e~ it 1[1 : I . . s . u l -

;r en 'p T :r ting s o lu tio n untilHJe lettering is coated with

silver. Remove the varnishas before, a.mI you have ab uutiful nameplate let-tcred in I rllllant ~ihre l" 011 agold ground, It miL}' bedip'p ed i i i : ! th.in lacqu er , <I a. p1!"oteni~Jla , . g . 1 l ! i l 1 s t scratches.Copper ],tl1tds:iitseHvery well to chem-

j, ea ! c o i: nr t n : : : . a h 1 1 o e n ' t , and lvith th,e fonow~·:iulsill1ple process, up toa dozen diff.e:rentcolorsa:nd shades can btl s e cu red . MO lk eup , the follo\\I'"in.g so lu tion : Ile ,ad acetate,, 300 gr.; s o d i um itYPosl:I[phh,e 'hyp o 600gl".; Wtlter, 1 Qt. Hea:t Ute solutioi'll andim merse the object to be' colored, \V.atch

the latter closely; as the, elution beeomeshotter. it wlll pass through a number ofcolors and shades, one ::dter the: other,' V ' IT l luei .1the copper is of the eoler i ' lc5i:red,

remove ~tat o nce 'from the , !!i ,o luth:~n, rinseand rl:ry car~fi lU,y. The .chi:it i·i, taJ color

, f o rms O il t n ugh CQlaton the surfaee Ci , I themetnl,

With silver eleetroplating you can have

with the lettering, Therefore, as an ex-am p le " p aint in the lettering w ith eo p a l"a rn L h and, wi til l h e elect ric ,0r chcm ical-p~a1.ing method, CO'l,'C'i the plate with a

fdm of gold. Remove the varnishW~lh

. : ;~ko 'h(J l i tlry wli:h a snlt charn.ois an d paint

Ille g-round ('Keep,ling Lhe l('tI.~I'illg) ,'dth'

ha vc fmi: ;h~·d" it hf~5 a thick

eutcr phl,'li.ug or shel] ofpure silver with • plaill

~Ja~s iU lerio f ' <D rgold-linediuterlar as you \'vLh. Thecost is 110 t prot! ibltive.The ghl.s:' III ll_ t t first be

" ~ i J vered' or "gilded,' ac-

cording to whether yo u desire . < ! l g o l d . Ol"

a silver c[nrering-,. A~ the two proeesees

.U(! l1 Lciik ,e t Ju ~ s i]v e rin,gw iU he d!esc.i~led.

Fo r gold, g o ] l d ,cMor:~de : U 1 O ! .mbs1! : i t u t ed .

for silver nitrate, First wash the ,glass,

W i t !1 dilut(i nitric add and rinse with

,£1 1.U1 d waeer, Aft,~r this the glass muslbe handled, with care, with tl~~ '~ng1J:rs:in-s ide , t oO pr,eve11lt 1r.i1.g!!'~·'t:i,i~:rk:; 'QfI 'the stlr~

face, Make a saturated ! lo lu t iOl ' l of silvetnitrare and ndd, :l. drop at a, time, someliqtrid atamonia. Stop, when the I I N : e , -

cipitate at first fo.med ]s dissolved again"Tu rn thegIO ll,s ,s , upside d own" Fig;, '1 ,

OlIIi'c] ,ccnl" 'e '[ the ~)ouom wulh the ~1 I ..er

.so!~ltiQIl, A d d ene drop , o f fo rm,a ld , e i1yd .e .

'~Ild 561' " " , i t ' h a. ' t oo t l lp · j , ek . TF~e s o l u t i o ': m i'wi]] become dark, and a Ilhn oE sllver 'wiU

be: deposited 011 the glass. 0.1) not touch

T o ,s ilv er the s i de sthe same m eth~C ] ]~ r : I i l l < S ' post auda b r a s sn se d < I ; : xc ep t th... con eaet on the . fm:~nnly a sma]]port1on • micacap of the tube.

is silvered ata tirol~., ~1~W eigohin g o 0011.)' 7T (1. do thi S ' . , a vuh- U)., it : h e : rot i. ek ]s,

ber w a\U mil S TIb (l 1 easlily carriesl ,aboutfon!rilod :a t 1lI !<ouI: TIh~ wne,re nee ded ,

~1·p~ee~n!c] :s H ]~ 'le F .~ 0l:" ~ . " "" v V ' hte ~ 1 t 1 : < h e ~TI e tt~1.'U'I~l(J,n[)l ouren U'UI.O< , eon . ac ~I. 01!lt:lles . iU'C

It. .5n1a l1 tu , :mh le r s c{lnduc,~ol" c,~nying

(:~tlJ b ~ e ' l 1 d 1 F e l y sil- ] 3 , 2 0 C l 'i'o]ts~ : l , r i J ( : l isvered :1'11ue ope'fa- .~. then cl:r<lw']!l ,uvay,

don, as shown in " dlelfe wUl be O J) spark

Fig. S, A waxed- ~iI< !:. ~ apprm;::lulat.e,ly 1 4 in,

. ' ~ < I ; p < e r tubeis placed in h n g t h ..T : t i l . e<lbout. th~ upturned noise of the sP<aV·'

glITIss,a 11ds ,~ \ ' e : ra ] is e xc e p t i0 na 1 1yspu'o;nh]h 01'the so- clear und serves ~, S

~it~t~Qnw]1l eover l i t . . ~g,"y I anindleaelon o~ tl1.e

Wh~'n t'he outsjde presence of current~s < e n t i r e l y silvered, < Cv e u t 1 , on gh thew i ,t ]] 01 ! d s ,~ ;: at chm ; o r spark may no t be

p inho le s , ]t 15iillady s e en . his ' C l a imedto 'be electroplated. ' r1 : t ia I noLiG l 8! to r S , l :i d : ·!I1"O'~fl1!t&nGml!l'l. Jm m Il:B ~~~ . Um,ata rena,bleindi~F,<l:s teu ad'h e s i e11fl.'H.lvett ~~.Working I;I~ Higi l ,T"e!!a1Qt1 Li!t~ eat len is given o n a

far,N~to the iuside, Fig', 9, so fh<l,t:thetam» three-phese d,·ICll.dtw ,r th .. . potentia~,as low

bler C:<l \Hbe suapended frern the copper l"odas 4,000 vo]ts, even when t h < e :firiequeru::yisin the 80]Ut iou. The connecting wire as low as .25 ,eye.les ,tt1:aJkesc:onta(:t\,,'itJ~ the sih"e:l"ed SlU"b.ce

aJ t therno'ttth of the tmmbler by means oE

at :p ]ec .e ,o f t infoil cbmped o v e r the edlge.

hi ,0 1 :short tisne .•move. the tUrul , lMcr abontso that aU sides w in he pla.ted evenly, and ,f:re~uent~ymo'\l'l!l theconuecdugwi,'e and.th:rf:oll toa diiI 'ererM place o n t:be.im sothat there w m be no n l " 1 '1 < ings. When theg]ai;;~ ]8 heavily silverplated=-at least the

thlekness of several sheets of p a f ! < e ' t - d r yand p o l'h ll 'l . it '1, , ' it :h so f~; ehemois s k im .

D~v:k<!!£·01 ' !ndic:ating Live Power Lines

. A n in t(lr e£ ti[ilg ~i'i.'e "'i. vi'r e i'n dic ,r uW I ~ ·s ti.c k ,.

whiic:h is, shown in the' drawung and photo"

has been put in . use by an eastern electric

Ugh'ta:l1d power plant. When work~ngoneables i~ l 'la:l been th e practiee of thi~otg.ati.iz.adon to place grounds on a.il threeeonductors at both ends of 13 , 200"vo l t

lines , B 1!j;~]i the"t'o d {nH~n are not s 'U;1!r:e

th<l.t the cab~.esare dead,. theve~s consid-

Imp f 1 o iV~ s t d . P~p~:Vis l l '! : Ma i l eil'mm C a b l o e C l am lp

Fo rp :u p e o f s~a]] d ~am ete r , : f I ;n . imj)l : iO~

vised Y!$C c:,an he made from a cable damp~5 show n in theiUllstrat~on. A. nnmhe ' r '

·of fih;l'Of hach"w cuts aremade on the

inside oll 'lhe clamp togive it the reqururc!d

grlPwhlg edge, .a n d t h e t b ! < E ; : . a .d I ~

ed e n ds arethen pushed~hro1!l!gh hoi e s

d !~I ~e d . in thebench tap, <I, l te r

lWlddl.mu:san~

r un fln. < 0 f< C < 0 u r ee , i t i 5]:I.~ ,C e s s.~:r-y top:ro;vude a : : ; ,i m i ~

]~'lr]lydriUed n£,e taJ plate to bce the,bencl\ttop drilled to cnrrespond wit b those in

M~~[!!~, ,~'~~';:~i;:Ii,L,!!i~~~i'j~ ~i3 Ii ~!f!~ ~~~~,D ~ n~"." too :imtr..'~~i.I ,.. .:Il'u,i~~:i<1c~-~lJ]t i lJn~ !:iJll, ~ c : p l. ai L !: :i :I l 'W'jt'hlJillil , r : ! , ~!iI!tI{!:,~

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'~~IJn,g; _ , u ! b j ! l ! . . ts..

Oil! !' e .xp( lr I~ncj)t~ W L L D I t I l ~ H II uee ; ! I n a~inlpl~ , ~ l ! ' a d f ! O O 1 s;t~:riige. h~U~FY C P . S . U .:Ui1'~, '32'. j!i, 58) huve :;.h~ usthe du~~Tta~Uo~ . ih il " l be t \ ' i1l(:IQ d!1Clri l;i~. '!-·and dl!~·ist[j1_ Xow, widt tho:! ~id ~ o il fei'" fei!'L !!ifIron "",ile _[ tnd .1 carben ~.\l!~ ~11I c.I~h:eill~Q' t~n(! ~ubD~~Jt~tU;lh1[1J:ItLT",\",~ m il u se

i!lectrii!:it;..' t(l m ;l ~u .r ~e~u re ~ q (! l. ll ~r ~1 1 e1 .1 1blil~wn ~:5 HthLum.

Unmre m() s~me t . .l i l;, l l~hi~m is e~t~lI1i1"Iy mct:ii~'e [ 100 t lo : lI t s , 1 : 1 0 . wuter, SLi.i llli"d~iiie~OS8 Jts ~urfaf~l.ik~' ~ spin!l1ii!ll~ ~~l. ,it

~t 'wmj)Qse .~~~il:liql; lj\U~~l~h' 11~S~~!I:r : l1o . i~t :"

E ..;~p m.. !l!lromit~- ~n. !.l UI:lllItr,IiIlL·S I"C!mmywu t l l " ! t . t 1 e ! 1 i t r o g > c ll J . . I n f :: ! c :t . , ~'O 51.0[", th~

l 'f 1 o : l. .i l $ ! i J d y jt m'l1:~l .~. l ; : t l ~ o l : e . d i r i , 0 : 1 . tiNltll'of kerosene,

]1 1 ~h(':! lome h1b(l'~~l(l!:y.Uti~ .s~I,v(lrys l ib~l l lonct : en n b e i"o rn:m d b~,p "ss5~~ .m~irl;:~trk~!~.r>!!llitol' almut six \'oJit5 tlmmghIt'io[)~tfnliHiilUrI\ dl~()rid!:" n'll e~c,"~~~ dr.,cl!!.i~.ODmsj,;.t~~mrpl~, or , 'I, udmm l N M l ~n;iIiii ~li~rL~leoi l :~111if i f 1 : l 1 1 wlrc comifl~ted t~tillJ' 1,8r[J"lin:ll:!iIlf a~u:<-~'Dl t~tor~ b.l ! :wwr~'~l'!l i~ o o go o d t It }' t~~I:51 t1 )~f1eN~d ii i ~oc j e s ,I"~ jill "i~1 ~W!J .I 'C i t1 !m l :~ -; lI ~. r~ t! cm~ , d l ii ~C ~

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fli llJ ' fl"lt ' I(j1,. '~ th e wir e f.rnt' l l. I .h~ cn ld b l oC ' ,~mmE'fS~ i~ IilJld('[ ko:!:nL~n~ ill ;]; dish Of

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iljillL't! '·~lDL}."

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'~liLt, }'ffil 'C~II~~",,~i~~'!In' Sll,lil!l q~~i;.:~lf\lihti.t~ . li~~U, ]I~ Iis ease, h~\\\tllL;l~~ll:c.tnld~s. CDIl~h~l i ! l1 . ' : ( l i t ~1:I1:). t~ .J~t~nl!' I:OOliil4'tt~J la' t " ~ t-I!'l1Ill~riIt i l e l l [ l [ I~l~' m : r nm l 1 i i l ~ d 8 0 u b i l l ! - l P l l k . douHi.1:UW~~'·~I.~b o w ir~ f~:Jil Ihro\\'i!~~s .w it(.h m rm r~Oil . l . '~m~ ~icli~ L~ fm ~re\~r~~s UW 'C 'UWl ' I . ! t . 1"1~~ twe l4l.1(J]I rmd~!> c."m li e i l1l!il!i .J lbOO o n :i I. ~~t@ ~Itor Mf:l"c~i~~~. Htlije ~!Qm(i ~~p51I :D\"1I :is ~d, IJilo:m (I!i :m:mt (".1.0 be tHi 11i1 .~5 through th e s~~udon m"!l'o\~h~ eb~~rD(h~~dqsc r~Qg~ . IK£_ In't:hi5Ut~ .Iil .O ' ln~"mtlf t r l :! . t m il make up fo r~k-rjde'md'il~i q t!"iii,l C'Lln~'llt S.OUI " "OO d~iiI\cil~ I:!~!.lcrles"

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S~~l!!.l~Q-T!. A~ t!hi~ p o J - l ! I J l . , , . r u o o m : tln~ S I " i t c : ! i Jto re VI l': rn i: !t~ le ~a:L~nt ;'L!ld c:a1.lse t ~ t e p ! ' t : .d J li ta t, :e 'I ii ) l 'I < '! r o rJ il lL ! 'd ilim~nd t h l ! Il(h~~

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Tli i l : :'l{rlJfI'IJ11j~li!J1i om. tlrtc:o oltm u o if tm eb ~ k ~ f w i l D b e whiLe l e ; L c L ' 1 ' ( 1 (I.~lt:. '1i i l l It,i il b (' l' t :b~ ~ iq t Ji iJ . ' ~' ,i ~s hLit wH)! w .nt e r w~n~it is 1[I~1 ~ 1 : \ ; e l i t t ! ! ~ I 'ap@r. ~lIid Ul~!1 < i l l ' } ' .i~• i l ! l :J. ~nLre m ~ . t t . - -!Elle~rop~~~in!!:is om~Q f tile :h!!l~rt;;lnt

U5~.!l of c.lochudll:mili~I)', Grn!! ' r ;3 ] ly . tbele.rol i m p l i e s . t h . . e lJ~1!! ~ s .ome ! I J ~ t s i d e ~UT:·

! l 7 l : : l l , t 5~tO~ 1 0 d e ; p i l l S j t a , (['Lil'll C i~al i: rl g o r1 1 1 ! l l t ~1 ,gn ~ome IIt l l l!:f mdnil. 'I1t~ h o : o : ! ~

; ; ; h < : m i l ! . t wm fililtl it e;}~y to ~i:Ij}l~h'i,t~: o 1 m L l l e . m ~ t a ~ U A ; ~!1,;el~5,met~ly b}"liJ!!i l i l l~

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ee lhepo~it~~e~!rmio; '! i l of ~he ~~le~y),i!liIli~he irrLidll' to O 00 plH!!:lIlls HI~ r o t 1 I o d ! ( \ ,

Thl ) 'wis ~nodl!i):r .~lIIij ~lmp:l l ! )r Il!~ti ll l .gIl[tI~,hlJ\l;~\«:t, in . \",ruldln:~ ~m!i1d~ cur-

:rent SQ'Ufl)~ 19 U9ed. ' I lhe ~~m1l>1 l t~ ( lU iMi~~M;nU~ by the (1l1l[]jtioo5 mld~t \'!'Mtli

~ : L l ~ ~~[I;tinl;l. :[~ ~oOO!n~lislleti .h o o F o i s i i s l s~liI1pl,y of ~l~cl l1g nil:! tlrtid!! .~ b~p.btooin C (lJ 1~ wc ,t witJl a £ tll lle t. ( 1 0 1 ~~mc ~ l t d . 1 m .m~s l ;r> -z t !r om~ml~<t ;i. $'~i!.;I1,~~(~~lIQ6 !.!ii'

l u t ~ O T I I or ' l ! ' l c € t r o ~ ) : ! t B ,

The d lis;;L1 Tf!i!arH:y 'D f ~I:lg two .met~hiC ll US~~ tt eL ic ctr .iA :: , cu rre nl tu 1m fo :m te O:.Itj!1;£: tClll : i J : I o r o doc(ropmsit:L"";; ' iml!-bl. fill!

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11. ".~I'',.1 of I'I~U..g",l th o "n .d .m .1 ~ .'" l '!i I:Il,,~.t",,~o~ Ii~,j~ht" C"PfJ':i' or' In ! !! !! !! !i ~ ~ ' lt 1 ;i b~ 1 J! WG~Q ,0 .

fJotIiJ t~ilt li".IOMn. iiKi;.~,i!!iiU!;tl ~.Lth .f i t 3 i h ' r L l ! . i 1 r t 1 .

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ELECTROPLATING IN YOUR. 'OWN

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REASSE:M]n~E t~ .~I~~r~~C)'r .~!td eon-

. . nect 11!5~~(!W!l m f1 @ ". ~. O [T I~ I1 'n d o r(he J'u~M 'C )iJJm~ds to a Ilni! \ ~ · . i : r : t ! ' .l!l~ (JoLliL"l'

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"'' '!lil~bl~. B. :snmp!!:: !l;1L~c;truplil,t:in~ J;ru:ml:rnay 00 , o~Lajned by u si~ 1 I1 oo .If]~f ~ <lm~ ! 1 . d J :rr!~ ( !~ e (; :t~ o ly t i; ; ' ~I}C~ ! li er , ~~ )5M '> 'J !l m

f'i(!l. J. ~rmuo c : ~"ffidmcy fu ; d~.sf~~ !lD~~••. ,.,I' ,t.

mow 1"0 GET CU.RRE,NT:FOl,iI:-Lsc.TltOplA_ l:'ING

{C( .o~~l ' j j~" r l :t l l f · r / j J m G 6 .1 )

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q . f'l !i lm , ] )~ f' (i d~ im . =.sw :m~ ,~Ild.rn!£lsi:;-

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' I' Il h "n · ! 'l O t h~l!1i~'.PJ:!lf.'i lf,J!l 11 sat~!ffi! tJ!! i l garL!llt~!'I (if ~\\at~r'~.

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t~~ w.i th t h o c 50n~~i(j)nll.'[]d ~i. tIooWol)oo~[1 top111 v l ;J ,~~.

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[~d~fi~ '- 1 l l K : . ~tJ l :CtL . .w. ! J c i ! m l ; : r n l O l . < , : , i c ~ ~ U,,~

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r i 5 ! ! ! i t8'lima:l;iiilliJrn ~ o c m ~ ~ ! l ~ ~t !l~I!ltfJ" " , f i l l,dimirQ!St~W ~tI(l patantial at ",)}jlLt.f!.. "Il;Jis

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1.( lC'i:JJ .~o 'D c d~~it:ed ;; ;~ l~~ ' - ' l lJ~t~~il~

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;I~!i'ifi~t ! I i ;U iE ! , ; ; ; ( l i " t-!YLitJ

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; i i l i ia: ri!ii~if.n. Tb~1 b

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~ S~EC I:A IL i F R I EE OFFER:.II

Ii t j I . I i ! J . i l E ' • • _ _ • • • . • • • . . _ ,

1 I< f'. _ '" . , _ .~ ,_ ,_ ,_ . . " ._ ., _ ._ . . _ . • _ . _. _ " . . , ~ ." '" . . _ , ~ ,_ ". , . , ~ ,. " .,

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Wl - 'n 'E I ]I Il '. S .[ JL UC : !l T :DNC l'[.tU'i!'iS-A.(:·.!)(I' D .C , 'F w.ft !l~~h EI~b,!C :L l~1 ;. ~ : ! P ( J \ O

; a1 t~ rmlM,y E I . ! : ! M~D~f ! .I ! !gde, M iet~~ Jepg~i_~oo

,NOW,A ,a_In,a ?,..,lnch

, B : 1 . 1 I C , K •D E C K , E R:BlL.'CTRIC

:saNDB.

M'A1t.1iili£ 'e!IJWPO~'\f1Ig'4lf r". Dl . ook .,iii Dock;,. '~'.,"ill ,~_"!.I i ifuDto ,", ,' . .. .. ""t<lldl"'..,,:~ li"lii <;""","';0 1'''-0 ,..,d.~b<1'1!~i< ~ P;;;-'Ur 1 1 0 < > . 1 . .

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,

HOW T,O GET CURRENTFOR ELE,CTROPLA,TING

(CoIUiII r n e . d f',(}~~l r , iWf Ml)

IJ,;adk t a H. dming the l a s t II2U "'. tD tt QiI~~,l bi!~ ~f ml l l 1o m [l wiill ~. ,i I~'Cl!Si l td. u II. B~ r1Pof a 1 . 1 1 ' [ l t I l 1 l . l f . J : i " t ld i n ~trip of :ittlill ct lrod arc

Il!a~ L'l I!. solution or "mmollium p'br!!.fiI~a'L'~!:if IIorax and Clliii!W!:!ro 10 an ,a.ll .i!fnat!!lli ear-

I '<!Iit 1 ~ 1) t:I ll .r o ug h a I m fiW tiT.R"!.;5t~;~r~1a .iil ~lor o o : t d { ! J m i l rorm OJ] L b ~ ~ll iImlr; lIm stripw!i~th w i n ! : pwI!I1.F.!t th e rurUTIt fM ' . l l l l! 1~~;1!1~1 1 1 1 " , 9 ! : r i i , p ' , }'!.:~ E l l l t G w it.

, " 0 1 t " "l~, ( 1 0m oppf6it~

d i I ' I .' I ; - li o o . • ' TM ! i p r l r t l C ' p r . t i5 , '1 iI~ in !.l~ Jw~'\ 'o'll. '!I't ' m~tifll.'r.

TIM! tUlU~lva'I'C n"ditf.il!'l'- ro.mU.ll~ of iii.!iir:~ .illurnioum pbte i i i i i i ' ollie lead <n ' irfltl~ate. is, ~Il C ; J ! 1 ] ~ ' t i Ib=iUS4!' it w i L l i 'f ) t i i f y Dilly

~f of the ~ l@ i!!il i f ! : F is '" '"W b ~ n l ! ; c ' fl.illl-w(];\!i!: l i 't ' I I lL i i l l < T i~,R r l i n ~QD-

Jil!1! ' tl~1I with ! ~~_!<l~'lllld. &-!!~d ' lm. -J l !

·~M~'~rm t : r . b o o t e . ~ l I ! la ~ , ~ ~ O r tile qda' : < r > er'L'!:lifrro, msL!lm~il i i i I n jMflsatingd~r«~ an.tfill.~~!r!:1!i!Il'roFig. ik l i J . . . , rurcrnt I'lQws. ,w le r .lIll!td, I:ro.r ll U! i r :J~d P Iat e 1.0 iIlli; ~l th e3hliii!!II!J!!11l p]rut~. tHl~ I .r <l ro t il e lead plat!! 'to the 6 t i l@ ! ! " ;,l.!!rni!lllrn p]Me,Fnmti. !:I)!th,

~.t" f . I l ! im lm pbi.c th e Wrll!,!>t i1:1)\V&dUDl!Jgl ! !

tb e I:rnJ!l!irafiM~. ~Qdi ! l r ; l ' '~i!lnI5. ill ,ill g.P. . . .. . ·, ~ 1 ~ I.I l tmiD:l i , to tile ~!liIltlM: , t i l ! i ' I , t ; l r l l I H : h;8Jtl,

f,D:mll!lr, ' I:~1lt:rt It ;(I!;1'i!.'l! cur Lo 1II~ ' -L li '>i le oJt il e p . lj ], tiD ~Lank i n O]l~ { J ir e e tl o r i ~F1g . ~ )"OU o r ro.:l~rlie~ silltsble for 11!1«:~P!ntmli l l

ar e lb~ l ; Y : p l ! S w e d ' " , d!< lrg ing roolo 004-~~~ b !,.£ orc tht! IIIl.eilectric: ~'i; mlllll~' Itsdi!ilut. Amollj,l tli~ IIIrll 1 . 0 0 i l : l l D Q : Hl:J.t I ISI : : ! <I~~ bl!llb [~Il.taiI1JIl"~ 1 ; 1 I . " t ~ sm r l 0], $ib~md<rut t r : ! i i i : . . !i } ~ ~Jld t h e CO!;!pel)-o",iJi: tYi l:wl,whlch o o ; n , s m oJ a ~ri~~ ,,~'E<I~O~L~II~~rl[OO;PPi !~ p l . a 4 1 ; ! i ,

. \ t rl l' ll li 1m rn . u ffif ill!:' '~ ' iC!1 dtb~ to!! ! ! Ie. . : .Lro:IyUl!: 'Wctif'~r ( 1 : " ! I I l ; . + ) or til;;. b;!ID:ry-cilU~ type (Fig. 5) ~boilild 1 u J r ~ 'l,WIlI

y,oond"-11' \,;Ii:iillii~, CMm dCli"NUll l l to . is, ~nd'10 " ' i ; ) ~ t 5 , IDetslll:d jn~l.Jwd:I.Iilr;li f Q J ; rnakiug

. ~ 1 1 : '3 1 1 l 5 r o nm o r ' " , ·m D~ llih'tl1 R e N t 1 1 I W i ii ~ !~ ,

B I - G ' M · O ·" N - · I E y · · · · IWHlIUi _ '_ : '.' '. .... ,_... M " ! ! l

I i l iE - . I l IF ' E i i I l I J ! H~!1f1 F~~:r~S ",lUiro 5n ' r'n _ 1 _ C Ani,ON PlC!IINfOF T(lI

IlItf>iiU. liD!liCt $;l(l:Pf'i"~ IU)U {INI toOLS)

!ln1*jtiM."eQ"!I~t-elij;;ij\lill!I""11IH

SOLD.1Elt OOA"T' PROTECTS

.METAL FROM RUST

A 1 1S IW IJ L .rnN .b 1O C laf iJffl!.« U!l~ .~HI'y

m.~uLl.objl!ct e:liCl!illl OII~mi~il;r1'(["!'II rg~[• !o 'i~', it a t < . o a i : i n J i oJ 5 !1 1 dt:r or ziD c. T IM !so ld er o 'r zil1 £ Il3lJ iii!! J}tlllteil ill. ~Ii ! r~1ii l i 1 d t l : ' . ," -Ll il . 1 . l 1<! ] l l l~t to I;!j, ! : d il _Alcd l , JI~ ic r bd I l~ tb!llr.

Q~~ bl 'r " c l~ ~c lIJ ' i;. Illtfllil :illll.. It. .5 ;:.,. 'C rnl~I" t ,~u ; l~~f 7.i!!\j; ~M o rid o· l iir ' Ilrnm;(l-1I'I.IIIn ,cblt..

~j_~ll! (w.~mu!!(jpifl t ) l~loij on ~Q P ~f tlloo mol tenmetll[ wil l &~rY~IlS a : f f l l J : l : . TIlt o :b i~~~CUIMo . ; : ; Il.i! , d ' I 1 f > l < " j illiQ " ) J l l e d " acid ar n roJu,

tioo o·t~ i l 1 ~

ehl(lrid~b t . > f O I " ! l )

:It Is tb tW :intotti~ ".-i1,"'I'.. Aft'r !;!Ikiil~'t. balll '1 M 1l~1~"I.'I.NIb" t~fll\1 til", o)bj.a "'" the b.;ncn ''''f : 1 . 1 " " ' 1 "Sil ll~ ~,~ m~!i I I~ \~ill be reroolN!i l . b, y a:1~c:

... TOOL~I:i~~5eJi old ,aprl.i.anc~s.m~~al, .. ·i'ii{)(~els,ali~d h!,1ttdt'eds of othet· articles,

Ina), {J,eimptDv'eci. i1~a'[lil,e<!ll~<tucend [H'fI-

,teed .~ainst rust ~rnd ,~onmionby elee-_~aUng[h( lm with ,c:idn.1.]1LtIm" ziue , Or.

lead," ",dmiulnlprod1!:]C0~ them!ilst~H~fiU=

tHul finish. T:l'lis metal Is used. for f):latinghardware, screws, <Ind.artleles < J : . s .s c m ' b : l e d

-fnm~ <I number of differ~:llt kinds, or metalto :p .\·o du c,e auaiform, br i~El f1 . f in ish. Cad-

~iun:il plating il' lnluch sim]l,]e:l'[ha1'l ehro-, mium and [ "or man y p liiIr[) IO 'S ,e s it is deeld-

edly :!iU pe r lQ r, [ti~ : ru ts o m ere reslstaar

to t:'f)r:ro~i(ji!J!.ts wbite co~o'r aud gr'eat, (hmil;hility,. ;,uldthe s i! l1pHdt}f"vi . tb whichit : is pl~ted to any mll i : ta l , lnakei tprac-Hcal fOE IltiJlidf'ed~ g,l :r'l;lj'rpo~e~• Ztnc 'pIat-in g is eq u< l]'ly ::: :: im .p]ean d p nn dde '!!i cffi·de~:~.IHotectiO!l<lg<lh1 st :r'IlSt. .A r~lw1ltgl] ili,IU;

~a~.@snot as t ; 1 ' C ' < ! ! l b i f t ! l In cQ,tm: as cad=, . m,it is used extensively, and often

erred, The d.unl. ' I~uli ty oJ gabOl.l1~zed

..ron h i. due to its thlu c :O< l !t i: r Ji g ' 0: £ ZhH ;.

_ .•.. :",~.ect~'Qplah::deine is ju st aJ.S (h.~r;lll)]~ as

~aJ\!<Ird~~11!ll' and fo.rilr l<tuy.pfil. ' t?ti ,e:iJ pur-

J : . . ',ose: t 1 1 .~smethod I~ !O.u[?~norand I e s s e . x , -

~ 'pelU'~'I'e. Lead p o h U : I . U g i S used to pr-otectother ~n~ t. a, ]s .1 l ,g .a it !l 5 t f il e <J;ct~onof sul-

only simple means a \'<1 U O l l h i e . Leadp lating sho u ld never b e 1 il ,.~er]where

it is Hl\cdy to cO Jil 'lec im Cg11I(l,!;:t with food ,

EI.ech·Ollia~~fi:g',\'in not cor-tect deh:ds

ill Ule 5urf, ic ,( l of''U~~ "'fork, T~lellefo]'e, al

il'oughne:3s should bel:1i \ lnri ,ovlt ' !dwit~, ' ; igr:~!lde~·,lile!;•.and emery paper, Tlhc slltrI,lte ~hclldd! then be buffeol with a gQo~g:nuie : ( ! i f c : ompo l . :md . A scra tch brushwillhefo I ! ] J 1 . d h..r ~ d . y f m ' fij ~~.:'~hig irregular eb-

jQ;C~". Wben tbe surfaee of the work is as

SIM .D o tl T I i. as is des~1! ' ed r th e article to he [ ) IOI1

ed slmuld besh'ung oua ph~lce of COiPpe

wure whi.tlflwiU ~Ienn~:o :S UiP P o:!'t lt i n the

de.;; '!t il[i.g a nl! :pllOltiug solutions, The: next

st,epj' or d~a l l i .mg , i s the most hupor t : i i l : t1

pan .o:f ' thc, , \ 'o ' r l . . . If the deaMl]!1J~:i5 l1.Q

tlnm;mgh,Ol. good. job G,,:nnot he produced.Toiri5ur·e ])I;"d(Ntt t ;:~.c'I.!1!iVlgj ' tlrree opera-

tkl't1,sare re<.l~]red . Th~ polished work is

nl f l> t suspended ~,:y a ""he In a hoiling s o 1 1 l l ,

tian COrlf>]5ting of scmbblng 5 , O . c l i : a . H-j ]T~•lye, 2 : o":'j.am.d SQflI,P chips, + oz., (]i~,sohre11m : l l . gallon o I water. The solut io n sh,o u'k ]

' Ib , ekep t ' J . l m ~ , stone Jar . It w il! reniev e a ng'l'!las'e frnm Immersed objects lrrabout 5ndlfl.. U ~:he wcrk tobe~lfl.b:~d has 1J'~~s:o~.cle.ed,the tlme i t l J ~h~ l 'M I . t :h sbo];~ldb~

r e .r .l u ce c l! t o a'bout 2 m in, In this il:aSe thearticle s n l o 1 ; 1 k l ! 1b~pre'l':iOu.51y \ ' I I ' a s l ~ . ( O d i ~ 1

Z INCmu t C~MIUM

The work is now removed h-um

the cleaning solution wilhEhl! wireandalN!r tilisil should not he

,ol!'chedwhh~hc hands.Win::n thor-ouglil,]Y IrlM$~'~] with elean W<i.t:C'r, the

~iI·tideis duppe , d for fl'I!J.OHt ~~. : i l i l l l l : n : l . l 1 t ' h : : in a,p~.c.ldingSQ,]l)J~ti(lnmade 'b y sio ..vlypom·i,ng

sui])'~'iI.:tl.ricadd, ~~b" into one ga]lonoJW01lt~'f eontaiaed ill <I , stoneware jar. (Cau-

tiou~dollg.t[lour the water into the acid.)T']]]s sioll1t,uot:!lshould be k~pt hi the siak'orin < L locatlonwhere the' acid 'I%,illdo nodanl:age :i f tl:1,c creek s~B.'I ' I ! l j ' ldb reak, lUte!"

preparing tl1is s.oha1tlnn" it should b~ al-lowed to cool before u::>U]'i,g.

[~mners~ot:llofobjectsilll this !;olution

'w'i]1 remove !>c~Je,fU!;!t, oxide and In<l.,i';in,gf1nx. The l 'w:I!!"k s[10nld ~mt he le'ft iu the:plickh: ]Ol1gel:'6ham ls lI]ece~:!lary to prodw;:e

<. I scnle-free ~,~lrJac:e'. After I'idding~ thework is tmrlsf~'Frl(ld to armther a1±one ja,

"'Ot.l.hiLiuitig-a~]ti,gln dip, ,,{hidl, i i 3 . l i l~tt le f u y

slowly pM.timg sulphuric meld, %~lli.,~ntow.:lt.~r. 5pts. (C~ll1tJ:Ofi=do ]l!otPOtlt the

water into the aeid.) Addto this mixture

]lltrk acid, 8 OZ., and 'I1ydvoc~dorh: add.y , ! oz. This : ; ,Ol tH:]Oli~ should be ;lI.now(ld~o

coo] before lltsiug'.:U the solution is used

C(mtl.nll'I[lUs~:y;. lhecrlod~ couuall~m,g l 't

:;hou1dbe k c : ~ H in O J . pan O E eo1dwa1terto

B),

C. A. C]\m:!"I~y

diean water as rd kept under elean watermun Y ' ( l !U are :ready to !,;lta!"tp1ati1~.g.E~!~ch"opl;ltingwith. n]]ot theine- tOlls de-

;scjJubc~:fn this, anide lis carriied out In ex-

,u:dy the same manner, A. plating tank,'\\I fnkh may b e a tar-li» ed s tor ,<lge"iJa t te rybQX:~and a large gJa ss or stone jar. or anyr,~fuh~'f, g l ;l!$ s o r sto(mewarerece~ l ' ,ot! l : lelarge

enough to hold the-work and soh.r!:ion.•wi]]be l'Jeeded, Thrl;;e brass or ,cop'iCicrfods

king eTlQugtl. to span the box " , , ' n l ,).]sob~

IN:lI}[I~d, Th e electr i ' i : : ·c lU '!: le Ul fo r p l , tU ng:ma}' l'!e had from <I . ~tOl~,~.ge a n e ! ' : y : orOl.uo]d A~;ba.tter'y ; ; :h.11 'g-er of tbe tung<l!l~ t l 'P ,e; ,

Amato rme.Ol'lblt of' tile ! 'ue<l lvy-duty typil.~

n~;lybe used to conh-o~ dIe CUI':re11.t, H a

:rlllcostat is not a'i,I.r~Ha,b]iiJl:,wo :>tri.p:s of

sheet Iron imlililcrs'ecl, 'in a jar of Sil]tW~'1:tCf'wil l make a,waterrheustat that 'wIn serve

the s<I.m c purpose., N[oving tYJC strips Iar-

r the r ap.alrt 1"edUCe5, the cu rren t ~,j;I.d 'II'~ltil~C

and vice versa, ExcelJe'n rcontre I. caa bII

li l"ad 'b y this m e tho d , A Jlho tlgh a vol: t :-

!l1fiI.C'tCl"1 ;5 ll ,~eru litis not a:b so lu ic !y neces -

:;arywh~n ]l'~fiting with thesemetal~. U

POPULA.R MECHANICS

(':i1etfilic<ll s,LlPP'l.y heuse are suspended

[rutin the two Quts:idelJ,;U's. The ,cad: lJ~,D1

sticks ruay he beut.ever 01~,duO! (;nds so

t~lat they hook over fhe rods" or they may

b e su sp end ed .\t!i[hp iece~ o f copper ",rl ,11

H wil"e 's ,uei:lsed fo r ~us~M!ndlng tb tcsticks, care Sh(ll]~d be taken eoprevent the

wires £ 1 " 0 m get d[~g under i:llC surface othe SOIL! tLml . Witb, the~anl.;: set 1l l ] l ' in

.~:rOrlitof;!! WilUlow !>otIH'i'~ 

AplaHl wil l stan :to fOFlljll O!] the w01Fl~

very (]t1~.ckly., Tme cur-

rent tl~O J; Y b~ iCF~as,edas long as the plaJeus

bright '~n color. A dad:rhrte means that dlecu He nt irs to 0 1 : 1 ] glu.w h M his co rrected byadj QSI:.I' I1,g the :rheostat.

: u avo]url'~tev iSl]S'ed

du~ ]'h~05t~t f;~loIJJd IJ

adjusted ttiHi~ th.e rca.d.

in g is liL bo1 !t~ .3 volts.

A good p[a te ,w it] beproduc ed h I. at,out 5

min. At the end of''tthi!!HIt'ile ' I t . . & 1 eW(D :r le sh I)utd

be Uftcd from the ta n k by the wire and

riiised thm:(H1g-hry linn:mni.lll.g hot water toremove Ute ]ast trace OfpoIM),ncya! :aMe."When thework is dry th~~}l<H,tt,~ih(l1!lild ])e

\,'hJte and very bti.ght. FQt mostpurposes

no ftldhet"h"(!:Hmj~jH ' I .vU]] be !ce.cguil ' ied

however, :i f a I)rJghwr surface is 'wanted

it nl<~Jine produced by polisbing or buffing~,\I'il;h< l\ d~'Ydoth buff,

H YOt l wish to plare with z]:rH::,~he sola-tion Is made by dissolv~illg 10 oz. of soc]i-um cyan, ide "de,mHypo]son) an d 2 02:. 0

8(id~um hydl:Q;dde in one galion of water,

\i\l hen these 'CE]e~ldcaJs lHl.~·edissolved,ad d

< l. ['<I. ste made by l:ubbflfl.g" zinc C),X j , d c " (I, O:l •

' ! i .V ith water 'l\rhUe sdn'ing wfth 3L \\IQOC!C[I

paddle, After dle paste has dlsselved aJdd

corn sugar, 1~ o~'j to the soIutionfll.~d

stir until dlsselved. If~ prepiil.ring ' l ] ; I : d . us-

:Ing~h issob:rdon,.foUo".v th~ cautions al-ready ~lle'tltiOl'~ed { , o r hand1 i 'I lJg 'PQ i s o ! lo l l s

CY:l I ,n!C!e$.

Topla t 'e wuth zinc, de<.!n dlew'orkex,-

A .~ood reliable sulu-

tion forplatit'Jg c.admi-

um is madc lIy dissolv-

i~lg'Hl 0);. of sodium cy-

aui(lr' (il ea dl Y poL~r.:m)

iu o ne ~a]]O l1 C lfw !Uer .

] 1 1 1 . h~l .md1.Lng cya.u ld e s

u~c:gl"cat care to ~~ycdd.

g!:!ttl rig the m 0.]1 lhehands, [n the (iJN~IS!. or in

enuract Wtth . :any part or the body. They

nUl.)' lb,e ahserbed through m embranes 01"

s!du. abras le 1l5W l . th falaJ.lr~,.su Its. 0 rdi .nnrycarewillreduee the hasa rds , o f thesep (Ii~SOUOtl,5, ehsmieals tO~l ii~ii'i imtitlIl. They are

used e'l'!@ !rycl!ay ] : 1 ' : 1 lar::g\!2i qll.atltiti.~:!lin

schools and fn ]ndu~tty with ~[]illOst 11.0

:[utdd~·~H:s.Thcre: .is, one OtliH"H' 'l :hiJag to re ...

membcr Jn hand~I.j]g' eyanides, U:t1der no

circumstanees nUl5t~heybemi.:xed with

0'1" ,!l,UQwed to comein contact wh.~~aelds,Ifthis should happen deadly h}rdl"'ocy:ank

acid ' f umes w in be t :e t ;aer~,bed. AJtct" thecyanide ]1<1 :5 dissolv,edin the: waN:] ' make a

])fL!.t:Cwith ,mdlIDilUnll o xid .e , 4 J-;i oz., a .ml a

sma]1 amount of water, 'T li ll lS SF l. 1 0Q t h paste

1 '5 now ~.(1dCic]. 'to the cY<l1l l lde sO]l!l lion and

s tirred w 'l t:hR. wooden pa,(I,dlc unti l d H : 5 -

~wl.v(:d..Wh~u di:sso,lvcd :!I,dd ]{qujd ghve ,

'I ez., and : sUr to mix. This solutiou is

poured into th,eplaUngt.m.k and is. re,ldy

~}use, The wo·di: to be pll,tted is suspH~IHl~ed from thece~J.t,c'r rod in the so]utionh}'

POPULAR MECHANICS

so lu t io ] ! :in the t ,~~11k , s l] ,: ;p e nd t hc \l I'o { '1 - :

hQ']]1 the !;;ent~f rod. as h~[Q]-e. mild adjustt l B i . c dueos'laluilJ1;1 the stromge5t: ctiJ']"e[lt: ~s

~,o\",'ing",which will prot l ' t . ] ,ce ~I.bl";ghtplatc"

If ~l~'OHt!ilel'e:r is used, the rlheos,tat should

be a d i 1 l l ; s ~ ( ' ; : d . S ,O that it r~:a(]!l about 3}1

'!,NJIH, Zinc: p]adngis not ,'IS 1iJd .ght or aswhite as '~ndrril~llln~Jhut it is very dum'b'lc

and ~£:>,~:>tfUl~ ."llg' ')l i11~t (0 rresion, T he t llil.ler;equir~cl tar pr'odudJii.g ,[ll good p]a,I:{: "Min

lb e hebi'!t'~t'I .5 3.11,(11 0 . min. A IOl1~e ' r ' l ime

w m [)reducea thicker Plat e. U the \,,,,"rk

eo be pb,tedis cast irou add cadmmmoxide, a'bout /1 07." to the above soli l1i1:io11.

!l.hcrit lias been rubbed to . < 1 , pasje ,,\,jth

wnH:r. . The addidon o~; ,cad ,:m hrm . @ xid e

w1 1 1 not hyrt t]~~.soh~tiQI1 hio i' p l!l t ing o n

et her metals ..Both of these p1a~ing- snhstious may he

used oyer ,<!i!~d\'C'L' a'jg:tiu unt i l~hC!y ceasetO o fH'odrlee good resuhis if they are smrad

]TI gl'l~:S boule's, which should he labeled]10~~On ~mtl ca:n:fuity protected Iromhtea'ko,\ge ;ind acdd(; ' I I l ,L 'Thl use for Q th ~1 i P 1 Jl1 i-

po!>~s. H the solutions arc to 'be destruyed~I,ht:t mS<tj they may be washed down thesink with. iargc ' l ,I '!I)~U1i'iH~,S of VI,'<:lH~[" if scrub-bing soda, .•~ lb.,isflit'stponrc'd. h'l the Sillk

eo neutralize [U:lY acid which might heIn

tile trail .. Ifa sink is not at h;lnc],the ~Q-

lutlons mll.y hepou l"C 'd ~'I;l a hole dug ]TI

lflHI,d.~:irol]], hydroflnol"k add" In ~l;m,1j

t!:uis :11.'cidto prepare p]atillg solutions C<I,m

Sh.Otl]4 be t:dtcn to keep it: from geUing on

fh·c hatl tlStas ~tproduces ' [ O , a d l 1 ful D u ru s

whU.C~, l ;,I.n~hard ' 1 . " 0 heal The acid c'ome~

1 m wax: bott:lcs wlaleh must be ]l3,!H]1,ed

cilFcfully., This a,c.kll dlsselves ,~da55atld'hl'rge (iUal:~.tlitit':sof it areused 'forctddng ..

T hecom pletedl ead-pla t I,tll':'sol UtlQU ~snQ,tvervcorresive and can be halldk~d with-

OtI'~·'lilY serious a..utge'!"" The snl'utiou li S

made by fi~'st :po'!.Hing32 oz, of ubour 50-

per-cera strength hy(hol1nori,c aeid into r L

Iead-lined vessel, G~ass,caurwt be used

and ca re ~.bnuJd be taken to prev'e III ttl!J:acid frIO'll R]N];Ue'T'.ing" N"~xt add lwri.I·>.ali::il~

crystals, 14 oz., in srnall quantitjes slowly,

wh . il e s t ir .r iu ! :{ v ;. ri tl l a "'loaden paddle, Asthe h O ' r u c : acid .j!; adderl the solutien w mget hot While~h~ rlchl mixture is ceol-

ing-. make .t pa!>le by tubblmil'r Ic'ad car-

bonate, , 2 : ( ) ez. into a, f.ew ouueea or\ljr.ttcr,

W hen th-e a.dd mis t u r e Is co o l , a l ;M t:h!1 l

p:n.slcin small guandtie6 whUc ~tiITillJg.

The solation ,viU fr,mh and boi] ;as 1i:hllpastels d i d d , e d , Thepaste shou~.d be :i(ildet~.slow]y and in small quantitiee tu h~ep the :fn:rt~ling to a IlliJ1~nn1m, When a n of thepaste has heenaddedand the solution ha!;

cooted, c:.t:rdully pour 0 « thcdeill"liquji~ .•1 ' ea '! l'. i~ . ~g t he s e d imen t beh in d , T h~ :. 'I s c l u -

798 POPULAR"MECHANICS

has b ee !:! p rep ared as des'cribed. In pl~l-hn,gw it h lead Eol l l ; )W e . X : < J ! . ~ t l y ~h¢ S,;JiHHl pro-ccdi[i,:iteas before, Sheets 0f lead anil sus-pended from d ~,e o u1 ts id erQ d s , and the:

rh(lOShltis ,ad ju,si l :ed . I!HI~il th,~ rlat~is

bright. :alldrn[Le~~rra]ned. A C:01U"Se deposit

of anymetal uSlmUy means that the cur-rene Is too ~ldgb. If a velrmeeer ~.~used,the rheostae eheuld he adjusted lHH:H ]t

reads abo1iJ:~ : 2 or : 3 ,>,o]1:s. Good V'esiUJt~

may be had ,,,,ith. ,a.ny of theseplatlllg SO~

lutions without a rheostat if (!lilly one o r

two cells of the storage haUe'ry are. used,whiehevee prcduees the best p]ale. Plat-hlg wlth an)' (ll these metals is simple,

,00,nd no ~ldl].,tel!~ous we rk , 0 r del icate iill!'

.s ~ !'!;JIll ents a re :iteC]l1;r~d"

:s~r!!!t;yBrakie on H~fid 'l'rlllck

.FI;)]]O\.\,l.nganaccidentin wh.h::h awork-

lrI:laH\1i.'tl.S h~, j iU:redby h<l .v ing aheavilyload-

ed. truck :1"0]] back 0:11 , hbn w]dlc pushingit ~p < !I ga'!ligr]a:,~k:, aWis'COtl)S~nwholesalere~Jil.rppedaUhis haud trucks \\dth safety

br'a:k!! s as show 1 1 .

in~ 1~ d r a wi. n g o . •Til e brake ls t : J : I ere-]y 1 1 j : l i e e e 01 l1ati ; :mlsa wed at o ne

~nd lo E b r m , twopoints <Ii,udis

clamped ~Q (Is e ly

around t:he a~",l~s()that It\'\'iU dr.agalnng when PUS11~

f10dl" and hoM d!le load.VlThen. not ~n use, t h.e

b r :a k eis SW'Ii.rng fo rward

'to res t nn 11 ( : r , o s5membf t .~ ,

of~ hetruck.

P< l! ]f it ~ng Ins uma t ed

Steam Pip@!!

As beseos-ce vered s team

Ol!' hot-« v ater pipes; r<J!S~-

i ng thr o u gh. n fl~]il ,s .h(;'c

IJ,: IS emen t are tm.sigh.dy

tmless dw)' a r e pf~j,ntdl

to h,l,fm 0n I z : e with the

s u r rOU~HJl . 1 1 .gS" S·~z e tlre

t'O'i.'elfulIg l b e fQ r e fun.isbin:lglin' the <J;lUO l]1.1t ·0£ p.OI.i :n~req II i.n:dwiU l i H : :

~'xc,~ssu'l.'e.and th.e1"efo.r~ exp~nt>i'i.'e, A good

s i .ze to wi:litiill,ny ld .nd oI Jmint \ \1 ] 1 1 3 Jd~

her ,e : , . is m:JJde by i ;o : iki l l ig .si.zingglue, %lb., 'in. wllihIlr, 1 g1l1., ovenliglh~,atiLd then

m.dting i it over .1 1 ti t 'e . ,"Vhell the gl.ue hasme:~ted, srit in about two tu~h.ds oI nOtlitfor eaeh , g .< l .n m 1 ~f : glue to form a paste,<Ii,nd appry l. t with a bn~,sb.. A:~ter about 48

h ou r s the p i p c'S can be p al n ~:ed"

Gas PIpe F:I. 'o~ec,'t;s Wa'r.ning' Flag

A n A I."l.zo ]]::1 J.

coutractor 1 ) ; ] S ,e :s a

s lg ~. tf l, ] O r w . l' I. rn in g

flagth.u winds in-

si d c it g'as~:p·h) ,e

st ilk~ when 11"o t

nec,d·ed on the job.

The 'stake isahnut3 ft. lang, ~sp-oint~

c:(],011 en e C J : 1 l d , < I 1 , u 1

has a 51.~ t, ~ Ht~de longer than the

\ '! 'i (]~h -o~th~f lag ' "

in one s ~d.e. Theifl,g is fas.tel,~e·d to a ])]cce o f U-ln,. rod,one end o&wh!ch has been beut to the8 h, 1I1 )e o f , < I , ,crank Two (If three 5 1n"H

riln,gs., sewed to ~he out~rcdge of the fl",.g,

prevent It from roIH!l1.g ius ide,. and < L

w asher, ~c~·e '\le ·d to th~tol? [d ~llep'~pe .o!!H

drilled. fo'l!' the rod, keeps the crank frumdropping in~·othe S]i~ in the plpe,

THE!lE are. lunumer~b:~'e:Q~·~m.~~an,i;co b j le c :t s " Sl1 chas fl .m 7i'eT~ O J ,nd Ir l1 J,t .

woodeu J1Iovek ics" gh,ss and :pl<!i~~~'ni!ck-:kll~d>:s~ ~e'ath~r OI!t t i .c]es" -et,c., that eau I : J @

g:iye' ll a . bealltH'l.dand ~a:s~ir i i ,g nnisl~lb:yelecbop]ii..'~i.itl£'"if they are pmpedy p're~paredbefere suspeaslon in the bath.'The l ' i l l O st important part of the process

CQNsists i .ng:u' l111\ i:g~he ohj,ed a c(l;ltin,gth~t; wmcl(lnd~.c't electrleity, The co-atiugmay be either sprayed 'on or a.[),pUed!w~tha ' C i l I ; U H : l ' s-halr brush, ToOIIp,t, of: "c~e;;i:;t cfdJhl l losle ,I(\!~;q~~"'i'!.\!~.J...i~

PQwde(, C]~"i~; : l~ '~rI i~~~ofteilit to,!) thick

addin,Q']acqll.lell thinner Ull

co t :I Js i \\ lt e nc : y ~o : r s . p~ ·ayi l1 , g i~mixture may b'e sligh t tyif ,i t is to be applied w~th;), I: '

S01OJ1C brouae -powders,c1opp,erpowder, have •~nil"ln base a,nd are u O i l : .

tory :for.~his,pur.pose.cop'per powder C'U~

a~achem ~cal1 , 1 O o r a III e . 1" 'h e

l:mixt~rc

sh ou I d ! b 'eUWl·o~g'hlystJ:r:re(i bC~( ) 'Fe

litis : r J ! ] J p l : i edso dla:t a .U the

pOo ' ! . v d e r ihddi n sus-pension. ' ] 'h]s

IIItxtllre i , ! J ,

eonduetor of e [ed : r : i< :hy and does nO i t oi-fe r :Rl 1 !l 1 ch rc ;s i .s t1 . i, ll c~ . '\i'\I''lilelll th e

~~I'--....JUIS dricI~l,U1e objeC:~l;1layb~p.~aJed

; , . . . ."" '- ,C~·~~~ of coppe ' f , aftel' aco<~ i."f" '1 *"l~ Il .J : l~~e r~n b e . ,u : ld ~

ed. if d{lsired. 'Be~or~tb~ eel-lulose-aad-coppes c.oatingis ,a:p-

plied, the objece .g,h oukl,' beeh er ..ougM:y dr1ed.Wood.en. objects

should~;e: ~on~d. ]H linseed ' ( I n ,which p r~" '~ fits t l1 e b ·. . ,s .e eIDatfrom so.aking in . ~rod ~t1l!~ldn.g

1 74 POPULAR MECHANICS

the wood. P];l!l'l:'~r'-{if~

pads ob]ec:ts.,whic:h~uight ]H;: aff.ectedi bythe el>li,lctr!i)p~:S!titlg solu-

tion, should be slighdywarmed in an ·oven tore l l~o ' l{eaU ttl o [s t ~ r eand are then d~ppedinhot wax orpar.amn aft-er whkh '~,he copp~r.

laeq ~·er li~~[)!~.]~ed..Th isw~h:l!g ti:'il:<l.t~h.~nthouM: not be g.i.ve!J!.to

ifl"uits er flewers, as nlucb of the surfacede taU ' ! I¥ol.dd l]J,edestroy'ed.One electroplater. has produ.~ed. some

glleamingch tQ'r/l ]um drum M~iclk:s. that u re

very POPU~O l .. J • . The ~ti(:ks;!'fe tu:rl1ie;d out

. { ! ! £ [~ghtb ,u ';) 'l i'o 'Q d , b oiled ! nHmeed oil,and. painted w,ith the copper-lacquer rnlx-turle,· Tlileyare theng-[.YI~1la ~..1!-jn. layerof cO>[l1p·~r.jl,t~ .~n.u:at of t lJi .ck(;l]1and. :afif.la,~

p~:1dngo f: ChrOI:l.l~um,. The s tich <i\re plat-

ed ,~~!I)w~y to ebtain a ~mooth surfaee and<I.!: 'ei:nt:!.ff.edne:tween eadu.~]a t i,!l,g' 0 [H~['<Ji;-

110~,1. AW· ! l igIJ t is h!I1ng on eaeh stick SQ.

that it wnt si.I:i.1li:wl1teIU. pktced : in the plat-

iug b~tl]. \,Vhe'll the ;'5tkb are finished,they ha :ve abo1!lit the same wetght. ashick-(H'Y, <l\r'lda:re r''',1!ic6iG<lUyunbreakable..IftJle ob j ec t to !b,~ p Eated .hacs no base

to w]lif;b du~ e[e~tdcaJ cnnneetlnn ·e:a.(nl:ie

m<il.d!c~ the .con.duc;tin,g' '1'Jir:e Sli(liUld b~

wl'a:pped. around it loo.!lely aud the posi-

tlo.riLof the wire s]].m]]d be changed aiJt .er~adru pbilIin.g prcu::eS!>,S!I) th U ,a.tiyunevel'l-'

1 l e S , 8 < on the s u r f a e e ; made b y contact ,wi th

dudhlgM,dre to tih.(l b a > S 1 f : ! "y:itl t a small

an:HllIn't Q :r be,fit~d denta] wax. The 'WB!

hanllHli$ and holds the ' ' ' ' ' f l e im place firlll-

lY5o, that it can be suspended hi! the loath

as In F.igs . 2 :and 3 .. The copper=1,",cque~r

mixture :should, also bepalnted over tfu\v,axand around the w]te.,Th is en 11.1IIec=d(l,~ >call be hreken eut after t b e l ; first

p~ating process and tb e ",(dre 'wrap . [ )ed

~rou]]d.theartide~a5 a l readYI11i·~ :m. t ionm1,

for app]y~ng t f f i a . i f l succeeding coats,

An int ere~dng t ableor n.a:ment. is . m a d·e b '

g;lu~nga :~e,\'; poeb bles in

tl1te b ot t 0 li1Il of a !>~all

S1lUeer and insert! Hga

b ranch aJllong thCfl:l t·represent a trM. 8m~pieces ,of rubber sponge

glued to th ebrauchmakereaH st ie e huters 0 '£

~e<\ye~,. : B y di,lll.li.ng thea . r d d > l 1 l s ln w a x a n d tll e n

palfitl!1lig t11.c:m. w~th. t~~

e]~~ttucd~y c : .Q nd u e '~[Il:

eeat, t . ] : u e : pie<cem~y be

fi.ni:sh.ed.by plating i

w'ith silver. Those IWitfamiUa;r wi~h e~ect:roplatlng'. wnlf inc] tn o,rehdor'm.a~ion. (I

' the c]~elnkals used, and tb e:ir :p r:o PQ r t io ms~in the September, n M O " issue o:f Popular

Meehanies, p , age "Ui .

Drip Pafifor 1 f h . e Gar,aJgo

T"o keep oUoff the gar'<Ii,~!!':f]onr ,andpre¥('imI less o r ' ~tllaJl~.a]'t:::; when ],G,ak~

h~~r; .a t lautomot 'Qr~ tbif;i, ~h(l(:l't-r,n~'h)]r .1Y

hm, been fOlUimd < l! gveat c(l!!111'~n:i.e!1(;i~. Iis Z lu, d eep and 3 (l ' in . , 8qu.1l:. r~j " ' l ! ! i . t ~ ahandle riveted to each end < M l d . four castersoldered to theeorners,

"Ti ioy ! ! ; IM i l i 1 ; O ; F ! 5 i i V,M'$ .d1!~n'~led' in co~p~ by',~lec~m~Oirmililli~thniqlllll! oumlt~t:i h , i ! L ( I W . ,

D~i!Jli~ilN~~vilnhe· "rimmed 10 ~izi!,

Elfctrrmalillling 51i1r1~iwiii lh mohh ~il!;eIh~iw ~ : w : ~omE : d j lJjt(l5~i11llllt ilr(iIbo.a'r!: i t D l n m s .

ril!L~d wi! jlJ t>er;J lf ! l ll l i~ i~m~de .g~glPIJ~r wi~,

i!.'!iliIldl ii~ l!J.ifUshl!!d: \ '! I1I~i l iPOi.W~rutI ;raphil i l ',

Be s u r > ! : ! dust 001ll!~ i!\Iltine~mpr'essi!;)i1n d{o rm s a (conciw.tti '; 'l!! lead ' ~ o o Jl'.p ;e r \\i1ilf!!"

ElectroplatinY,OI l lc an !p 'U t:a.1iI,@W' Sh lil l'il@ 0 1 11 me 'tal 'w ~th,a 'n ov e ~ Iplal~l1Ig

s y stem tha t C f c a , t e s ; if s ,own CUlrrel l l t

C o O l l l i b 5 J m , a bW 'll rp o l , ~ . gill~~.o rp l ! lS ' -t ; ! C jar, 5Q me ,~IIiQn '~ em ~ c al is , il jit d .ycui' 'I ! I i ! : gCit o ! s~mpli]ioo] ,~Im::~ropl!lt i] l l :g,system, It works wi~l\tou;t baUerioo or

o~hei l' ex rem1 ir n C l I lr ren t aJlld does a liir iejob of d~:il[t.mg d!i:ll~tmetalts.Sin.re an clectrjc current ~]ways

m . 1 ! l S t iP a S l l l b t e ' !( i! :r e a , m e m ~ , Cfl !1 l i 00 dis-s(td1lii~ed{i:'~m.its:m~~tiQl1i !'I[![lI defj l .~-i 'Wd 'G-f!!l. d~!I! 'ed o'ti~ect. s! lair ldaMip .]: 'l It in gs cIa~~ . ~~r iv e t i l$!;eleetr. i.city£ : 1 " 0 ] 1 1 dY lJ amoo , re cilif iiem,. e ¥aH b8!t~·j e 1 O . The cu rre r . , t 'W e '·nood. :i n 00Ii l ' iBiim-p[ffiedI ilya.temis ~ C -~ ijr re x.S !,t ed . F or

thiis we' ean thank a scie:nrtJ;;;t, I1 l1mei l lD l iJ il ie i l wh{ l d j~l<\ered l1 m m:e t l l od I ! I l Jt886-aru:l nevei l ' drealm.ed of the t w ! . < > tw1!'re g~Vblg : iJt h e f l " ~The I : lmJ]eI ere]] oo l l l i . i s .ted . oj' an (lltt-

el' . E ~ r C1 } t l t a: i ! :!~~g ,~ i ! ' i ~ c ~]oot~ : i m -

mel - sed in zinc suU!I.te:!ll"lliJi. a ll . L tl ll le 1 '

POWIiUJElr in Wihleh srood a oop~e1ec~oode it'! OOP~s! !1U'a le. 'i 'h£i,tOOI'-

, Il lo w ap ot . ...pmFcfa'bffiy n_ ••sho u ld 00

l : borougWy cl~ by' ooH:ing . i t . I]]t1 J e m ~ l i l I i l . '-"RB. 'T h is ~ ~tto lJrIa",i-m lm lp iIn:I$iity ., 1 'ihe : hole :i$ !p lugged

winill aoo!'};, ~,!l!boor $ ! i Q p p e ; r , ' P ! I " wj,tbJ1 E I . ] J O l I l I ' O O l.!i3Jyer[ ~uaffiilll 'wax,''l 'i!,e : IO~eoithe !I*lt ls ~mmElror.i!d•.

huit w m l J e . 'd J el le rm i ne d b y thHt q r theglns! l jlilf Y O I J I ' D p]liI&e i.tin, I per-fo : r rned the job in _!:'!~t~ wjth. l!.

~j[Jclt ROwer ' pOt. MId aj~J:" wt: imrn ~1:lBlf;',g.ilI]Qll gJo s s jflll[~ A clJ l t -o l i~~1 IB1 ti cU ! li ~ j~t as w~]tMf$~ry 'of·· m.~~~;!,ou

,may wQ!¥i~r how a "' , o : r oopo: c c l ; l t ; I l Y U : a r t e in WI\lI i :e t , wh~rni ! : ! Rcl~r

'wj, tThJIJl l.Jta . rn f l taJruic hiinrt, can.

! ; ! ! . ! i I E ' , :~o ,~ i i loo~r . 01 ~QW.

S l i m : i l b r i90~IJ.tl1lllnSo J s : ir u v , e :r , . 2 i i n c , m e l le l "OTWl!!a~ ron ~Jle'~e StjilU'J.\let ~fie]tp ' i i N i e meta]. ' I ' . m e exp]anilltioill lies J i l i ltwo ~11~om.efli3l c a n m dissocilll!tknru

od iifililii~tlot!.YO l l l b a . . . ,C l wimessOOl n~e d i iS S l lX l m =

t io.l!!mactmm my~f:.!!_..d"~i~~. i~¥t;!,!;i.f:kitcnett-- 'Yli: ! !en.ywpou:J'OO talb le & 'lIt

~[]!toW.~ltm. The salt crysl:ill.'SC!!Jted .ink! t h ! l a : r (Jonprilf:l~.tlmd chIQr ir :ve!:8 ,to.D : l .' l.Thea,Mv idJ ! l d b e~n theml fL .e io l '1 t l .m

~rol!l,eloo~rice:l\ia!'~ 01 t h e c l " ; v 8 <t ia e , ;m i l , e:n: J1e Iged fa s i O I l S , ' t m ep o s i l l l ' l o ' e ' wn i l l . i l i i tQ chlorine' ll~iuzyboeca:me ionuet; 'll. The!;a.lfs .~ j ! r !p lD :~ :11 l :gacl (h.€!

A: i : thfu;point t ]m w cll .-bm wnc~p b~1~"oplX$i l lepO:Ie:a ~db;til!.:al : pO J es f e p e~ " 't ak e s ebrugeka!\!IB th a "tool"' tJhatmaik:12S

g !> (t '> S i~ 1 e. ~ (ibj~~ ,1

. " made ne:g!lUve r u mkllids tfir;!positive,mem] l'C)r

I D 9 ! k . e s t !: l e.m s t ick"? Itw m b~ ~lam~ai; afterw ft getl>arah,1S : l i€t IU p and wo(ld l l !g ' .Oornm~rc i :m : l .~lec~pb~~.

p e~ li!iC k .EW a oo u t~ n;e ~lC ~ r.!t .a ge:1Ni!reup Q[ t hc .ir S o lU lt ll io fl lStb e~ hi'Thli$ ~watorr' i . o . s . ; ; ,

, "hI!!p]e: sys!.eliI!!. keep . ' i j l : l ! l ' the o

s3lttnatm. Is cfusceJU.~,Si:n.QEl~he: ,el l fC 'WIB1L

. . t in c : i ! > : a c l . \ u d r u y . . i : i Ca l~fo.l'm.ati,(m, it isnm, d'I'[Jr

~ ! 1 ; d ! i b h ! l ~ :!;be :h! ig;n~t; CI)IN~:~

yi~]ti~,~~¥~e, ~t l ,?l l_ctiwe,cI : l!: IM'bJilitatW1~. :!For .msmruJe,i

, r u l ! ! e ~ r O O ~ i n : !> U : 1 h t 1 ri c a .e i d ~IJ~[Ie5~]J~ cUifilent:ata ~.vu]taand a l l ll lm l l! 1 l W I Y : I : in : s o d L i 1 l l l r n . h , y(ly e) { JJ oe se 'li'e .llL b ette r. B u t,00 ~ .to:!"you ' t e l l l~th~ O

,chemiCll]s~iI l f:ad. Y O-lit sooll i ldU ! ' . .. , ~ hm:l!. smru5 t#x.pe ' l '

. jog s 'em . y,®<u'Un IJre fttallij~i!:u . n < !; tm e m ic a D : s as inIDOO

f $ . M e : sa~ twin s e e · y o . u r h l ' ( l 1 , ! ! g l 1 t

~1ld p]<tting.U~ t h . . e , chmtrt :r:o,h!ill~y,@ud~

~ .heooemierus , yo l1 l W f f il L t tolffi~]s;he:rthe current HowindimWnechart , . tM ! fils~r tile p . l ! : l :p , I ' w o o d i , A I . t: ]u j )l Ig l ii , U r e , e E m : rmo nvalues 1m OOPJl!ll"p~!lting, ther~aatillg : p ow 'e r ,q f th e ".~jt~WJ (!bwin 'be tl1e, :same .flilt ulliLer

~AV~~m;o

UV5(jm~

!.1\1?O" , ! ! !

in a Flowerpot lily E R !N I ES 1 i A . Z A JO II G

1i'~J! 'S (! 1 I1 P JU1 J dy ~o g g = - j l . J S ! t pmu '~ IOO : rr oU fih '! ilil~~nO'l '; 'eriPQ'~' 'En;em-

i i C " ' ~ sg~hJlI:i(]11 i l' li tl !l ' j < ll r, a n d Ipl~:iiifi,l!. l ~ g I I n s (1(11 \iO\~ (:o<rm. A b l ; l O ' , e

riil!;~"IE;(li"IE!mi[l'Ins {Oif p l~ air l, !: ~ .r e a 'i '. al il l' ib !l e i ll ! !! ') :p er ime ll iM , qu l' I! l1 ~ i~

lies, ' rom I!e;rg Chemical i l C o . ~4411 ViI . 3i'~1! S i t . , New 'l'Q rl .: : Cit1o[j01a~_ :Slmalf h[)tll,,'S ot rnlil1lmOiil oCi'ii!3JI'iiI,caI5~~e ,[lIS<} !'Ivill I~bli l1l toy 'sImes, s[lIh:llas ,re:pla,mtlii,snt' iOOi l il ' 3 for dhi!lml~tl:)" :lle!~.

Fm my ,own setu,p I: , 00~k l d ,m us e,zinc u_d,i!yt!:;ihr;l av!rl~abl!!t. ou4~l i Ie 'Q~

m Q : r c 1 ! thiB!ll 1 00 mi[JiW1ij)e!:eS' a d ! a).

m®!l l , t :1,5 Vl}h~, P!'orn]f!ed g~ pl<!tini!!

~we1" . (A]Jilln~lIiID ,is easler!f;hanzllIl,C" and gJ,V~ ~n mQ~"

] )0 \! ,1 a rJ T h e e i~ ~ cl e w~ a I l i .hee!; , o . l '

~~_'!) l 'U'Jjg,edl:o fitcmuleIltriooilliy w,~td_Ul.e i ! U "Wi th a OOm1!ootlO!f.l ~ ~Id l .~$dto ~t;,gallow~ fMlll0tl. as ~l:li)wn. 'The;rn.tilse~:!Is .a hIlBDar. f~orn wbich I i :o

llilruralftire artid e:s to hllp .lak d.I i l o l ' the coppermn, :fihe'e~'~QGl!yte

ins ide the flowefPQt w ag a 83 itJu raJ~e d! z 1 ( ) ~ U J U < m , 0 0 ' 'OOlJ,etEl!!;l[l'-a:re ( 0

w : : i i l l l i ! 1 . ga.c.OO"l l i ! " , e : x . t l i , i l I . " ! I I : f ,

~YJOt~]E\il)fQW"!] i~. ~p]~!i 'Jni~g:! lh~e ! . ' Y J J l b l : ~ s , d l , t r i F ! ! ! : : IU!lig QJlerai!: f lJ!: ! i l ': im·]JoOl:'ta[lt beeansethis j~ tliIe 'sooooe ofthe QOjpPID' you .aiI'Q pillillting,

Thli! $Olutionill flIlil flow~~t lS't tm d le : m ol1 'e o o n. d. uc t: i!" ,e fo r o n ~ pu:r-, [ :l@ sehy ~, :!!.dtHti'on 'of ~ few drops c I l ) i I :

SUU~F~c ~eidl. A~'fIi:in,if YQU!lt'.e l~~

eKpe : r£enoed in . h8ndllmg this s ' l ; . , thfrSIDnereS'llU.s, can ibe ohwl1/oo w.iiE: l l .lIooti.c acid . ..__ .gj f; l\ ie r t J\ i~213~wr .00[J jt ,ki:ffild~",la : in p .1 !I ls .1 ;i e l : x : M I > E i s i n iPhot~

s:lll(l:)pIY!!iw~o:r in tile :lI~rmo['v~]"f :rom I . \ h . e ,pan~ty~helf.,'lIIbe soblltion tib a \! lezy moe

p:b!i(l ~!;It Y Q . 1 ; t ~t'I~ t h e 'oo:_~rIt]~l J l co~r . TO,get .~.COp p e r

p]atGt':srea~1y slJ:iiny, we bor.W'W al lr i. C ik ( TOW ~e P r (i !' ): Ad d fjI. b : " j ~ ;(iflil!,'h]e;

SugAr _ lu ;uon! 'Wl l rythis

lIldlandish . sh~uld sbinetbiinp UP. : I l { l ' O O d , y ~ly bow!il. EJ u ti : L ~ W M J m ! .

'Ul 'ated & i l1 J l i ~ t ! , o , f l[tinc a 1 ! , l I D f a t l ! , h · ' e ! l i t e C i .as '~~l\e.. 'Fl:l!r ,~g.m~~ .• ,cli!r~[mn

:s wfate; F O ".fs lh re r, :eiiilvet' : m t r 8 l te , ; 1ml I l i c l r o 4 , ni.cb'[ln· s1 ! I l l i f l l l r e l 3 l I l d : mc];!i!,cl lnoriile; m l . l i $(I on, A .dd r ng of :m:m:Ji!J-m 1 ! m i l clu~om.e o r r e n l i lelpa,

A J : 1 d . ifii}W b . a < : 4 ! : oot rnl t ea"l' liyqil! lJ! ';!;-

t . i0Il, "why d 'o the limp:mg;in~ .me~1Ions .stiekte> the Soubjied?" f Peirbapsyo~ :I1 iave g1lI~ . eJ il read lyJ T I ri e! l: ID s r~tt¥e!fl]ebliQlfl..lJ,~~e a:U!;£le~~jllEll:'ldlp1'Q.

pe1~edby m.e ruJNel lI ft i loo . \Vhentlhe-y.hit l : I~gobject they pklk: Up'ru1 eledrollL{o r m o l } o :r lli:l 'f$ d @ p ! ! 'm : 1 r n ;g upon tll .e5.r¥~)~(l~) .. Th~ ¢har~tll:"l ,~h iQ l l ! is'ne'U;ha1i~~ by theIWe.i,'9tive ,el~hvn<trui n , bOOJ~et , al;i.< i l i o o m : h e J ! d ! w[ti:l m ~ ! -] i{ l: !1 l !: o~ . o:W1er s by :!litOOlJ!i~alUfacl:imL

SO!lf!j~Gimm:icl!.5. T.he ·hcclli rren;i ,f1ow. thewrg~ ~@ !

clrJ(ski!ls ~.mi tire tm,!sill!~r thep]a,~"tJsm!'lre. HlP remperarure 0:[ the so-]Illi'imu; has lil!!~snmB dsct, A f:lillrilIDrd .e t - i : t~ t of : t . o o rnUl'h CUji\t'en:~ ~9 ilme : H - e . : : t theproo eall " tr eem g'" a In .c it heIllrolIDis S)!il~d0.Sm'ipti 'i"i!\,,SQll i .e t imss 9ID~~ioM@r re-ml)V91

~.df~IIu~fi!e:nt. (1[ ' th.ew-nrl! l!iTIJr~e·

] } b o o g - ' i lPilliI_]U:y~ ,';I Ip p.a re illo liy jit. 'a th e re o

s uU o~ the d ii..!)]Jcl 1ini!loJ h)'d1rogen.'fhis s;;mlE;! hydrog~l1,by its iil1.cll1!l.ion,.Ig t Jhol lgk t~o b e · r t : ' I \ I . e , r a c l J o . - r !Jba '~m",ikA;!s

.p Jatied o oro wUm har-G e o o U i , g h to· actas a new' ~fm!i! i il ii lId8~ IW wtlms.irIafl!sami othefpEl!rts,W hat 1 0 p lilJre :l A ny '5 r.1 '1 9!Um .ete !1 ,

'obj~ are ~f O o r

Bunfit.e~. [!out ' them.etai w o o p l ! ; ; ' I ; t e d I mU.B!:be cletm-chemiC-lllU:v c l o o . l f : I . no t jnt lhi.O'l1Sehold

"","l is , ni!Jt~:rnmelU.d.edl; 5 : ! l l r u~ .stepa:rtides eanbeeome imbedded! m ! ! &

WQr k <U1d !( ow . l iP pia i tm.g .A]~1)Im, ~~M 'k! p]llre·~

H. 'a. Mlil iii . r o . ,cl~, Oxi:d les ro :rm . on i i:B Ud~aeas Q 1I!ick Jly as YQiI! ~~.li1,!:trr:yI!)U trypJati'ltgalli. a!Wl1~_I l!U1Ir. i ! ,objetyou'll . Imd . HOi tJm.g will stiClkw H.NliMI:lA!tta1~i(l M t ' ii c . l e : ! i a.1so ean b

p'ht:OOi trl!t~ t lhe--y firs t mwt hemad\]:,oo: raduc t i :ve" ' T h i E l ; ea n he dJl)~e hb:rl!lBh~l1!g t'l'u~mw[ih ~eI1ed i!lraip~

u~" Thil:s is · thep f ,@ OO S$, mnp lo~ I,elect;rQ~yp:in!l.wMch p lf l; ¥S , s l1 . 'c i: lJ ml.i.lt

pm-tant ~rt m . ~t[filg"~]ectrof)[)rming, III somewhat sJmlil:

~:JjOC>eS~, ~~, all&mn~d; great limpol

'ron.c(! l r.!thE! .r.mml1[9ctlllrtl of illl.tlrielil

ly ~~F 'O O P1 l!~ , lT~!:!~ii!~!l:]r.!! ~ from:!n'i~utetc>E!li.IgIl! niieke[ MI~h~d$.,ThE!!deslred nretal.iiilpJated QlJitQ a foxm QD:tI!i i l l( i :ret A smal~~]!lro.iDl.ieaJ I)J thp;i'~ is i l' J i ~ ' t 1 . l : r c m , 'ne OO ! , l . l p t l I U ' OO

:sides af a CIJJi;.glass saltshsilrell'lIlCe

p : ressed iil'l!to ' \ I o " \ a ! X w hic h O O tlo m B S thinold ;SJl1..d is then ~~'l!!~Mtetl a ' ! 1 l i l p , l a . te G I . T he pf'lJl!!oot. JS 9"ti;l 'lY f!llt d i s lmar l£! 'O J selid ru;clre].E !ec tro p l8 tlng is ~n aro' il 'n( ,[ YQl

n . C o plLatedm.eta] may be J1r~Uv.eer decoraJti! l i 'e , o r ' bo l b . T he ,ehil '~rn'b:um~~, 0;11 yO'l l l " ear, tire si[\1ier coating 0liI 1JIi®wUlhl!!w;lli;~!ln I: ,mw J : l ' n . @

,,~iis in ,iIt:i~ooviJl:Ji i~ l : ' IB , E",eyour Jillivorite pboll~gra~, ~f'd~iilNOIl!;

s l l l l l . p . e , l : n : I ( 3 ! ~ :I! mEl!srerpressing p ! U e

wli\d~ i)\!\!I1iId its O ! O C i i s r u f : 1 ; ~ to e [ e { l ~

forming. ~

8ma:l~ sJ!gI 'J~iS' af p!Ue Ol inc arcllvllil-

lOeforeIP'f'oeeediE;g' to eleettiJP~,nte ,\:\l.itl!~

eO~~PEl ' r ,sHv1e l ' 0 1 ' o th er metal, Cl(;!~' l l tbo artt-'~lc!j,thfn'(l;Hgll~~I',Hj,th e' ,I!e n:s t ~P(),it .o f gl le:3 i .~e,

0:[' tll:tt\lri.n p :nl ! ' \ ' tmJ tbe (llYlms:i:tfl"Ollii ndlber·

!ug. ' 1 "h tMl pon!l .b lh¢fll:'tJor:hffi flr~d :!:'~b~beffl

ov'~:r'with ti. eletlrand Hue l)ln:,~,~oe)owder,to r oiugh () iil .! . tll{~sur,f~:c(:!sUghtly. In~m.[ly, t~reI I l lOV\ I ; l ,nll t l '~Ce~ Qf~l'e[!Se, dlp th e I;l~UC:t~to bep]srtedhll aooiUng pot:fl1lilJ.solutL0u,

Illude by dlssolvtog4 'Qr..Am,(!!flcu:M tud~ 10

:m%p~ . . of wf~t(lr. Douot tou~hU~:~ w()r'kv.rUb the haliLda fIJ,g'J.in.To a~foM t:oud~lngit, Inul.g the ~i!~·t~ell!8nUle wilt(JsbyV!;·~.d( '1: l

tb,~y ~r~ t J ; J , b E ; ! 8ui~l:pen~lt'"ldn tli!e l ) l : 3 J ~ ~ n g

bnt!ili" befQ!re dipping the:m in the pota:fl~,l ao -hlJUOHiUU;(lUhold fbem byU.l¢wlrea uu.d .e rrunntng w,ater tor t~DmLl!I!iIl!~es'tQlt'cmovettliepOUl.sh .•

FOl"'p~ntlHg wnh eOPPI}:t prepo,re tbet'OI,h:)! '?!t~fi~rS O r n u U O ! ] : 4 0 : 2 1 . C( I'P f: J'~r su lp li la t tl : d'lso

li lo;lveil h~ 1 2; ,02: . wa.ter;adt'l. i!!tr'Olll;g nmu~o~~1l!a:al~ lUonurdn :0,1) lli!oregreeu ery$~1l!15areP~Qdp~tlded. 'The~1flildmore nmuloubl a;~a

Il iUr l!:lltU t,~~ ~oon C:TYst'tll,s t l lce rc '· !Us:! ' !Qlv~g:lvlngnu : ln te lll Bie bJue l1 !lo h ID t h :m . A,.(JI.,(]_E!]owly

fi strong a:a lu t!]ouo! l : D(J!tn'sstllm e .~ 'nu [d~ untjl

tbe'~)~~H.~ eolo~ d:l:sa])pearsj l'~)fil\'inga dennsolnUon; ndd p o : t : E l . s s . [ u m eyanlde {!ga~:n.

·oJ)!)ut Qlle·!g,u.rtba:s; mu ch Ill ; l jo \l l~ tl!S~tf:ledIn. tb e deooJOil'jz~fig Vif(i0(l:'ii~. 'Thel!}J mn.k :e thif,l

~h.ttio:t! UP~Q 2 : qt wlith w~tel", WUhnn

eil'lctrlc llreossnre of 3.5 to " ~oU'$.ilb.~s wJll .

g,lveluilioven ,i;ll}:posno:l' eOP:pl.lir•A 1 5o [uUo !U fo r .sHVeit"p]Htl.lflg' l i ! ! l : a . y b e p r~"

'fmroo as t:oUow~; J}ii$t!I~~ve % 0 . { ' IZ. , of 0 0 ' : . 1 1 ' 1 .

:lWie;"~Ifdl!!nver n'I.·trate: tuB OIZ. o:l'wMel', amJi11I1ow~:y 1 i , d , t l ,Ill strong' :go['I' lUon €)I( pot l3Jsslnm

CJlVl!!Jra.e~l!lt!H no more w~Ut(! ~l"e('.lpnnt~~['j, thrown (I() ' ' I \"11. , Then [lour U~e 1:!:ql~~:(1.

ollnndwliI !:!btllepreC'ipU\jl~e b!\r~fnny,.

T'bhli ~:s be~taon~ by :lUUng tb.ebotUe wUh

wll!te!l:', 8hntdng. !]J]owiJlg~lIecl:p'i.t:3te to set-

He nnd then poo:dn!lt 0« the' w:fite~, ne-p~!l,t:!!dx th:[!e~. Hn" l1 ! :n ;g flnia,hed wt1Jshl!lligU}('~ pre·

c[pJ~me, alow!:y · 1 1 . 1 1 1 1 ,o It. a selutlen otpo-t:ar!i!5~l1m(:!:Vfinitdenin:Ul tI.ll t~(i(H'e(!lpltllte l r ! ! !

w:iH gIve a, . g o O O . . ' a1b i t .e ,eo{lJt of !dlverl:nU¥i;l'nty trIh~~U~ t~ hulf· .un· 'ho'U!It; !. I l ise 2 :voUsf'(li!' Jarge ,arUc]es. ftllcl. 4, volts for very snul,]

niles.. I1'more- selutlen ~a:reqI!lIrOO~ It ls onl.;l 1I e~ ;e$sn ry tQ ' d 'ou !) l( 1 : nU ghi"1Th1l qUi\I,ntlt.it'ij,

:Before :!li~,'~r'l).~ai.ng,f';u!;!1:l :lnetn]~ as Iron,

]end, pei\lribel', :li.IIliG.,mull. be eoated w[tb ~Q~

per i:n.tbe allm.Une~pper bath deserlbetl

andtltie:n treated!. as < : I Q P p e . . r . , Oa.i;JIrl; : lN1IS, coppeT. il}er:mu.b :!'jUver~(Jle;ke~iJnd,Bueh mebl~e;s~]'verean ho p]:l.ted direct rile depo'~n o8~lv@[ will be t!!Jru]l tHulm.~st '~~I),~li~d~Q

filaysU!le .M o d el :Em l .g h} (l~ r~London. T ' I 1 . e be s t~,~tl!JoU If! to ~se n rev~lvi:Dg a;ci'll.tcb bl,'US.llif on,c d.oes notpo3sC.SS n hui!8ng Rl!u! :b i f l iR.

lhl .!lo ll 's trntch b t'u sl~ is good!. 'l'll.ke CJ!u i .l.~gU"~J)okes:. pl)]:~s.bthe a:rU(>I.es tinuJ~

with ~linllJar:r~hl te!'!i)wd€t ..The s;keteh S F L O W S how to B u s p e n d . tbear-

t!(~[(il!'i! In tb~ p~atl~,g l)~¥~l, ItnC~lImnhJi~9

are n!!l1!>Il,wb~ah. ts :I ldv·.!~ed•. be ~ure ·t;o~!m

nect theiP'OS!t~'!if() ' ,(fJr~d )'h~rmina] 1 tQ tb,

,t.!!~tj,!_I!'!".,P~~~i,.;.illlll mil ... !crN~"al'lll..jn_M,dl!'rild' •• An;, Wu1inl' i i l l A,fC(lkllll;., e"tz~N' l!.Iiitll!LlH!qllllr:.T:/I~t!!O!t.,,~4 w:ithGI'~!!tii'!~lI,II!" C,oPPilI!"P:OIlia'4'r:"A:I' t- . l!!" WlIi",h EEc!c'N~lgt.[ni" I. II' .S ' lrr lpr!ol: P'II\IICUIl

EL , E C , - , ' , - T R , C , ' , O , i P , - , < L A " , T tN , ' " , G , !, , 0 , i € , , " ,w,o,od, pla"st,e'l", l' th - -

,- easts, ..ea" . e' l : '! , po:roellaifit POU~ty'l tex-t i e s~pbs . t ic tltalerials and , !C J,iJhe rnon,~

co:tJid:Urctar,s~s:8 ~iim:p]!.E!matt~r 'WhE!f : l Itlhem etho d s ~ained in, &:I i s :a r i . i :c l . ea rce used.

F:luw@r~ inseets"l~ves andlthe llke eanakobe melta i l iz .ed . Obj,~ts o f the la ;J l te 'l"

t ,yJ)e, when p]!at~dwith,gold, silVIeI' OEan ..other ~uit<lbt~ m~~l, areeasU,Y fashioned,~n;toll'o'V~lU~sand, p:~eoesaf jewehy , o r 1"81''::Il:aturnl ,des[gn.P,re:parlng- Ob:iedsf:or ,:m.ed~fm8':

M'aleI'l~ls 1Ithal:<I,lleJPoro~a!nd tille!lle1orewould. a~S(i'rb e[.ecb;.opI~.ti~g solititiof:!jmustbe seaIed,ibef'O:re i li b .e r r S W ' £ < l ic e . $ wJiI[ een-,diu(lt, etec:Ricit~'. which. is nec:e.s~&J~' : ro r

~ootroplliating. F;or(Jpen. . ; ID 'Ol !~D!~do' r Jl)Q-

rous;ml;! ,w.!t ' . raisj• the de 'm ' J i , edob jed is mstJ leai ted wit[ ,_ m . el te d , : p!IIl 'a :ffm j' h~al ! :ed. t !

,250~ F.,!plle£~~blyby complete immer-

sion. until all tn.ce ofb1l1b61e'~ :£rom. thep!(U'e~has ()eQ~ [.{!!'g<eobjects, whj~

ca:nD :o t b e co mp Jeh'lly .im m e:r .s ec l!, , 9 J r e JI!liin~edwi:1h the· melted p'a:h'a&a~d if poss~,b!

the object ,s!hQwdb~h~~tedto 250'1;)F. Ine it n@ : r' c a~ e ,e :x :c e~ s i P ! . l ! : r a : f i i n , s ! hO ' i l J l d , 'b e re -mov,~daft~I: S'ea'Jin:ghas been. , e o :mp l e t ed .: So :m . e t imes 1 ! h i s can b e: ,d oOne by p 1 aytn,g a

bJ.,gVi!'W~ch,8ame Hgh't']y o!v~;t tf.l~, ,@ b~ j~stBl I ' t i rJg at the top aDd gradually workingdown. Theflame,ml1~~ he l k e p tm . ov .mg ,W:h: i l e the o 1 b je ct is : still h ot, . s lU :p lu s 'pMafiin. is wiped of f 'with a :p ]iE le e, 0 '£ ID: i .n:~lcloth. This Is particulady im.p~tan~,whenthe ' w ,o l 'k ,(lOD. ta i t : l ! s : r u : . e TIl in@s which

might be obJiten.tC!:d 'b y a film oipar,u£i'll.When the blowtorch. :met-hodl is not~,d.\d6;lMe, exce'sspil1l:'affin must bescr.iilped oBIury 't:arefully.

O ~p lr l t~n_ g fb e W a ",",c!imurf:aCle~ 'Thes u : rmee ~,fiextbru~hed with ,gl·apbU,

of the variety used by eJedf'-atype:rs.

AiLe: [ ' covering th e s u :rf~ C !(l!th e surplus

.f.i!<WiB8. F~~lw~~~.l'n~lIl'"tlll , and S i \ I J l r ! 1 : I l 1 I " , D e Ji ca !t ~ A , ~ t, 1 'c I. '~ !l ,. A : 1 " 4 ! iIfrr'llt ,~rJlllJ'!!'d in D;,r~to! ;~ ' S ! I ! 1 , ~ W [.!I';~(i1~CT"'ftllill rlll:f~I!l;iE!,.··Nr,t!'llh~

S'g~!.ifi'~".;:FiI'ill~!!J".tJI~J;' J i . C l ! ' P " " ' ' ' W ' ' ' ,~i!! .Ry.tJI·tgl! i l '~iI i i , - ,s l!J,~"" ' ! i ! i ' ! :'G!!~. :~{!j.f':r'j}dil.l~eC".jjjJ~t'l_ii8' ,:!i'~rJa~~.f.(}i' ,E:ki!tr ..pig~'~!,!,~

grtlpl1lte is wiped 0:1, the work is ,~.i.ther

hl1mJe~.sedEo ! ; a few seconds in" or bru shedwilli, a weill-;s~ln:ed S ! Q ) l u t : i a r . l mede by ad,d-mg the ,~~megr ,ad .eQfg!t '~phLite i ' : 2 lbs . , t< !

w,ater. 19a1. ,<I!nd the w'O][ 'k .i$ washed m .~ifig water to ) i( 'em,OY·e ~he eX:Cl;!ss

g r,a ph it 1e .. T he g r,a ph i~ e~ s,Q r n ut ru o n t!l"eat.l:t'l!e'ni,~greatly a[dspla.tcing :ani! .hM been foun.dtogive far' beUe:l' l''esu]ib;:ilianthe d l : r . .dut~in,g m~thod alone,

Agooa . g [ O T l I d @ offute,j copper-bronmpawrlel' .may 'be used . m . . pI! l Ice of fu~

g!'aphi~€:. It :should be shaken. upMthlacquer 'th~nnel' a n a 3Howed t L ( ) l ~t l~~Jl!d .dry,<3ifiel: ' PQ~_Qg o ff the so lv ent in om er'to :removethe(grea:se, wmch]nVal'~8b],y

coats eacllp<u:ticle Q 1 f i:he metal PO'W-

der, If th.~sis overlooked, bronze pow-del's "!villnot give Nl'l'u]l:;s as g Q 9 d ;;:I~

grOliphlte, Wi~h ,clea:nbron~e [JQ,w,der',

plating wil l . 'be speeded g'fe~dy beoai,tse

m eta l p O '( 'i, ld e ,l ' is ~fal' beUe : r ,cmld.illdor

o : f ,electricity than gri:'i.phi:te.. lIJ ~ith.el·

tbe grapl~it~ solution or. . a b r O i n t Z - i e sclu-

ban. is .KA::pt onha11.d Jot use as, needed,

waterlnml;Sltbe added ' t o , repru~etha'twhlchis Lost by e va: pW ' :, aJUau. ,A_Re r .<li.few we:e:

o:fliJs:e~the sol l1 .J1 . t io . lU~hou1d b e ru Iow edSietne~~llid fu~ W;[ I ; , tm; pou - r e d oi ap :d rp]:~ed withfl'€$h wate[']n o:rile 'l" tQrem o v e imputl,t.ieswhlc.h w m o o lle et d ,l il rthe d i:p p firig p ]j@C ~. .

P.I.8t~ng wiith.Co,ppel": Re,g~dme'Ss. 1 0 : £ t

final me/tam whi.c .b . . ~ : sto tb e p la : t e d . Io:nto ' t

job~ i tm.us~fuSi l \b~ COp'!lI l i lrp],ated, Aothell: metal maytille'l1 be' plated olVer t

us

A( t i !1 IO 'C"!I l . r i ! l~· lin ,.tI',t';li:f8' U!itlii ,(jil'lIpkilto!! or C~p~,,,.B>I\ I l1 I \ IA! P"iItd1."•.If , 1 5 ' Imm.~J!'lIld'iiIJth~ CilPPl!l'~'ilti""

B~~ •.(:'Onltlktd !lit s'hGWI;I .in. ithjj, A,IJ,,1,j8i'lld~Ji"d~

I C O p : p e 1 7 . m it :lis very important to a.void

touching i I l ' b .e work with. thebare hands" er~ttirl!g it even. s'li;ghdy dirty or , o i l y · " lbe.",

Lore or during the process of piat i11 ,g . ' i l l ' . h e '

jo'lfI, is wU -e d . 'u p ;; ,tha t ]S~ cenneeted :toipi1e(;f:lli,

, o f c li . . £a :. n c :c rp rp e 4 r WiI'€ f(l'I'th~ dU<'lI lptt t [ ipo:seof s:u:sllending the ~ob Ill. ~lhe plf l t ing: tankand . to c on du c t ,e ]ech '1d~Y ' ' I I lo ,f ;ne p repa l ' \ed~ i--C~~ -. T,t,-I)ssibl _ -; · e K ] , . • . ~ ' L", •.~,U1Ck' ;C!e .gP_'!S!:>.. e , a sm'L p~ece or ~,O liSS .

to which, a m o n , 8 l : wire is soMel!:~d~~s,elO!imp~dto 'ilie worrk S iO tha~ it m9Jk!~ .good. ele{':tl'i-

cal 'e'Ontaet. The: bra:ss pii.ece I I . 1 . . a ' Y ' lOe o;id-

CiQ~pc!"J;lI!ll.t·illie' Slidil,r,[l"il 1..· M,!l)tfi!1 , l I i l I ' MiiJii~1r CQ,iillP

Sui!p:i'j,~en W;got ., ,_d 1 " h . i ! J I I ! A,d.lf¥ :Sii!.p~l!'! Ad

'Wl i "€ lS , in whl¢h U; ,~~ 'be shif~ed ", ;bou

easily to eliminail;em<ll'k$ tha.t WlOiiJId

hit i f the w.ire-s were' k~t[n the sa'!'ne10'cation. 'l'1n.'ee coppet. mds I U ' ! . ' : ! Iald , ac ros

:8!gl~!SsplaJtingtank. The '~Ienel' :rod,~,o:nn .ec ted . to the ~egO \r tiv \~ 1~rminal £lithei b i 8 1 . t t e T Y . j ' ,~s:1.lS!i!:dto suspencli 'th.e work i

t he : s: o :[ u ti o !l 1 J. .L !l I! l' g~ s .heet s , o J f CO'PPC'l'<lIr@sl!l::;pend€d hom the ou t s i@;e rods, Fo r r ,[!O,eIpla~in:g~ the : sorhl t ion is made by d'i, i l lo lvlng CgPP~ su lp hate . 21 o a, in.watet1 gal T'o thi:! 'l . 1 i S acdded ~UUCfU$~y, w'hiistir: l1'~n;g" reo: -ocentc . f ' a ted ,sulp.hlll~lc <.Ield., 6J'0 . . . . A U CQ !1 ;nect~OI l lS i , i' I~e m ad eb efo rce il iwOlrk is suspended ' i :nt .ho~ 1:l( l1ii, l iH9n. lEfth

WOflt :is iSusPmded i:nthe soJuHonwhilethe currant :is oft, the :l'esmtsm.aybe un

s a t' i: s £t I! ct o :r -y . Th e :rl leo!:ltarl:. is : adJl1~ted ~

that 1!;h0 vQ.]bn~~:r.~ds 5 volts. "rbis s o d

Justment ismaintairuedfo:r about 5 : min<lIiterwm[!h the rheostat. 1$ a;g~i[IL :ad~U:il le

u nr tiil the· m ef:e rr ,ead i5 ail l(1 J,u tPh 'ilo ltc5 .

'T he wO '. l!:ks ho u ld b e wspected hom, t imt. o tim.e., '':roo high. a v@ l~<! I:g :ewil l . cause thp 'le :.te ~~b e d aJ['K 'in. (';oh;lr, wh[J.e: tlQolowvoltage-wiU no~.only s~O'wdown the wor

h u : ~ m ! l J k e : i I l h e : p l a t e e (il'y~mUine 1 L ' ! l J . t h e l f 'tha: s rnoo· th . , The j jded voltage to use Is thhi,gbest value which w:illl gives bl ' igh: rcBddish. pla.te.When. mung the work f:fiQthe tank~ do not. turn 'the ~onef.lto:ff.. rTCQPp~p,li!l:t~ willi l1!ot <liJ!lrp~ar a : J I (I'ii'~rth~job B it the .same time,but 'wID :start at on'~l'mo~e S P ( j i t s : and spread until [email protected],u~the ,e:n't~re, s~ .n :fae@is pla;t~d:. Changh~g thposUl .o :n 0 :£ the wOIkin the sUn.:g wU l :spee~QV~.;lge. Fram.30b), 90 min ..wHl be :;r

~.ui ted for f l l}epTI.~. ' bet l Q ico v er the en'ti:mrf~tce}Hg:r.il!.pbi~e·s used. as the cond;ueingm a:tie :r iaL - 1 [£'copper bron7!epowcl.el;

POPULAR MECHANICS

: so ~ !c il l@d o ;x l, d iz ~~ t reO 'l itm a'~ ~ b e . .lQ~e .iimme~.s[ng tbemm. :!the plaJtin~

bath. In t hwsp : l oces s the graphimediSurf~(l~~s:wet~ed with!:!. dilute cop-perpb;~lug: , s o l U ! u o : r u m a d e by .acldj~gan 'eq lc l!a lv o lu m e o f. w,~teI ' to a . sm ~lpor ' l : ]o:n of th e crJ!ppeI'p,l<!!tl1l;g : 501<\1 ; -

'd :l on. ab o rv e d e sc d,b ed . Fin@, c l e a : n , .

grea,se-~~¢ .11'00. :DIngSi areth~n

. sp :r .W r .l kW . edv e r t he w~t ~rioo.e andg~tlI;y l)J tu :~h·e d untH the enti_; t·e

:surfacei;s; Cll!mpIete~}' 'coveNd wi~rnxed. copper ph.i1le.

'O X jd i~d . ~C lo pp er .F im sh~ A ft e ll '·p]a. t ing with ~co<pp ,e l l ; ' " the 'Work

sh(lwd beUINh:t.~~!'to u ched w ID th i l i i !

: !l o ft -w . i: re s c ra b ch tJ~. This mti s tbe done cau:t],ous!ye:s the :p1a~e .iSi

thin. If an oocid l ized-cQPpef ' f . in i~h isWa:iI1!Ui-

ed, the work isn~xt ~ightlybuff~d wllith aclotjhbuli ,!:l!nd:ri.)uge. It . : 'iho u 'ld then b edeaneil!. in. ill hot be s :o m u ~ ~ o : [1 , ! " :rl~6ed, and·b,rius hed wIth a h ot ,~o,llL lltion of ID l.V 'e l:ofsui~phuI'ilind ,di.s~med.wa~~r~ unic lil t h, e: d.e~

~i.red. ior rue O i l br -own. hasb~en MV4~lQped.

'I'ht'!! wO i l : ' k is . : f i n ~ l 1 , y w ~hed ~ d :!It '. : il .ed ,and

~jjght]y s~l'atoh.~b!r:Ushed ~o 'bring out lrl€h~ighb;l.~fidgtVl1lt,l ..~. final coat ,~f clea·l " m@til! l

~acqu~ m p : r e s e r ve ' i f r n e ' fini:s :h . .Sil lveI '~P1at: i i l l l lg: If .sil~eMt '01' an y oll ie:!'

m ,e t~ al is to b e p laited <CIVil ' l l ' lIib@,ooppe'l'tfhe

work Is tl~,oit:o~ghly w,~5hed af t !e :~r -emova i lfr oo .m the cOl(Jlrperp]:aling SQ .~u t [Qn and left

sw;p~nded underc[ea~ ~tet' ~ntil the

o ther :p .mtin:g 301uHo:n . is re ad ,y £o l'U "s e.m £the oopperplate h! left e".il.po.$edlo ·theei~l'

it win bell:om~ 5 ~:g htly '(»O ~d f;ld . and IthU~w ill.m a:k e U ,dim~tto p~!O!.tcei~b arJi,oithe

Hl,etal.'!he siW.v~-(ly,;l!!frldepl~.ting. s O b , _ t i Q f i

d.e\S¢ri~ 'here .ii!lpaI'HCwlldy efi ,ec:ti '!1. '1e~Ol'

this kind o f w,ork. Three sQ.lU!Uons, rote l!'e~

"U!QPC-. ·W&lr. Gldd·P'lfiit,t,. th ,s(i!~NM!f A~ ';~

<rtU!'ii!I<;i!'.m :r·~m"r\gf!lrn.in: ,g W'~iff B"".I\II:.If'lAfbr wlt,,1I i I!~ lit~ . ~ ~ r o ; J , " , , , " , P . r ~ ~ 4 i .l~"1Jtu~.IJ~".

It 1 : 8 P"'_il' . I i i : ! 1'1i~' Sl{~"'II!i '" '~Bt,rlb'" S,,,.I'uf·ionl

me:rcm1~nd then ~tis i~m~di:a'te]y S~

pend..ed :~nthe seeend 0'1' !lo,~callied ~' .s l . \ :

~~:lu tion m~de by diSiSiOIDvlng oo d ihllt \ C

~id@ ,. 8 'OIZ. (S 6 tQ B 8% p 'li.U 'e ) 1 . , . SHV1~' ,~

mdJe , % . o r z . " and . c aJlu sb ~ :S(lda~ V 4 '(l~,

wa. te r . , : t galTM~ .5 0 b J!t $o na s w e ll . ,~ SQ t he :r ~ c(l:n:ta

:Lng cya~did~sa:t'e¢ x,t lt 'e m ~l yp o .[s o ~! ..QU ·

mU$t b e : hand led . w i'th grea.t cal!'e:.rrh~s ' tJ .o:ui ldbe used.bl . i i I . w,~n venWat~d ro>

,~ndrlear~n Qpen.window,. Un.der no CO

d,mons :must aoid at ,ooP:[:u~r. s , u J . p ] m ' , t e p . W

150 POPULAR MECHANICS

.I!I:rri~~,Q'!~nt f,~"!G(!'d Gl:td ' S:i',Ii\I!'~~'t';zliw2[; ,M IC" i i7J'U\"tile: .P Jjd~j'j:r S .. !'.. ~&iiiill[i,.A.l"!go!'~1'Olrl.!iI'V,gU'olI.\ I'OI &4<ui~'il-

.l'HllI'n;f.:!l AIr! l ' D:iilti~J'~'l'It . .

till the solutlon, The l'hM~tat should, headju:5liJed care,fuJlyuntiJ. ihe' v,o'ltmete:rl ' \eacl!~abo~t lvl~lt.G o ]d -P .Ia!U lng ~ Y e lJ .Q : \v g Q ].d plate is p:ro-

d .u c;e d ,o v er > C Q :p p e'~ wi.th, ;[I, s :Q lutio!lllnade! by

dissolving Slod~lIm~anide 1(96,-$,% pure).] . oz : . ,~pO '~s sh lmg:a] .d cyaDide! ~ . o z . , . a:ndcaustic pota5h,% ,OZ" , in. w,a:teT~ 1 gal. Gold

f'o:j]js:l!lsiEd fo~a:nodei!l a : od . the .rheostat isadijU!sied until ,the 'Voltme:te.]:' f'ea&' 21h,

volts. This~olutioo. wID W(}t'lk: b@'sti~bpt

heated to ~t-em~€ratU"r~ o f llUD ,''lF . Greengold plaifte is produced with 3,~(illl1ti(jn

maGi e by d i s .~o !v tng sodi' l. fm cya .nJde { o o -98% PUN-), l~ o z;. ."ca ru sUc potam, % : oz;. !and.gr.een gGtd . cya r u dec , 1 oz." in wat~1 1g~ m , t i s : ~~d Mex.~~~t!i~d. ~OiryellQlw : go !d

'bel' :glgves,t:o :pro~ect yornr.,~e.iM·g~t en-- excep~,!. that the t - empe: r :a tu re ~(I,nMbe

tr<m,CIG! a f 'th.e po~it:l!through euts Oi~ ski:n9~o ,F. an.dth,e vol,ta~i AAoulldbe alUusted

abr9S'cion~. Th~se solutions are used. daJ i~y ltc, 3 voilts. Othe:rm@Ws sue]] as :nicl!mlwit'h.Q'ut :m~sh.apjaJnd. .i l tIie .rule-Sg'l~<lind ,e:m:omium lnaiY be :p :D.a~ed O''ilie:l: ' ,the

ne:leare fallowed,. they aWE l p er f~U"'y s af-e . leoppe-r· by~ing :standard plating s o , l u t i o : ! ) s ,The sU 'ik :e ,s o lu Uo n ~su s. '& >d.in a Cl'!'Ulpl<d- such~s harveMe-n exp~ai:ned ii1!pad i s s ue smg ta nk . aJ n.d Ic :o :nne .c ;t ed a s ~gwn i : rh ,()·n.e .o : r Pbpu]a1i7 :Memiu r l c - s Magazmls- .o~'the dr,~wm.g~~Sheet'S of stcelarrosl!is,..P,latiog Leatbtlft t'fextilas 8md P l iasD .cS j

J.:;I€ 't1!ded..rom th~ pos~.t iV'e rods. 'rheiob is Leathe-t~ te'xtHes,p,li!.<lIi.:lltlc.,s,as w~U as

'Wired to thl t l : 'center ,orne'gl'lJuve ro d an.d dose-gl.a~ned. matel:.iabwhich d o . no t ab -immersed intb.'e solutwn. vt.ith tbe Clil.t,~e:!l.t ~r'b m~stl.lre~wly., ean be ~ooled 'with,on ,:vUhout a r.heootat J i ' : l 1 l 1 a few seconds , t i l . ag,ood gmdliil of s:V!ill:'vall:,n~sh .01 " With~V~~ OQa:ti:ng 'will (;omptete1y ()Ov~:r i , t . It W:!lJ.te!l"~:resl;!ltan~ deu :lacquer. Rig1d adi-

is then. r-em .ov ed . Hnd imnu~dia:telytrat1:s- e le s } M~e fb e jr ~ ,g '1 l ho : !: ''O 'U !ghJ ya sh ed ·wit:hfel ' r :ed '1 ;0 t he , : !5 i lv e : ][ '~ ii 'l aing . so lu t io .n : m ! i l! . d . t i' a1.Qo~olli,toremolV~a:m teaeea o f g ~e ~ se '> a ,i'@by dI5soIv . ing· sodium cya:n~de ('96-198% d i p p e d m~o~,or p'8:i~:t.ed 'wi th, Varnish.(l,r

,tol"-!d.~Ii<" ,A"t(;efes A~iI!!iW,ulill!!'.d' I f l l !A. i ' l IN:!hmJ l>i!I~i"~P~~,"~I'.IiI.e. ,o! l . . . r~~i:r!~",dB' !l'n:d .D'eiI\Nf.t:Il ' '()fI.~ICt,5B'I!'Jn,.:B:iI, ':~\Nd' ; t " , .:u)'.d'''''~n $Jg~phid..' belll'!'.! £1.~t!I"pr..Hni'

POPULAR MECHANICS

~s .applied U[lno::rmly.. 'When. the varnishha~;<Iried. tacky finely g!l:'Citmd~~.phi~~ is

dusmd on every :parl to be plated,. -CQPP~~powder may be u:sed .in. place of graphite.

Mtle ' , l ' '~!Iili;trea.tm~lW,t'ryou ean p oo c~@ d w Hh

pllati~g as already ~&cl"ibed.- JA a \l lM .,. FlolWr'S mild. Inse :C itS : L eav ~'S ~

fiowers" mseetsand other ,de.licate !o~ie[ltsw!ll.oo~ma)t'ki:ngs nu;~st be p:r@!'ii@rv'ed in th e

fu1a1 p:~a. te with marc el 9 !~c .u : r .a .( ly : t Jhan i s pes ..

s~hlewiththe graphlt~ or metal-:!pow&t·m.ethods , s i l lould be ch.emi'~oilly t rea ted. tot ' i end~~th '€moonc lu i l : t i r l ig" This~s d .one: ' [by

:Jlrs.t diippilll:8 the object In a dilute soh):-,t~Qt!. of silver 10lc~u,e1"and allo,wing the

thin. f i lm. to dry 1 t i l l . O : ! l : ' o u g h l i y . Whe;n dry~th e

]oQ.:~snex~ dippecl!,itli~oa ooill.uUonmade bycli~Qh,dngsHve'~ nih:at~,~ Q7;" in wiliWt~1 pin.t. 'I'h~ obj,~t m o w d , be left in.~bis

solu.t1onun:til its surface i s thoro 'u ' ! l1 :h lyweU~d. Tbe we! ]'0:0 is ·then s,uspendied ]nahottD!e in the oo~ltom of which ther.e

show d . ~ a. f'€w h.u :np .s o f i[f()npyrit!!l!S.

Th@se should. be 'e\lvered with wa:tel'~ towh[ch is added a few drops o~:h:y ,e; rochlo-rleaeid jus~ be[ol1e file oCljl!limt is :su~pended

in::;[detne bo t t 1e J but abQ'v€:thewat~r.

Hydrogen su]pmde wi]]! be generated i i i ' l lthe b ot l: l le a : n r i l l - t his I 'e ~ cil ;s , ch e-m ]c al ly w~thsilver :!lUl"a~e~Q f:atm, silver .sulph~d.e~ :allit l ls ol :u b le .s ub s tance w hlc : l 'J i. ~ a . :falrly good~oDdUG~Q·rQfem~tri.c-ity.. Whmtb~ , e o O l l t " -

in.g· o f sulphid.e is complete., the obj.e<:tma :ybe copp,~~a.ted~n.d then ~_mshed,with.

alliY {t~!hi@rl!S:ived!.plate.m.enus1n.~tJfie·sullpMd~ p~O(l~~ it is w@ i l l ! to WOil'k. alllt~

doors as th@g'as is evil smellin;: ,and is

so mew hat :p o~o n.(JIu !s if t o o ; f fi lu c h . ' i s : inhaHd.

Ue~bi~]~m; <'l ind

'Q,thers will find:many U$e~fQ]!'thl~

nesf o r ~~De:wd!riV-ers, w hi G II 1110Ld s

:Hat to ¢al'TJr '~~5Hyin the p o'e k'et.

Aft~ the steel hits

h~.vebeen. gr -Quf idto .s .h . .ap e and

I

W!ll!lPrXS.;fP".~!" Win NG t rial" R~~,e~4I l r o . n ; l ' ·fhE.dp:$ ,J E';nd~ ( ) f ~ ~ AnR(i!.!B.'''~iiiJjd·wil~h FH~

When Wl'a.pp~n:gpap.er is sooIedtdamp-'

ness often (:l:IillS~ the layers . to S ' t . 1 c k ' t o m

g e th er 1 .l !t ;t he '¢ .r Jic h SiOthat the pa . p~ rw~ . swhen um:oDled. and. It'.ag:ged ,ed! .gesreswtt .T ,Q avo . i d . l l i i : ' \ l " o ne me f lC ' h ;) :t o r !; :o u g 'h~~ th eends o : f e~.ch, ton 'Wiith a rasp oJr:ooaI"S

file: ,to :s ep ara te th~ l a: ye 'l 'i ii b e fO l 'l E !: p l 8i cingthe paper ina, rack.

Ben61 Holde~ , o f ' Ctu'rngmed Cudhari.ShMdsShJrJ; ami Saves Poc'bt

'1 '0 ' CM. : r -y a 1 1 1 1 J 1m : -

her of p.eficil~. a: r I ic l l

pens in hb " sh irtpocket, n sruppingderk ~!S,eiSthiiS

bolder,whlch h::apiece of co:rrugat-ed cal'dboar-d.c u·tand. £Qldedto theshape shown. Itn.ot only ~aves

~<at on. the pock-e t_ 1 1 1 J I [ alii t h , e hack

CtNH\r.CJ'}l~i GenouJ 1!1.:d'i~ Cl,1iii"~nl~i

T" " .[].r~'O't;"o o~ . " . " ~~,11!! ~~~r.!!l~"'n 1110 'L< 'Yb}' "a;~1!: ~" ,, "" 'L ! ;'L .t l ll ; {<if ,,"!;l1~g'r~

,Small BatterySUPP'LIESA xv boy who h~:iO

£l.. a!);Mhl[)itlia~r.g-. -- er a:f~he "t,lln-

g;!r' ~)'pe in bis homecan d o pr.actlc:al nicltel~;uill!g r~~UD . arp~of-I~" ElCJlGlIlIlen~~rs, too,s lum l !E b e . it 1 .t cr e. st td r nt hi s e l e ct r -o c b em i c :l -lprOl;J!~s. , ' 1 ! . . ' i p i ! o J : b l l y nsirl ;

, i : m ! ] J I [ ) y ! > IIviil~iJ;lImtube, T I:m w or k h.lr nc cllou t i~ W ~1A 1 :n d~ rd . (!Gmme.m~ l l !1 !. 1: J! Iit }'.To ~!j nickel p l~ ti. D i! l' a ni 1' I D il I5 l ItlU'e a

seu eee 'o f W'\1,< V'lllu~,mrud;: ; l1J l : t l . : l1 i l , ' l . ' l c e o

trio; PG"" '~r " ,nw!iJ o:r)ilD'J ruJ~:!.! l !~~l: l ie~.~salits - 1 1 1 m : i1 'i l :ke l e,; ],st~l ' Ig :o, C i l . 1 k : d , ; I I 1 0 0 e 9 , -

'y,'illich C i l i ! : l be "bllllinc.d hom dculers iUI

, ~~ r n]~ 9~ il 1: i:swpplks.Th~ baltery ~bng-er h J l r r u : s b l E ~ l ite d ire Cct c urre l1 t : ' I t ~h ePNtm ' v olta. t le { ,ro ~ the . a lt£m atin!; ["IlI-

l 'm t lHIII5e ii:lrcuit... '\n ,old b -aU ery b OJi:, ,1

: s :r w J ! ! c l! . .o Ji' w u oo en ie C re !l tl l t~b, o r :lPe ar th enw ar e r cc k 'f. ',r jl l ~ rv e rOlf ~bl! cllc~-tNl\-tk cell,I1hkl!:lJplb~ r u lu tim l ,1 e eu .r d ln l1 1 b (h~

. irkS[ri!£cUOJl:!o whiU! ~l:co -m i)ll:PY l~.c· ~J. t~and! put i~l l ' ! tb ~ c~]!.. L:J,y' t .W t l ooi.h ~~ros~the ~DiP' (old 'b~rilSl;~1lrtai.l l t 'oQd~ are saris-fi .u:~o~l) aiUd 1 u I t 1 ~ the amlid ; ; :. s (In (IJl~ ruMfile { l b j l ! c . t s : to R : i l ! i pI~~oo 0 0 1 to,!: l 1 U t t ' T . .

S IB . Jl '! llM ~b c. , u ;r t1 d c l; o t i. , t 1 ) . p p e i : , wires . 1ml, see I tlm~ ' l l ie so lu t io l I co" 'er s memo CQQ . T

:o«t ~hc [ . I o s : i t p 1 ; l e 0(+) )i!)! ld from Um 2/'1-'vol l t ilP -( I'm fbl !! bi !oUL"1)' di .. fir ,ge-r· HI ' tbt:

a:nooe rod . , m id tire nega 'Lh'e (-) l;ead tothe (ltlll!~rrod, , B : m o hun 01l th~ ,[UI:reIl'l..

Cha, rger 'CUI~RENT FOR

Nickel PlatingR . 'ROGERS

]J J I] J li! er i. odo f l rr nn ene 'quLlrt~r' ~ . t J o bal f!Jinhllur IJt less, cl!ll~!'lmdliJlg U!pilill th e vutL\-, lt ~e u s ed 3[1}d. I:he :!;tirjj~il:c aren of !ite:par-t ~cJU5, II f m e h~[d! o c o o . t iJ l ,~ · , o l f ni~ke~ wil l

be f 0 - u r u ! ! ~{:c"~Idy p l a I " ' d . (Ill. lh e W@f1l. A' b e : I \ ' } ' . , 1 ( ! J r t S · ' I \ T t : 3 r . i ' r n g . c o a t l n _ ! ! ; : l l S w h i t e ill'

g ril}'-w hib ~ Im d Ihill, mcreIor·e < I. 61n1L l lmotor :mtl dl l t . b . l1ulTlJ1gw h e - . c l :lire m:t;ildlfor gh~in!!lbile ()biec~~~ higb Ilo!l!;h. ~rh:i!l'n!."r ]llaling---thn.t put !lit in n horter time-liils n good g ll n5~ . .. .., ! lou t . buliil ' l ,g, j):!:'O:\·id.~ Ihe ~ o rk : '\!i.ii!" I i r Ig imdly sllllQQ~h.."nieCes to be p lil le tl :& ho ul t: ! be lhor.-,

ull~IiI :r ' serubbed w i . l . i1 ~ 5 1 1 'O l lg wM InJ n. ,~ 'powdi:r illJd wcl l . rinsed, The: I:~~!. hi:u:eif water adheres, lO [lie w ll Dl c- surface; UIi L d : O L ~ , l~ ~oluti~! I / "m rn~~ it g o u o d, r;Q !1t ;!c~ a~d J J satid"dm:y ' P l < t t i , ! ~ · . lo in . " " ,lU Iro L'$u lL The ])o ds shou ld lm r u b b ed ecea-i { )~ : ll Jy w i th s;lIIcl:.J:Klr~r' lQ : if lS~r-c ~ pea--

r~ t ~ o n i [l~L. No l''ilIO D:r1 ,md~ $ E 1 Q y J d til!L=idiJ~ ~ c h I llhc:! ' ; I I I ! I Ja e S Ol UU ll il , .D I1 . f s , I ' I m . q l d

thL~~lou"h tbe ~n~de~

'rlpr,~ .[ue rn~l I j:y ' I . I iiL ' Ig ; :lIbc!!~ !I'I"~.hOhllll

LlilJjt ([Iii b e :i :mpn'YNl ill. "ppe : r r amce : l l ldr fl 3 t! e i :t ni is IL ·Pm I; l! ' ~ 1 1 :r o 1 ll g1 : k k d plat-

lng '-m d!lo JX I:rt ,ilUllJ!O.o-Lill" <lUll b kY 4;]c p:.J.rt!\,

! J. lu l 'I lb i !l !g f ix tl !! re s , l il b lc : -W\lire , door- O lu l! ""ind m ..'

h~rdwil.re., fille loots, blllJlf i . t t i r I i j ' l 8 , filld Illi! llke. [ilb,"~, t~. .er '~ j$ DC UC' l l5DI!1J

wlly i l i . OO) ' ~~Ii1:ml!l' l e a r . i i iellt,ra fim!l~li' by' d\[l i~gp!l: : !t.. i l l r , l l '{or ~erg'bbo:l! Bno :

I le i !: l lb o ! t 'l i ood I .ms : in~ s~coo-DIffl]!i- - T l1 e co or ,g l!t : 'w il ltb!l.1!Ldo, (loutile UIlII.y-k , e tp ing b.aUene5 i f : ! good

" fiLAMIEt'liT

!!lEAT' !>!(i, 'CI'RWI,T

A HOT C;o'T!-IOfli lE', ...... .. .i lf lC u . . y . .. .. .." ' I ; > ' " ' - - . · ! ! l !>.T ' ' f , I :RY-CH"~II lGeR.l O W ' . .. . . t ; U !J .I ; I o f. ! l i 'l . . . . OF~'1lu"'''AR'Tn.a

How do ,you· KNOW,you can't WRITE rH~\.",yDI!I '~"r h~i!I?Ha . .. .~ )'<i~ ;:va alt lEI l l I I 'L ,ed e ve n L 1;" lll: as t

o r t r l l i rung , under UilIfIPIli.f:llt l r i lLds . l l t l :?

O r !Im,,~}'QU b e e n ~Urnl! b i ! ,( :k , ! !, s i~ ie3sy to cl .o - , walti~ fw lIte dia.y to eeme !iiti.IllC when rOil willllLwBkl:liI.nlil.9lll.~1l!l.~glllo: ;I~ctlverY. '"I !l"~:I~lti!er"?

Ii lii~ b~(.j)r(1)1lf5!l i~theD!ili' "f }';)!Jf CI~

imll:, ~·iJll.probablY ;lfC'V" witi' Il-'l'il~. U\\7~JJ:I~~~ 1 ; 0 . , l;i.w d,;~~ •. ~)!;1;Q1~' m~~l 100:m~mE[jgi]I~~~9 mlJ11 b~ d!':ilH2Di1M1, We ,~n .;1 1m !: , ~ ~ 0 J < u J t ' lim~ ,~~ t W I ! : . d~~ C 1il'i'lc wt l t ~ o e b b c : I l : I ! 1 ! J , . '

]'1 ig stld·!!(fi1 · ! J I t l i . ' l :L1 l) '111\11 l O(l :OO. I l I l [ l l . a lII'r

'~mtll m ~ tor 2b~) hll& 'ib~i!n'writ ing :rm ; &

ti_..Th:J!~B W'li}' so Ilflalll}' aulflmi'~ aed W

ers 2jNil11l i f\p' o'~t of the 'Il~,"~gl;oef i)U~

Th~day-to.da)', ru.'«''!'9il~'lI.f ""Tiling-of ga~ri_I\~ iliIlltcriRI ~b!lutwiJicbto wrilc-d\e'l'e:'IQtbl !<jr lal i!i lt. tl ll! !ii ' jJrdCi:!l . '1JI1~ir backgrouIIl 1d t hc iT ~. ..nliidelJ(i:, as D!) th i~ ,1llI~ 1 l I}! l l

1 1 1 0 1 1 . j~ W b ) l 't !1 e N'GT\'1!pgljler D I i li I~ l u :iAmHtca h~· i~ wllitil1l!i' instruttianj~\IImilim1l-cm'j~illiu~aswrjtiJlg-lli~ha~!hat 1135;p:f6IIq~ w fill:jl1}' .SI.l~U;;SIU:l authe

Li!uim ro~rii~ by W.i'hm~g

N~ W S I · . I \l 'E . k [ll~!I!UI~ Uf.";"~n~ is 1;;-" tb. No," ~"~.k C" I ' J o "' J .J <o , , ~. .M . . .

~~ ~~~r 1 -I ' p :p ~ ~""~ ~'I,l ,-" ri t ' l1I ,g i f > ~ ~ ~D , U ' J ' o c , ~LI } \ i J ' I I r o ) ' ! ! l n l if l tl ~ .. " 'f .~G 'k b . y . ~

r'l.17h;~ ~~E'lIi.Ll~"2Iil:.11ll1~rlI~~, jC!i\, irli, if )"mtrr~~t Il't " '(1.1;; 00 !l p:f1'n~ 1l1;lrllfll)l.ll~D d'Ir~(jrI'nlLtngb j · r r i . J f l l l i l , , [ l l . y ~o~r~;::L"dami'L , , "CI ;"d~ ' ,criticO Il" ,L A . .~; r ( l 'l fL '"- . [ I , i ., , , ",·Itiiy. .. .. . ~ [ ...,. ' . 'Po;I" '" i!'I"".i ..,~ c 1 J - < h ; l l i l 1 . h < m J .1 'tS [I[iI!~ 11 !1 c lo r iliis tn tr u.e·t !m . 'l,'mkr:,ymp"ti>i!l"" gu,itbroOi!, ~·"LI w i d l lI"d Ihat't~n,<I,,( "aillo/ tryi"l: 1.. I;f>p¥ l"~'~ q!Il~ .~~ fl t! ~p : i T~ k ~l }'I}[!_ n~~'m! l i! d l y d . ' 'f : 1 0111 ! li l ~",WlI il~ilIi£lj\'~, S l ' l l " i t a ' · OO ' ! . l i l ! sjylil-ooilnYKimp: : : : I !m l':';~H.!n~11.iN!1]lat ,M ! :II tC!:',iU f IA) itw b l d ! lit. ' t l ~ $!!'"cC ~i,g. , d r . l , I l C l [ ) J 1 i 1 i ll }'l l{1

i l' i i" " < 'r c eo il1;J.I;,~ l 'q."LlJ fC>lll l l l lP ~ r c ku .l a ti i • .I I I , " ; ; , , , , 1J~~ol y,oiJ"l t"\~N/~' L .. \\.t-i!j,;~ 171':

!UI'i"~~1.riIl1:t , h - )' f i .J l J u ih : :n J 3 i . s t a ri l! :S .nIJIJut ' l l " i i l l ; ! l l 1 i

"u'l l1l l :!r~an ~1t ! ;o~rc l~Dl ! : . S ;; " e I ll t le too~~I'i, I~~2,; , S i l O . : 1 1 00 ~ 1 0 0 ~r [j];{l~G tb"t (2)0[; "h .•"L!iUI]L";~ 'Of. :iTlalJ~r.i l i '" 'L.ent 1t1~1!1 l i .uJe liCli;:

'i'iT"riitr.--~jLrI"i~il;$,."nJrticl;es;,lie itpu::;ln~. r . f j gE i , tr.::iV

~l'(irt"5p r o : c ! ! > c 1 ; " "'I!I:,~t~!'!Ii!l> ~ i: 0 9' ~ aB " ~ ~ ' i (~ q_ lrl ~1 IO OII l. in : g~I~!J~1 J'aU lln I . . ~ Itd " ip 1"L cl 1l 0 [_

i:ml:~II]~' r",:~ t~~ ~!JrEiefl t,

.l-low yousttw:l

'f]~~~ t ~ l i ~ J . a F r f : ~ ' l ' t : r;~~~Eifh:'r!~Ill~li1~~ ~~ fI" I . - - f i ~ULX fu l , "ril.tin~~1U'lt:t9'1"",l,iim

tiilr.Jm.lh::: jn~im::l. ~ i 1 ti o ;r e - . Il 1 li li i; ln Q t

:J~~g:~'..:t~r~~!1: '1"%'«\\J~~IO(it Am;:rl~1 I;(~t! Df\Ull'dii,-Il.Y,Xt-nl' l"ar.1rLr - - - ~ - - - - - - - - - - - -II N'"",,"~.p.o.II!U'~"~· 0 : 0 ( ' . .. . Jfl'!~!'iCilII Ij'T.'~ 81'<1)0.:1_:)1 ' ., Ne . . . .l 'Qr' .k

~I ~,~ndl ..., !!~!h",,~_. or . -' "U i!mt " ,~, W.;:ti",'I ,~.pt.II..,J~ ~"'~d, ~n;:1 I'IIiflll"1 i ! ! ! r , ~ . . . . , , ~ t i " ""b<oul, "';1~ "II!~ ' r Q ! l ' r'r(iFi~ .M· .~I~ 1m rl~um 8dNt[,i),1""'llo~Wbor.

! ~ ~ i.""".-"""'~...."."~-".,-' 1 - i! iI n . . _ " " ,, _ _ """_r ..""_ ....~""_"""._"""_,

I~ I~ ~lIIh!rl~~ itM_lilj'I,I[I_~iL!I.. N I ' J ~~l5n . . , .

I 'JJJ~: r.o.!lun , Y'N.)L ===

P L YCQIN ISTRUC 'T I IO iNSaves YOI lMON ,EY

Al i~e t m ' C i I [hi l ls tw'O pl!e~,o f f",brr ' ' :~i! le!, IlIIfIE ! !C , t r 'f II l~e r i lc ) e '~ . s l ir i p I.HlJaer ~he tm l : ld j"

not O J 3·ply ~~r,~ But Ql l U I . S. GiQ! !i !I 'Ch·gi~1!! O !$ ' I! !re e P c !ie ~ O!~ t l' le 5 t r .f ) lf l ~e~ , t h i il tyd ' -E I '

i C l l b r i ; c mfld'9 o J '. " !I IE 1 . .. , .'D l Y iflnmlild Sl:!(]~

~'Ii!Il'~N:Q:n~tifl.!~!~!f! mgJ~~~ ri~;1 1 be'it,e.r tire'

- b l1 lil!' '! O ,d le !~ y ,~radi:i'ng~,:bnJ~~c~ , Q ! ! l a

hI6WOlJlts~blol~11 re u!¥= :t<'y !I1J~n,e)',and

gilvc; yo~ I l o m . S ! e r ' I rQub'lecf,f-EIe sBM> i ,Gc .

G.:! I I a:fJ "OUf' 0' 'I h es e # ,e atu Jlt! !5

'DIlle bifl;e lire you buy. • •

" I 'C O jjl i" "" . ·II 'way l[i!rD.u~d ~~~t j''''I~ l j~!i:~~c: ii jd~ i!;i~i:!!i~.1"

;J j ir~p,~. . " " ,.Chili" ,. ..bll llrt i' s~ Ir~d o~ ! ~""ik;!H.'1

If,ulilbl!r' k[1~i1J,

' 2 '- • !lit", ~~p - - ,'H""~.'I .'~ri·" lI1~k"" p""~ibl:".. glrip t:hio1l Ilft!,!!~i'jl!j; C~i!ip:ng. !fi11!"I~iJt~i~~J!i1Jla.

.n:i~;i::-j'j, l e o ' f ~i'lta' 'F;PlIm. rflrn, t o . . , rl"l!1~ "ft' ' '~' Ilirii~l".

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' " , iN~ i, o : !~" ,; ;! ! \\fi~~, tbr '! l! lI ,1;'1I ~, ,:: i.~d I I- I R~C ~ ,I ,~o til~ ,!to ok "'\"~r ~J;~ca l l1@dG ~'\iiII,~I!!J.~" U tlim,~~,j"et 1'135 no (o~~fjl.~ bo[(;/, ,IeJUWm ha:~"~tg ; ~~I ) .i 1cl ! ~1 ,11 . \ li rU !3 b:ilt~i!j];}'':: S,i; lj](!' bY~il1l l 'I)f it IOn!; "."tt~ l l \ '~! .OO, aJ'1l!~nd: u, In ~~t<r

CI l5~ , ~BaD r ,p c tb c 1~' tLD:p o Il tl:i~ p mllt ,"'~ c~~.~el ~~·i'!l!!ful.U l'iru~dllri'l1i!: IJJ. ~t...~: ~~llt!~"so tlii;]ri. tl:!~ '1",~oI" ~JJa(,£ g( Ure i)I,IJCI!l \\lllilb o , OO Vol!rO O I. '

- ,, ' Id Jua t ~fo! .n rh~~2 t i; t t9 I~:E j" ,~~lo!I[ ~nmt~~tr,~~],'5t,-,i];Il~~.~~ Ul{<JLllLfe 1.J!i!n~ ,~ .I'~~lil:l~~,Il,',i"I'W,i~, ~I: tbg;~ ,,~, l i I H ! w i r l l IS I m t 1 1 J I , Q_j1~jjH,A , h r. lg t lt C l !dm f i~ l 1' !- ll ~ ~ , ,1 1 ~ ' win ' i l}]_m~t~l!i~~ to I ) , e , r: : I~l iK lsL t l ll ! l. on !lie glJ,j«L IJntil .t im i! lc po :!r it ~{>\\-; ~~I:i~ ,;}f b ! l c " ' l ' l I l l 1 1 1 l ,~uilljjiW r o n iOC [C ; ]j sc !i II i: ""!!n:~!!!1 11.. . d~Cffi'jEb11iE

tit" r.si~t~irlt(:! oli! t bO ' 1 I 1 .t oSHU: ,\ \! ~~11 ] ;) 1 !a~1m i. l\ 'm '~m~j~gboj~~ j ;t ; ;; 1 < 3 1 I l~ m~r)' ,hl

' LJ! .I l onlv two, I ! i I T i d ~~~I'i:I'I~ '~i!i':t (]OO" of ~ b "fO~~ ! I f the! d~~\Iit, and Mjm;~ ~ ~1!IJ:!1-"i.t by_.i~~b~p:!; f :rum ,Bll~' to two tll 1!1i~ ~lb ~ft C [l b r Lt k ry , w h tj dv e '' ''~ rw ~ ]. ' iL ~ :rE gh t dcpo! - l t1 9 'D b n a iD ~ r lL Iiveu l I R . 1 , 7 > C nn I ! i m I J 1 i C C ( l l ' ~it,~""-e\iJ~j }'<i~ \\;Ifu .~ MI tb au i O O s t .~t~' u reob! l i I i~caW~i : '1 ! ~!!~~",. "O]l dlSLSl t ) ' is J. O

1I!1I11l't!'(';; per E~WII I' !C : !Oll '~ {t~, ~" '~J o!If

9~rr:!C(%~lmlIn'br;r . , l u J , " , : o [ l \ l ~ r !to[lllLhol: n l e h -OOIJ1~ ~1".>1£I!iI!!I¢'!!! 'W",~ c w . 1 1 I'IUlI, CIl:t'1Y more

~0I1 l ~ gil: ~ ,1t!lI!1:».:r ,r;swbtl :J~l I i l ,~,,".Iir"",II~~, 50

s r ~"m blCqu~r>l! ' a ! !i fca~.cr e~r IlGDI; , l 1 1 ! ~ k ~ ~ " "!I~J'U>!ILill!!!"l ~! 'Itl l l .,g diiIJl!'/mt u umb cr :s ~~

t~, 9 !' ' ~~ ~ ! Ji !1 ;~ .r li . H 'yg~ .!j""~...-...il9!~F.I~m lte liir !, ~ '(!U CllI '1 ,IIID taio ~. J r rw .~i ! : r C .. . . , "mlr~ ~ iL;y. LJsi~j1i ! i l" " 1 l D ; O i ii ~ E l ~ ~ ! K ' r ll , i ll ~.~ir:l; {JhcD~' t<r"~ ' ~m1!m"t ~~ ,~!(I~ ~':m~ ,~()~",,; ,;I~d totb!t ~ ~ g D t U \ 1 o C t ! l' lmLT l l iI , o f tll~!)~M~).

'F " ' ] '1 '11; m i l ! l ~ q J! 'S ~ ~ JQ r,IiIM~ !l'!;[ ; J t I U > " ~ ' ", ," f llm t wUlghl'll an ~Jiiooli lmt '~~l iJ '! Isit,U yOl ' l~IL~~nB rullllilll~mr i~ th!~"!;iir~l!Ii~;l'1!l~~~r:d"I"';;i'~~ , ~ [i tl ll T Ig : OO l t ' I i lr i . ;; :J~i l: . aUol\ ' t . tJ~ nUJum to~,~~ l~.- 1:...,.,. . m . V ! ! ! ' 1 _ 0 l , 1 . < 0 ; ; ; . I " " .. , l~wlc! . ._ ' ][ '~~ l " ,~I ll~r

tb~ rui+Oil\ti~ ,,1I"'w~~.t.~ l';¢, d J i ! ' 'I~!fk"~w.iJllil..: th~ dcp~&j.t iI;od, Ull~ 1!l[JJ~~u\"!I! ~lJ~iroll Ib e f!roHC~.t<!. hDl!l1JfQrr!)!ij)~, Al I i l o o t : 1 l ! !

€ J i Ih~' j;1li:r. ~",._:rtl! ,gEl I l , " ¢ 'U I n - l ! " t " . . r ; m . r J o V < ! I'lll!'p lr uU C >lI'D b j~ f v; )r n 'I~A:!~i;ihltio[l. I I Im l 'I"~~b i ! : i"~liUr;~D.~wa:t~. T h o c m dr~ it wilma I i l l [ } : t l : l l . Ifll;~ . c l e p o o i l wa~ bJ :Wut , i l t ! . 1 1 1 l l ~ 1 I 1 i ; _ ~an .R hlgl:l11(io :1~~wl~C!i ft.I~ll~ ....d !il, ~.

~*gt}' o::l.o~k

Otll~f\\'~C, !!1I'.l' 'me t! ii i I l ri liE ih will! prgml>i(1? t~ c~mc ~Il&u'lt. UYiJ~l : hR'1i'1:i :!I bl.llfi~1l: Ill3!~]I~IHl,')'DU. mit gii.\'~ d]~qb , j~( l ;! L bLg l t polis'll that

' '' l' I'~r hi l~:II I" ' II '<; ,;r iif .hHl RI lI~'' II !!~>::., llQ

jjirl"~,millg • , lilt :righl. n",b~" ' ! / . - . • • '\,I(l

gD~ '~n:Iiv~~ !.~-rrll ~n . 1 b " H i c ' .IlI,Wlll!.lJi1I• Ih Ulirll .gg~l[

• '. . . ..y ., •. r~, ,3:!ih"",c;Coom:pi_ Sl'! '' ']~

l>;):jj_!l:i~~~Jltii lL1~O 'I~h~~ m.ilxJ~•100 ~ !, gn 'iK>T.iltl,

d o o' Il lI Iiu~'i I:lu : I IUw'1 , l , : . . . . " . . . -m"ri lhcr<l

" ! I i ! : ~m '. • "!p' """ I~""• '~,,,ro':9 mared£l,,,"'hl;:; t" 'Ih~!!l!'J '(HJ(D, lioot clym~ I~IIII" ~i

l U U ! ' ! 1 , j } ! , ; & f!!~ ~!!'''''!It!1IOD%iI.'. (:hjjmlllon~

~"',,,-~..ml[ 'imm ~""..nI&~It'Goo.eo W>C ' \ ' c ,;I:I'<I't

~@ l t J o . l ' i [ H ! ! k ~I!i"" " '[ !! C • • r~11~!.,'fl"'''''~"1.- , ,~h~~ 1~llrF\''4"!hill:n'l ,•• J "K~lillt ill mil1t'{]~Uitl

~,,"l (!If::;·;:;ur : 1 ' L i . ! !' , . h ~ ~ l ' " a t b l l ~ , 0 , . .1 < , , 1 1!l! '\1 Id J!p ~ck • • lJ~n,1 Y<;!1n'J!~I[ ,m"".i i l t ld

1~~.i1l!141Ulm '" ! .pi1~~'iJ.pj ' l l i:u.~Cl Idl~jrfii !, ~ I~

Uii~~=:il!!!,Cb"'IL!L'j:~~·i:IJ~n!:!lIrnuli.1)i1 fi:nl' ftillY :nlji~

'IM!~, ti i tu,-ugb i' .' ltlolJ (!j tI[Jii~U~1' li'JIl!" ,[I, ~El\ll~l

~c(lgi!li!,m~, •• ""''Ii~!'<-' ! l i I LO ' . ~ . . !.lh<~n;l ''f~~~Iii~ ! ~n~~C? '!:~i ~~ ~l~'.i~, '!! '" fli7il)

.~.WlliY 'Ghllillijlil~:tIJl • • lliiOlll.o:l' wid.MIf i l : r n , • • tiJ;~ (!~~. '. • ...,g'~ •• v o e l l ; ' 1 l i L ' l l

~o@ ' • • wili!i.t C~~ii[1fij!P1:'Oliit~Ug.!!! l i b l s CIlI~'

o ; : t ! i ! 1 ! ! , ' b ~ ,I i ; k ; c 1l,"'1II'1! U~I!![n. 1 l ) I J ' ! ! ~ ; "0 '

,;i1i"i'ilJ m::!' ,!, 'm ,,,? .' • 'W i I ! t r : r i i , ? ' " • ,21

m'!1I,!IiC$, 20..9 S!I;M(IJ.de • •. whoopee"

:I i. D.U'W , ! 1 1 m ,!~>!' ~!"'~ m " ~ ~';I!!(FI!" o wi 1 I l ' i I l I ' I . ! ! ! O ' I 1 . ,A,nill ,ii,iio'l~llIffi' :1 '( !o!>6:i : i1 . fut"

' ! ! ; :h l i ID[ ! to :>.O'" litre ~y:" ~l'ikcl'Wilirelo C H AM P I I D ' NI'" X'~RA ,_ RA,N I~ E O !

wil~ .:J:~,[)i'~~.(:I; ! h ; : r c t (i! n;j<jdm! ,ebil:~m-~um! 1 L L c d

Th.HCALLY cleau work is theI ~rst re~u~remerl,t ill electroplating,;and thisean best be obtained by

:p,tl,t'~ing-all arti,c:ll;<$ :to b ~ plat,ed, through a

:5r5te~~<!t ic c:l~~llling rQ~~i~: t~ .1F.'h'st,.w.~s.h the W'o:d~ in ga:s,oline or car-

bon tetrai.::bloride: to f'emCf\i"e gr.e~s,e apt]

oil A :IJlbdur~ of .equ;a;[p:arts of these tW(1

. s o l ven t s ts eff,~ctive a nd ]: l'l ';l .c tir :a :H y u o n-ilTI!flammaj]h~;. L;l!,cqueTI."'El , lUOVer is -ne,ces-

suy ~f the work to, be plated bas h een fin-ished h!i. that manner, Afi:n,",~s:c:rl tblDlng

w~itJ: I l)ic~n~(l'lapsuds. to which a i sm~na'l[101!.mt .o t \v;xshing" soda has been add~d,i;viJl!'~'m>l;lve the last trace o . fg : r1eas , e a.nd

o m . Thedeanedartk],e

sbotdd be i F ± t ' ! : \ ' l e d

f i rst in bot and HM l n , in, cold water to r~d

~t: el : il , t if1e: ly .of so'np. Sec 0 !]d,i~ the wo

is of ~:ronor steel, an. scale and (lxMI~mub~[lCllmovll;d by pi.ckl .i .ng' i:n a, sulphuri:c

ad d lli,ath. This consis ts IO ~ one paneommercial .sulph uric acid and teniP~rtsOE wa: t e r by vo]u ' Iue . . [10U:l;ltPO!l[" the 'W

te r In ee the a:ci!C li,1 b u tp o u r the ad d b !the \l':ater s]ow]y, Tl~i:s sl'aiou[d be done

a stonewaraereck, Glas s is 1 : ' 1 . 0 1 : sl!1it ;a:bbe[:~llse: conJ l ;de; l " . ( l ) ib [ehe~t i~ .g.eneJtate

whelll the acid is peured intn the wateCast ; l m 1 n s1 1 . 0uld be d.ipped several t . i I i ! l

tlnsing sflJdi. hrusbingb(ltwec:rn~Hps. T

remove .heatv)' oxide !€oafings "1:][0* bra,andc..rJ(r(H~ra ; '~1ITI]~ghtNp~.!;~ eff'ec:tive, Th

WQ rk 5hQ~ld be ' g j u . : i c k r u y dipped intO' t h

SQiUt10Jl" r e~~ lQv~d , and thQ,rQ,yg'hb 'l"i~'!

h:l lH)t and. fhe~l in coldwater': Too lo

a t:~n~e in the b rig -h,t clip 'wi]] >c~u .s ~ d c ;

pitting. A g . OO d . i I b I F r u g E i l l t dIp is made~dd]ng il l ] f u . 'o~ co,mm.e : rc i l l J n,itd.:: aeid. ~ !l ' l _ o z, 0 · 1 . commere : i a lhyd r (H:h io i r i e (mlU

atie) ~ci.d.~o 3 qt. ofwater in a stonewar

CfOC.K. To this ... dd .. a~ow~y2 lb of 'e'otl'!L€'l"c.i;d~u]phl.].Id(: ac:id" AUIDw tQ' cool bf?re ~$;ng'. Cr(H::'Ii::$.,~ot:l.t~:in.]ng the hri.gd~p a:nd the :pi 'cHe s,ohiti!Ol'im.;'J,1~OfiV!i

~entry be s.e! t :ln~he sink wbi1re in us,e,coM water is allawedte ruu into due si\ \11\d te the work i s ~ r ag r es s ]: n: g, .spilleda6w m b~ dHlllt'l'l:d!.and sa:f~b card:e:,clIawaybe

fore it can attaek fhe plunnb~f]g·. Thbright dip wiU give off n itric-oxide fumwnih l hj~[nu.s.e:. Th~$~f ' t! :m,e;s . In:;]!yli),e; r

HI eved bY~'f( l I ] )He!r Y' en l i 1 a t jQn . The ~~'rfaof soldered or bra:;!';ed w'Ofk t!$iI;laUy has

I:UI"fd seale, tor:e'lh~r with ~ ' r'ys t a ru l io r ;edJ b

rax 0fiht,;.. This can. h~ removed by pkk

]]ng thework in 1 go.a] , 0 · £ \Vate r to w hi.c

fua!lb~~n slowly added 1 oz. of: sodiudlchromate and 10 oz.o~ :su]p'h.t!r](: ~c

After the scale has belet!rem(' lv 1e

by th is t re 'a tm e ~t :, t he WQ~'k :mb e bright~clipped, a sp r~ '! i' lQ 1 !~~~ ly d

Secretswith

Copper,

Nieke.•-'"',,,.,.,andC I - - I ~ D ' ·

fiiiied]U,~ly :)lifter its fl(itl.rlQY~d frg,m tbe: b : a t f u i ,

Tbehot\)!'ate:rwm aid in 'fo:rcing themetalt og' lv ,e ' IJp . H 1 I : Y hycho :ge l l~ ,1 t s wh [chi t hasabsorbed. afldiwhkh li\yould eausebrjttle

e]ect]'(i) 'p]a"t'es,. ]J3 :~s ide i l~[ ,}iuir lgwUJ r e su l tif .;:myaddis ,Idt [)n i l :he work."fb e~h]jJd s tep lJj1 de;l[lin.g~s t~,at o f

po1:is h i.F J,g an d bu ffil [ii,g th e £lu"f<'!~e 0 '1 the:workte n:n>tlul1i smoothand ] 1 i J j ~ t reus, Inthe 'CR!N;; of c,astings,itm,ay he ne'Ce5sary

to USI~ a g,r[rtI,difl,g' -whcicl before [h ~ werkis fii:li~sh(ldwitl1 ~li1.r(irabf:3\si.ves. The platerJ.Wtt~;t (h,n: i,[ictOlf l l rhn sC '[f ju s t hO 'W rrI~~Y

g'rad es ,o f: ,ab,aiS,ill!es :a:!"e h:l b e u sed in the

po]: isMrag operaHo~ls. Emery powde'r is

a ' \ , ' a i l < ' J i . I J , ~ ~ in ill! ta . . rgev3.r klty - o f f i ne: l1!ess . ,Por most purposes, N(!I. 1 :20 'clnery is ade-(jIu at .eE o !F the firs t PQ U Shlng . Uthepew-clef isused, it should he :I"~nonto ,a dothb~ffi~~.g ' wbed WhiJ1;h h as b e er J!p r e""'~ Q t !~ bsized whh a " ~o'od ,grade 0 & gi:ue. It ismore cQ.Hveroriet l[ to buy the <I1b.as~vesins t i,ek fo rm (;;t.bras~vlllmlx!IH] with : . l . s1 . ! l l ta . b le

g r e : < ! : , 5 ' e bindeF). hi thh. f o r m they\'ary froul b~r]y eearse, ~uch as No.12i!l,.to '!liery fine, such as No. l~O,'To tls ,e~ the stick ahraslves <lire

b[\Qllg~~t in eentact with a rotatin,g,c'klth bt!ffing ,\,'h~~tTheb¢~[ ~n-

Pitner" ,gr,~d~~of ,a]i':i'~S!Vet'ita)' b e : used :pr,(i-

gr ,e s s iv eb " u ntil the surface has , the de-sired polish. )fa:l~,Y ab r;aslhre's otherth<Lin,eulcry are' a v al1 a.b i!e ~ aadm 051:of themean

be obtained in stick £Gr:I!I1l.. A :m.l.li.lbero£these, ]i:st 'ed in order of 'uene:ss, are em-e ry, tr [p o U,p u I1 1 i.C iC ' , c ro cu s" Hme, and j ew-

,~h~r'l:i'rot!ge. The: ]astis the: fu~e51t and8oft;e~t. l'hei.~lI)!Ijda:nc'e of poHs'hhlg' < J i , n d

b uffinS 'w m ~,e rea lis ed when it : is UI,l.(h~'Isteo d fthat tJle ]l,]at,ed work wHI 'bello.sm(ioth~ii t l i H H 1 . the polished. 'work betoye

t he platiug,After the sur!..

f .a .C IC l lf fin : work

has he e< n.b u ffc eda n d , p -o ]is bed tot he d e '~ ir ,e d fin -i.s h, .1 he fHnl o ii

l l 'cdis;hil : l!g'g ' [lea- i li ,e nmUl i~~tbe

POPULAR MECHANICS

WORK . . 'C iI . !E;AiN~OI~N ,A . S iOL l Jl 'l ( I, ~OF G . i! !SO i l! .l" .I E .

AN() CAReO~1ETAA'tU.JlliR:~Di[

rem.ovecl. Tlds ~sh (lst a.ee 01]:1-pUshed. by eleetre-cleaning; This

i s co !i :r r ii e: d .o u t by hfl11:i:ring t 'hc:wo:rk

irmu eepper or brass rods: in <lin

~~(;lctf1O-c[(l<l!ning s.()[ut1(~n hit a

creek o,r ba:ll::etty Jar. Two rods

must be used. W,orkm~y be hlH!J.g

fllom 'both i'ods, but i f ' " o n . r u t onephilcei: s tQ be deaned~ ,aJlypiece

Q f ~~rap~ea:d, <orkon lU ay be h ru~gbQ t l 1 . the ether :ro d eo eompletethe drc:ui~. The suppo r . t~Hg rod . s areeon-

neeted tn a ~t{lra.~e .ha tte r . : r and rh eostatthFO~g:b ill reversing 8w!:tch"as in Fig. 1.The p : f op ev ~~~an~ug soh1!Houto u se de-]lends upon tbe khldof ~netal of w hkh. the: '''''ork ] ; $ , made. .F'Qt ir~It '0r steel, dls-: s o ]v@ on(l -h .~ l t COl-I! Q £ ly e and a ! I;y~: <! cr t~ !r'£:ill !h\at of good,lau:nd Fy soap ln 1 ga~. ( I f :

walt,e:r. For brass and . !lim[(aiaJliOis~ dis-

solve 4 oz. o~ \\~'asbng'so d:a,. : 2 02, oi trlse-dim1l1pho,spl :a .a t l ! : l~ ol!lfl-!I'lighth of ~ i I i J , < l 1 i ' of

soap and ~, O:Z : . Qlf' Rye in 1 gal. of watle : r .

should. heused as Flot as poss~blQ.. Wh . M D :the proper t l e :aner h<I\~,been :sdected, the

work 5hou[d, be euspeuded In it : aud [herbeostat adjusted llIndla la.ge'l,i'ol~U1M!' ofga:5 isbeing UbemtedfN'w the "VQVk5!:1~'-

pend.ed bon. Due of the reds, Reverse the

~1!J!r: r \~n: t~'\llfl[y :f'flW seeonds .wl th the swi tch.

The WQ rk r~eed bl!! ]eftlIli. the eleetro-cleaner only a fewr1lfi]Jjt!te~.U it con-tains solder, the thne mu s e be v e ry Sh01NI

top'[I~'\;'ent:it s,bCling dis,solved. Removed~e work and rh l ~,e;In. hot and ,cold. wilI.ter.

If ,af t .er t.horo!l"gfu r insing. the: W;l, h>:rMnclsto; form g 1 0 b tl les on the surfaee r; ' l . tll~F

th:Ull1l0W sme ol::l1~dle ,~lea:td:ng isincornplete. h. i l : h i . 6 , case, i ' l : w mh,e found mo st ~il:~isfae~ory ~oscrub the 'l; 1l'o r! kw :ith 1 J ir .l! !l1 yp ow -

d ered li!ri. 'e . Tfu en~ aH e'r riu !'il[ l ,~r .repeat the e]ect:fo . -c]e3 ,I : t[ng opera~

~i!oll.• rul'ld.",fter the workhll,i!; been.~horol1ghJ:yc,[e,uled,. dip it hl the:ac[d or bdght d~p and riuse asbe:fo,re.

OClUBU-I"OLE

~~rn:~ f 1 o : F i -f lE.VE~iSlI~G

r'._liI-~il C.U!R.I1Ii~N T

The ·\w C irk i s f iLO\'V ! ."e,<!.dy~Qr ~t:s t 1 :r st e le c -

tro:r>laH[!l.g bath. ]f the. so ludo~i : s , :~O~

r e ' . 1 ! i · d y . tll!;!'~II,'ork s h o u l d ! be kep~ 5 u , s p ' e ' ! 1 d e d iin dean 'I , 'i 'ate'f ' . This!,;\dmpreven~oxhla-t uon and ac,r; l lnlHlatiQftlo~ dirt~ l~idleF 0:1

wh:iclil ]Snlilloll.stQlpruOlt:itl,g.. Topf;1tlpa:r~

~ good <;hrgmiu.f l1-!)1at i l !1lg ~:5'Qll[j,tiQn.,dii\l-s o , ] . ; , · · e 33 0:;:;. 0& chrotl<iic a ; c i d in il l g a L o f

wneer, Te tElls, solution' add 1~· tl dr.: o,f

eoneentrated s.u~pln1rh,;add., This: selueion~sv'e:rycor ros ive to sklnand organic m<'l : t :~

I:er:. It shauld be kept in : : l : g1:lSiS-SI:(l]>p~red

They ,aT~ ve:ryef'fetthfe a.ml the CIO$~i;s not

high. A Jtbm l,g l1 . d u Js so luHon w ,m p la tetai r r y , , ' \ l e l ~ii.t roem temp erature, . l t W @ rksbettet if it : i s k i ep t at ,1 [ temperat ure Q f

aboa t. 100~' i f ! ' . This "Flay he aceem pl,islred

b j! se tt 'ing the glRlS-s Or' stoneware iP~,( i ,d t igta.!l,t on bleeks o~ wood ina I,<l l 'ger' COI]-

Mdner', such as a p~iIJln''1' h ie h - €llOtlg~water ]~"a,!pt. to surreend h as Sh(I',:'"rl~ ino ne (1,[ the I l,l lt o to g ra [ )h s, T il ill ,11,S[.leru Mycan then he : heated with-o u t : d au g ;e :r o f brr:<I.~a.ge

o r o ,.,,'> er hr il a. titilg. A dl er -

:mLO:I~tet ,ercal1l'be immersed

:in the wate]' :surrounding~hep],ating nnk. The

CiW01'tduIH eOI:~H~'S fromdrue Sof u t l:im,; tllc!'dg,re

~Eej;ta~odes of sheet leader steel are used, These

a re ! l1 ! ll s p,en ( l, t: d EFOtr iJ, l lbeOlvy

brass, 'or COPfH~~:b a is rest-il.lg iii c:r'OS5 rhe p lat ling'

tank and CQ'lniI:H:ded dl-rll!cl::1y to the p Q sit iv e PQ lif;

< 1 ! i d d fumes wh i : c h w IU b e liberat-ed, aad th~ :; > \\l]:ttchis th~n. dosed.1'h,~ r l ] o @ o s t < l l : t i s a:diusted until t h e

'VQl tm.e : te r r~ 3 :. d sa b (11:1t 4 volts.AfU~:ra f e ! i / ! , l s,ec(lnd:s, theeurrentis tu:rn~d off and !the work tlNalll~i.~ ,ed .fo :i[)~at te , UnO ' ]),lah:, h1) .s

[olrnleiCl, it wiH be nece~s;!ry tov.ary the v:ohage up and down UUg

' t;~ i:"e'si:ilt~<'! tn~oht.a imed. $orne, : p < i , ~d enc ,e \,d l l b e req u j'r -ed i he :re~ a;l;

t :h~ t:e~lp;eratul'e. the~~u ' i1iY .o f the !I;:hem -;~a[suncl th.e. ]dnd of wnrkall have Infl~~'~th;;,~ {In '!;he o f ornm,tlon Qii"l he chVO~Uh:lHl]

p1al:e:,

hlic !"i!i: :r to :I1 .v e n1.inu'l:e:s a c:hrOll1lium

p ~t~ ~d eq t! . .. .efc l1 ' IJ.I!l0 s :I : .pu rp~ s , e s can be

deposIted. If d: ' i ' ep la te d o e . s · ~o:tform enthe \WOI1'k di.r:eicdy under th'e ,1;I,lSpMS10n

w:ins.the wires 'mu . s t be shift:ed. so as f.!O~

h),i~1!:e:rf'~:r@. Ifadefectivep~ate is pro-dUll:ed,. it may be q1!Jiic]dy ,s ,tll "lPP ( ld oM byimmers.in.g the w o:rk in d ilu te hydmchlor,k

F l > 1 ' i i i . Z

t.CID~P'~Ofl~iL~(:'lfIIWPLA;rlI>l6 TA.iNf.\

( i Q l ! . .J!5l5 (II!. ( ;F i l IO-C~)

o f t:D 1 e bO l !tte l" Y . AIWU1Cli bar jsplllCJ~d. he-

it\Veem!~he tweanodes. FmNl t ~ ~ : S ba:r, (M "

'c<l.l~hode;,d~G w'OJ:'k 1,5:s.uspencledby mG~Uls,

o f C O [l '~ erW i le s. b iseonnccted to the:

rheo~tat~ wh lcl'lmay be itn o,]([r-.adi.o·-fiJa.-,

nrent rheostat (lj' a iSaJt-w~l,errh~'o~t:at.~nu,:other b~ndifig[;iost of Ute rheestatise O l ' l ! n e c t . e d t o H h : : : n e g - . a r . H v e pols o f t lTI:eih,at~

te:ry U:lrlOugl\t .my kind ,of switch, whk,::h is

handyfo'rtur'~lffl!g off tb,e CUfICetlt whUe:re~.lo"il:'l.g' orinse·ft.~ngw,o,rk. A voilltmefe:r"rca.rl lu!l , l" frem {I to HI vo lts , s fuo u '[d beeon-

700 POPULAR MECHANICS

P ' f o t e o c H o n :ag;a~n:litcorm-.sla,n.. When mechanicald u r.abUitY j. s1 )J!ch as ~5

need ed f!: l 'rgo lf 'du.bs or

tools and d~es,. is de!';h:ed"thlisruet,hod should heg.~,ed , F cr prQ''tcct; in

a,g-aimst ru st :ail d~or theb~st ~.fiish.~underceata otco:ppef a illd nieke~areIle~ess.trv. For deeorarive

p'urpo~e; stee] art idessh auld f~'rsthe iIJ,]a.t,cdw]th

a . heavy coa t of II;O[)[l e'l:',thenwh:Th1 a ru ed ium -heavy p~ate of l;1kke].C h rlQ ro i1 )l;m :u !IIa y then be

p10l1ted over th e tt~cke~intbe saml!,maJ1LIli·er as h I!:~fOFe . To produce the' c :oppc ' r plate, eennee tthe ap·p.a:ril,tl!.~ 'e:x;acdya~ {o,r C n r O m l iL t n i ' l l ,

~ 'NI~ 'ep t that p~ec;e~ (If $hcet cepperare 't obeu,~ed asanodeiS. The: ~ol1;ljt[Qnis thed,ul!g~r'ou!l ~y. 'H!! ide , -c;G,p[ ler ~Q l~ do t ! + It isa. dead]Yf'o,~SOu, and its fumes must nothe [Mha.led. II ,any :abrasions (ixis,t on thehands , w ear ru hb er g lo '!le 's ,w fiilc 1 i1 a ,(n .d Hng

it. It can be absorbed through «:ut\i;,theey@ '. s , o r other tissues i : t:~,erefore p r epa r e

it illa. draft: 1 1 ' 1 1~Lichcarries t:hrehnnes awayfrom Y01!l!an.,[].a:!loid con tac t w~thit. Top tl(J])il::f1e the so lu t ion , d ! l s : i>ohe 1 oz. o f SO~

dlum carbonate In ~.g3lof water, Tn~na ,d! .d!3.~ Oz. Of s od iu m cY < Ii;fl .fd e(p a~s on)

and stir ,,,,ith ;a,$;tick until di;s;sQlv~d.Wel,gh o u t 3 oz; o f cQ Pp e rcyanid ,e (pO ]-

lul.~y until it ,d~sgO~ves" Add.J4 oz .o ,f hY: l?o~and the solut:~on isre:mdy

eo uSG:, It~ ]m (lI,d db e u s ed atmolntemperatjrre, The rheostat should

be a.djil1.s~ed;S,Q thet tfu(l voltmete~r

reads allou t 4 volts, Be su re thuthe 'w,ork 1 S we l l rinsed -before plae-in g l it in this b <l: t~ ;1IJ50 avo : i d 5pm.~

ing add crother .s,a~udo·nsIn thebath, as ehls w 0 1 ! 1 J k l eause the liber-aeien of large qll.an.til:ieso£ hydFO~

c,Y,a.n:ic:. ,a.cid ga~S. A n lmm'e:r:s IQ il.()t~

tillirty tllinutes willpredaeea good plate on the W'Q, rk .

After p'~a~n.g: witfu cop-

per',dnse the work t~.or-

oaghly an.dJn . rcke lph l l ; , e itin . a so [uHonnm .d ,ehy d E S ~

~oh'ing 12 o ' z ; . o f nickel

s.ulp.ha.te, 4 oz .. of nkke~

chlor ine and. 2 O~. of boric

acid in 1 g.at o·iwater, U~'e

sheeu 0f bar~ o·! pureni ,~kel <!$<lnodes. Ad j u s t

the rh~o:stat until ~h'evolt-

meter reads S VQruts. A£l:cfa f~w n1,hlll~es:r;ea.dju~t thei'"h~o,~tat whhou~ , ope l l iag~he

s:witch until thevolt:nlder l"¢ad~ a litt~eless than 2 : volrs, For a heavy plate, Le

POPULAR MECHANICS 701

:ge nU e p re ss ure , ' U S - L n g fine Vienna-~]mepaste on a 50ft muslin blldlingwhed.After the nickel is polished, t.be works b ou l d be rinsed in bot and cold wra te r ,;i!t'ilde]e:l::h'(H;;:leaQ'~(~a~ before '~O reme v>e tlue

po]ishin,g grease, It s.hould then be bll-

tii1,eFsedillt~1,e aeid d: ip and w lns ed again

with hot and colI water, The wQrki~ p,oW

ready for the ChilQJll~l1lll.lJ this is des] !"edo .

Plate o.n the ehromlum as pn~viou:dy de-scribed fer three to four mmutes, Afttlrrinsing. the chromium :may be: polished toill b' r i l l ia l l :1 . t laster with any go,ad gmd.e ofchroni . iu J1H~Q, ]o r : i l lgpash: a~~lied wifh aseft mualin b~m,ng w]~,~d, ChrlQn~hJnl :may

he' ol:l.ffed.i,vdyplated onto , " ' f e l l cleaned eop-

per. Brass" 2 :1 : 1 :1 ( ; : !HH]] silver articles shoil!1Mbe nlekelplated befor.e attempting to plat~t:l'iem with ehromlam. The' ni.ek,e]plate in

these cases should b e ' pnlished 'exacfEy as,for steel,if you intend to do considerable werk

in pJatlng~ standard commercial anodesmay be used.. obtainable at any electro-plad'llg-su:PTlly l \iOl1:;c: l , or homemade sheet-m eta l ano de s '~~ri1 be em :p ;~ . oyed . , C o , t i l v e ' 1 l 1 e i t l J . i t t

hange rs fro m w 'l : iie :hl . fb'eyuesnspel'lded

are Iil:l.ulehom'il. ~elilgths o~ brass t l l m b i o , g o 'ofs.uffi,eie'llt .strength to hoM. the auodes.: To

make it easy toeennect your wiring to'them, dFill and tap' the ends for a small6..J2'machi~le screw as shown, B'oUle la-bels of. paper, which may be 'quiddy 'eatenoffbf <a.dd; can be p'wt'ect,ed by COil tingthe~i o~wHh: 'm(l] 'Nld pa:raffin ..

•

Vil.hen layiugvenee:r b.kks, wire ho o k s~ jke that j l l :u . s t ra .h ,d ' shou ld , be placed O'V~:I:

the studs. "and cemented between t l i l . C l

bricks, , ! ) . f e , i v ' : i i i eii~h row. These hooks'. 0 will bold a

la ege SU i ff3 .ce0 : £ brick ve-ueerlng se-c'llre.\y, 0 lJ n d,'['event ithom IHdliug

away fronr thes : tud .d ing , . ' M O e -

d ~um-h 'I i a v 'Y

'COIlt~tJO\r :iLl!lrt!t 'Carbo)!' ~~~.y PO\l~~, blY Pi.vl;I.:glit t.o A : I l I , I l ; l ! I ! l - f i . l J ! E l o $taaull

Ca,rboy C o n t a : i n i n ; g o Add Swings,o n A n ,g ,le. .Iren Fram e -

Lar,g,e carboys containing acid .• \\ihk}]are rad1.er dangerous to. tipwl:ullltii liningsmaller i:;o'tdf:s, c~n be .safe]y ° lmDd l e d b ypivotitl,g 'tn(!:111 o n a1.~ :angle-i . reln stand as

showa. Lengths of ~-in, rod ariii weldedto ,udal p]at,es. wlllieh are driUed so th.at:theyUC:;i;nbe screwed to the carboy frameand serve as pivots.-R. M.Thomas, Den-veli"~ C o l o .

Eltmiinating Static Eltlctdc~tyin B,clts

Wh ere belts are u sed Hear exp]osive or' l 'dghly .illll'lJilH'!.lahlemater:ial, cautlon i s :

n~Cie'!ii5<i1,ry N) prevent the ,il,Ccun1l.1lli~,at;ion of

s ~a :'t "ic .,d ,e cU i,c :: it y. w h ic h ~ s. g en e:i'il .t ,e 'i1 .by

belt . shppagea .ndo the eentnruoes m;;lJ.kl:ngand. biie,aking of contact hetw(l(!n the beltsand the p t d E e : y : s " Itis ; also genie Fated ! byfriction 'between the belts and the sur-l~olJnding ;~if. To ground ~t one largepowd,er m3 !t 1u fac :t Q r~ r e (l a!i: S thebelts witha graphite SQh.:rt io[!, while another keepsthe belts au toma t iC i l l ] 1y moistened \~'kh 0 !l

sohttltiol:tl. of wat,cr and glycerine in . equa]

r , la !r t !), E : ithe ll ' o f the se ~ o]u Ht)ns m ak es thebelts ceuduet dec:tri,!;:ity and allows i , t : te

CSC<l ip,e

o

t h: roug 'h mac hines p rO i \' l d e d w it hm'lltal p,ulteys . .on wooden pulleys a ba~d!ofcopp(lj' may be attached to the fae and

"~!L"""'''''''

lioaZs"meita~pam and , . m . '~IPplill:l"atl , C ¢ ! ! i ! 1 'beim,praved ~nI t l iPPlH:l l laJl : !C8C1imdproteded I~Clli l l l i lt

1 ! ' 1 ! I r S t ( I !I1id,(ofli ',oSJion ' by p~g filil9 themwi,t'h ~ilil'!ll.

'!h,e II;Iqil i l l,pml!li l l ltp!i!,d ,tihlJmii~tl!l re ql;l ired ,are e m:"to o.iiJji~ lomClihe p,rote5!i ;~5elf i; !I~t!i~lr~;m!p'e

1:1 .Nuf,hu!n' 8ogoctll

Z····•···e PLA,TING of srrtallparts by 'the anY1lllidiedying,metal from undue cerreslon,'. . e l~ ctc .fo .~ yt~ J: :lpl'Oee~ i:sfi~t Q!fi]Y a :shIlple The eledl'Qd~~posH.:i.Qn mefiJhod depositsand -e!lfec~~v e m ethod of 1'us'tfIlt'oo,flng; "M -a o oa.tl .t li,g ;o f zinc ,ol l the mEJ ' b : 1 Jg,UdOil iC!(i !wn:k :hi51~ed., rud.8!ce:s , of steel, bu , t also nlaJk,e :s : an ~ p r oo : r ,3 Jg ains t the ,entry o . f meisture, Zincattl.'aJctive finish 0:0 brass and bro:mle. Tb~ co!a;Ung appH~d~o fitUngs Ol'pa'rls~o be7fne ~Q.a,il:i:ng]~ e*eg[~Uyeffe~t~vE; l : O[lOl't! as- 1U!:!i 'ied!ndoces m3JY be' ve.ry f u i n ~nd ]:i;!llht

~em:bly -o·f,small 'par~ _....,.,.__ ............. ......~--::-~"'!"""'''''''':!'~. The ·tlti!~knessa~ thellequfuringtl1.e is a m e I~OIa~~ng d@p() i5 i~e~d on£Wish. U:se :z~nl;loo~t-, the mtl:tal is l'Ollg:h~ing: 'to br l . ' igJr ten 'U.PI Pl"opo.:r'Hon.~J to- the

model work and }]! t 'o- p]a:ting: ' t ime , th!'li~,ist~ct tools and met<'!Jl dou b U:n,g'tbe iti:m6.tLlngJ of v.~i!;·"~QU;S w m : g~ve appl'QX l~ki:nd!s ml;'hicb~F.e ex.- m 3 .,t e.~y .~w i(le tI le :!losedto the weather. . t h k u ~ n ! f i i :& S .'The vW i n : . : ! e Q i zinc Th(}l.'OIug:t~,1ea ns-

coating; lies in its re-~ng arnd pl·epa!.:'~.tioal.stanee to atmos);; ! of the stl.ff~Qes'o{~heflh.eriJ~ agents. " " M e n t , obdlectt@ be p!~atecl,areinduce !Cor1r'o ~iorg,. jys.t~fii~mp-ot't<mitiE!:S

WhC!!Il~xi)Qsedto ss- 'the plating opel'.:rti!onvere ou11doQ1!:cond~,. Dirt" on ,and grt!l!iiiS

~s,tbe me pla~ ·-be remciv ,oo bying tm.iQs. whi~ ~F g t,be:oih~rects .ingraY~iIl~ime bu:tth ]~ ~ stlxlng o\\~ika!!ll iath.

CLIANING

CA IUSTI 'CSO DA .•••. . .. •. . .. . •••• .. •••••. . .• •••.: az.SODA AS trlll . .. _••..••..... _•.. , .•. " ..•••..3 OZ .

T,RUiODi~U:M P I i1 I ,O S : P 'H A . U . .. • .. . : • • • • . • 2 o · z .W ATE I. 1 0 M AK E , - ." · 1 GA L "

Hec~ .~'O,a' boiling! temper'atullfe, al~d ~tm~

I m e r $ € ! , o b i e ~ t 1 CI~I) '1 5 m h 'l ! . i ! h 1 : : ~

SUtPHUR~!C A.Ci IID ( 7 I to : ~ - - - - . ..- - . . - • .• . . . 1 L I B .

SOD llliJM CHLOR !IDE .••••.•••.....•.. _••3 ; , 0% .

W.'" TER TO, .MAJI< :IL•. .•• .•. .. •. .. .. .•• • ~• •1 GAL a,

C'A~1iIQN-AJtwIiY:l adClrhllilid.i:!I to 1!!i'II'Wiihli'. ii'!, ,, ,a i ll amCl !l ; l.n t :i ;, ·wMI !e· 'IIitli~rin9 , I! ~ w , & r

SODIUM CYAN IID I.E ,(96 -98% ) ....•. 401.

Z 'INC C :V .A iN IDE i 6 OZ.

'CAU·n~.C SODA _ __ "6, OZ .

'COIN .•I I iJ G A R - - - - . . - - - - - 1hOl~.

D , m S , T l il :. L E D WAl lER. i l iO M A K E • • • • . • U GAL.

t1,@ c:~ fi:'OlilIl 9 0 i I J ' 'to; T I l05 O f .

$ila·ca·~[:onno... fig!- 1.•befo l1 l ' miillin,'!I

this boilirli,g soluti.o·n will remo:\,e ~lll dld<Ifill gn;!:OlI:S€i. iScl!.'apeol' wli1'e~hl~m:ht.h.e· ur-f:ace~o remove, aU 100se ma.terialbelol'eplacing in the bath. Aiter imm.ersing 10 tolSminutes in th@;a]l:'aJ:iisolution ~he wo:r.kis remeved and tin_sedin hot wa Wl"~thenliD ,~o:Mw : a b e 1 : . Next, it : 1 . $ placed .warn ;;\(liidbath. 01" pickle.t@ remnve l'USt, andl5ca]e.

Itshould b e l'ememibel~d tJ:ta~ .it ~s essen-'ll;i~lk~' lr~mov~t;hJ~ ~ Oi' oH fllm.fi]'\S,t

be£o : r e piaciDgtbe In the ac id , 'ba!~hi

s t oneW31 'e V l e 'g : s e i . D o :nO l ' t leave :stwll i in.th.@\acid. bfl.t:h too long as the is\ll 'c ,ace wUl be-come pl.u.edLR~mqv'e i . tw .nen the su:r:faoeappe.:n:.s c]e.m, and bil:~ght. 1rr:mmemare: tyuponr>em{livalft,om~hea(!id batJh l'inseth'e\ y, r :J [ 'ki n. co l d r unn ing water.Mo'stobjeC'tl$ have Ollie Ccl'nlOl"@ boles 01'

pt 'Oje>eti .oi1i5 by WhiClh th~y ma;ybea.ttac.ined

to8.

pl.~Bceor No. Hi~ga. ,~op,pel'wh'e. Thelong "pj,stai].~'ofwire ·gff .~rs S o meaJfls ofm.ov.ingtl:!,e o'bject ,e.asily from one ha.tb. 'to

to o om em to o ontac t wi~h a ny ,!)b d le ct .Ity,onmud~.the sw:faoe :a bare .spof m thep~a.t : in.g is l&ely to! "@ 's,u] t" The vessel used.for the plating ,30~1J!tci i .0i Inml!l:'l:the nOll ." 'm.'e-

talli .c , . s1Jlch as a . ghl s so r earth:e]lWal~~jar.Befo'l'fl mhmg any chemiea]s !'cacl the(!~lilL1'tion·not:e~ .Pig. 1. 'TQ p r ep , a: rl ; eleetro-

hrtle 1 1 : \ 0 tbefo:r.mlUl l ia:g, iven in Fi . ,g, .4~ taketh;I,'~@ qt101rrel'~ o f f i. in ev o lume or 'lIii'.a;ter .< ' I in~

! b e a t :00 : a : P : J ? l 'C ( l l " im f l l t ~ l y lD~; deg.F. Tbe!!add the iilodium. cy.anide, When dj~Jvecll~add zinc cY .a ln ide a .no .s ti: l: :' until d:isoolvecl!,The .caustic :sod~,~fid(len ' .1 l stigall'may ·thenib e · ad d ed , and stu:rCldl!.u:a:i[;il diS\ ' i !Dlvea . W' f i -tel' is :finany ajddedto make up the re-quh·~d.'l;'C!,lume,i l l t ;;::h.ou~d[bil;lept]nmmdth9J~ ~h.efo il '.m u laeaJ1 :!!i: fo r a piresm.·ibedvo lume . D(ll'!:t~se ~.fuH g ,a]il O'J !J. ,Oi l ' [ 'Om'". ! l j n ~ l ' , measure of w~telr.,plus.the bulk: 0 . 1 1t he a d d e: d :m , g ;i., o oie :n ts .

i l l : f .You are uSing :metr.ic weigh.ts~ sabstt-rule' 3 1 0 1 grants :for each eunee b l lli.e for-f[I,'U~afid 'use ~% liters, Or 375,[1 culbJccentimeters f i o : ! ' a gaUou,thes@ . f igJUil"eS be-m g sufUdently c](!~ .app~lmatiQ!tIs ..The wl:d:ng "'am ]: 5 shown inF~g. 5,

Almost SirJiY l'b . win .a 'O. l t 'C'Ul, be madeiofwire, or a su[b\Stitu~e m.ay be m~de as inFig,1. This o o 'n s: is ;t s· o f a n o~ bmt,,·~e:rYbD!X. FUI with a :soJ:ution .is-solving as m.ucn ollc :Unary saU as pO& .S 1 .]e [nedld wa:t~\! ' , A fla ir o f m e't~ l pl1lteSis ins@rll i -

ed ~~'.th~ ~]t s~lutiiQn.The ' l ; : lQ5e[!;togethertbJeplabli!l 3M., the hlghel' ' tJ!lev!olta;ge.FO i l ' i i l inod~s . s b:ip !> . o f pw@ shiee tzm. ' c . Fig, .

'6IiWn' hung in the :actdlbafu, If a qUaIlmy'!of w~rk~:'l. · t o h e ,done~lL'Ise·the~<:l$t ~ ! : n J C

sh!~, Th.eratiQ o·f a:!:!ode ; S l ; a ; d a c e to that t ' ! f

ifJll.e!eatbede, wMen. .lstbe obaectbein,gplated, snoldd be ~.ho:u.t L5tg L Opm-atiqg

l teH~pe:ra.tu;t 'e s n o u U d b e f l 1 o : m 90~o l d O lS :d e g . .

(HIii' V'~l~~h.o~ldb~ '~VOl ] [O I ;b~OI ! t ~beb~

b a l· s, ;wh ll !. e t he CUI'i'e-nit clen: l lHy should befmm . 4Qbj 60 am:pe !~e s pel' .s qUQl"~o ot· (i.caI . thode ,surface. - -Af te l' tn f ! : ( lQ ld· .. ; \\ 'a t .e : l·1 l '. ]f . i$ i :l \gbm~.~heeb-

jeet i~ immedia~ely .hungonthe eaUiJDd~l?a~0 .£ Gbe pla:ting~nk~~he CUrll@ l 1 t i I l @ m , g on,and the! r!he()",ta;t~s manipubtedi. \iI.[!tiltb~

p l "Ope J ' v@l t age andami[per a :g~ are rE! :~ch~dF ur he~vy plli~t]ng a half hour is abOl, lthe l'iglllt time, whilefol' thin. plating a fiv!e.m in u ,te imme !D . "s iO i ll will 'be suff idei!J!L Hthed!epQ;S~t j~. hot ~higk ¢n.o~gb~dip illntotlhe ~ka,line ba·thj•rmse in :bot ' l I;vater. ~n in. ,coldwate.I:~,andl."epla,~e.

In S i ny c a se .a cH .e : !. ' l :e r no v a l H~m.Lhe pla:~ingba.th . l 1 : I 1 S e .weUiJr . iwater and d ry t o , p l l e ~

vent ~La: i :nmg! i l !hd. spotting .

ElectJioplating --

An Aid to the Craftsman

H" ' 2 , ; vcu ' c : : v ! : r b i : 1 : 1 l I i at iii .ID§S io

k l l . " , w j~t how ! V . I~l~~ ~ C<ll)r"'~ii!tl~ in p~~ w h~ 'it! 'l iJ .a t y ouh."Ld 'WCl)[!j brass and Iron 5aCW!P

A lUlilW lo t!ii:" 01 d ~:LU ill . l : io g iii i l > .: ; i : ~p~~r fmm '"""Ii~ II",,,,; Iilv .c . ye ll the '

:UJ~WC!X [,0 this, q~~d~J:1 :uul to :r.nanyOlb.t~-t5 'Q f I ! ! ! . . ~.rn]l!lol'n:l tum,

for ,.",s]] wtl,rl; > ' ihc (fulfil. .... iI.d i.n -~'Il",,!Je, I!l!dIh~."'or~~-m1I1~\'e til boH_t:"il!rn~x nLt~r.~.Q]]~~ : S h T . ! . p . ~ 1 I l :t : ;. ~ - . 1I; ]f '

porco]", .. bow!."""y 00 U :sO O '" "loll,,!>la!lh" ~~;:l oopp~r ~ijrt ~[j~ ~lljjoon'~~c'r rn .GM(~e .Fi~~ t,.~Sin~edirlet:t ~1!I"n:nt is". ... ed II I the P 'DQ) " , 0 : 1 i : loct r<>pJa[ i l l~ ,drj' oo[t!;ean 00 used,

Jt ~ bo;;~ 10; , r>~ulr"", the , ,"i~ tfuM ,"I."" .,,",en'Cmt..!. 10m , ~n'l " .1M db.tiUe<l,~'~,l~~'l<>~b"jjj C~ i!1" Ihe dc"nod ~~ll1rn,.rrn.th(!r' I ban ~U~mpt to r.I"!!i..lfel : J ~ r : r t yqUl:-Klt T;b!ll' , . , . r r r J ' ( l i u ~ :i!'lali'llg f i O h . u i ! J : r : l i t~[I

'b e obWlled from d . c a . 1 ' > ifipl~L~~' ~rj e . .' !. 'l ~ r: ;' ! >~pp l ie : i In d d:le r COli>-

"."tx"l.d 'OJ '·~.t 11 Ir:m, :ILIlt!<tbre~·'~]m~ ,[..moll). b,;:l)!!,g I!lJ'l'!lS~;)I:i Q'l'

L . , , ' c :b , P"'c\nLl«. N"",~ 0:1,dOllI~~~i1 ~ 'h ~ ' o o l l . 1 r iO :M ,~ ~ o b t l i l i o _ ( o - d

by ~dilig fi· ,..1I·",J:J,_d " " , j.~"",p<! f !~~h l ~ ·

'~ropl~l:iiIg 00Lh, th~",el"l ;, a,s,1 i l < ) l " O l J 4 ! " h ! " pooli& ll .U. ~~ !!i. tb .""l!..l I01lI( l~p) ;; ; r ' "ire, ,~~II'~k h~l~iIi l: l J o ; hUTIg ~I!'lh~p tp \.il,g ~ ~-

~.m•."'ld.~ d'pped Illto.a,.,h,tj"n

..I h,,! ll'~"n~.~tJiI.r 1M l~. ;;o .u .·!.i~po.osI! !n i 1 1 - 1 1 . zyj' \\"«I~.r).s . ; 'CUb wHb d"an Mil~cr, the" , dip

HO'\ , \T 'the Home 'Worker Can Apply

Special Pinishes to Mehl~

F'n~pu'ing Various Types o

"Vo.rk~ What Soiutions to Us

Dy B))",'ARD Tl:n.,,\'fCUER

" xi d~, ( !J ld . >o : T! I! ;o~ _ , g ! ! lnwith ¥ t .J jt c :r _ Do oct

l(ill~~ Lli. "'<iTHu~l!i.~~~h!l'ld~ ~!er til.,dC : :l Jl ~n g D~ i! :! r: .: l: .l iC i .n .ib ~ b ~ cn e ru e te d ,

1 '" 1~ II, e I a ]'GW " t i , , ,: :M 'ri![J'1;g'r;: 'men'~ U;Si;I' g

drt eells as i t . n ~ tur-r . e : n t seurce, " I . l h ~ c~~..oellt~o ~'9 irom 1J\i;

~i!;iv~ 1+) ' f 'O!e {"~J:!I.:..~Dtl:r tertninnl 0.1l ,:1

tlr.\' ellU) ,JMg lfie;"W r ~ ,i~ the Q : ! . t1 ! : ! :V ~ ~ { ] P

01 the ""o~ ,. io i.b c m ctLll , I" be <IoE"'o i le<i ,whj~~ ls a;lI~ tb" :U:lOi le, Thl~il!. ~unJl:nQe~~d" "r til" platin!: ••nk j 'a the plJl"'l 'J:: 5 iJ "J uL []u . F rn IJ1 th ~ . I l l n o o A : ; the cu rrent

Ilu",. lilruUgb the pLMjJ:ig'rolm'Mj I" thowo rk being ]!l~led, WtLi.dlis (;il!le~ I,,~

""th",1",_Tlie etnsca t .i~p a s .o ; m n g f'fQi[Q t!ib.~a n o d e

to the cai"c~. ruu ... Iho mola] , , , f lh~~."@d~ to ~)l ; 'o t . :; SQ I~don !I,".~ l eu .~ 1 I t ! ! .metal < > 1 ' ,1 l0 pl".t[ng50ltrl'o~ J9 be de""","I.~ ,m the ""tb"de Q, l"ktc 01 ""'Ikh~i!)g Ii!~td: fr(;1'\1 the C -llho ,t. lb ~ eur-~l flcw~ lb.rnuglJ ' L U i i : ! W;ft! ~ th~ ~rw..-Ii••pole ,,! the ·b.ttery, tb .... ,[umpldi.oll.

,'ifje cl'~"u.i~"'f~.pl!tU'\Jl 1 : 0 [ 1 . 1 , 1 : 1 1 1 ol " " " y . ! ! J Jm 0 dEP"'it<1l,~"l! .. n~rwilh".:Ii ... dmruQf,I. to "'.... , In tii. electro-~"i ; : :mrml :ra;I~tirn!4 ' 1 'hu ," ' fQ"CI1pp~ '~t~~-in~r '1 .\ ~ 'LIE ill pure [i!JipllC~' mlJ:lJdfii: .Gm:d lL

C<>J)JJ ' r9<)ru(i(;~,; lo r ~ 'I""T l~lM in!l , " ~1 I~ ·~t

~mtJ" d e t. 1 t (l :J _ ll ,. L i ~ lI rl i o l 'I II n 'I I' 1 1 ';. 11 . ,. .~bl H..1 the mlll •I 'IIfI Ilr tL~ I.ztl"b.

~h l ;t io J 'l , : and . (L, :!ill,' ' 'tf.r.[],[]~dl:'~.mIlil 50 O.·.ch "'~tol,. i \ , i . I ' wlll!;cns ~liU'uM ];;t:n~h'dy separate frnn:jll~!.1:(h 1 i 1 1 1 J , ~ r .

Tbe"llri,,"~ m"w. ! . I I > be <I•.!,,.jlo'l ui" , d i'Il '~ ',m ~ v < IJ !: a~ ;I. C u P PIi: , n ;qImrn a 10 3 .14 ""les; , ,!e ke l. Ir om J

"<>U.; ",,!d. ' . rom : l' I . . s ,',,~!s;,,;~"',!A I~ t~ ."alb; : 1 11<1 pl. tI lJ iUrn, Froii~, , , , I!Ls,

T~J$ '""U"ll"' f"Jl"I~c~i '~n is c.t.~impvrm1Jl fl~L~iJl fnr lhlll·'5i:mpf~r :foph~. Too h lg ·! " " ' "."ll.!I" will mdark, h,,:, ,; Ii, "Ii rtle ,hlIX iS l't , ~ \ ~OOilIrt;git.ti'i.("nt. (Of" the boeic s_bop I !! :I , Iib.O'W

the bollQ~. " r HI;, I. ThJ"" """"vcr~r ,.."y .•mnll j"i>!;,,,,,I,~. Tbn:,,'~ryn rc :: ( J) nDe~Le -d f n 5C:r i~~ nIH) : J j , l&r l t o o ~ 1 : ; > . t i~n~. t t~; l l 1 1 ,t h~ p o o lc l,> ,linu !" ih. unode, A 6""~lt 1l.C.meter mt3'y l i e ! conn~tlLt4 w.llb ~: !,,~r_ tal" .Ii·n.b.i ."cOJ"l the rh"",t~!

~~e "n@rr<lW supply .~ Illc"i:lli 01 tfi:J~.iIl]h~lhl! pn;Jp~ ~1}ttag,~_

]~()R I~.,g;; "I:>i.t~.aD~ for- 'Qu- ...~ik, e5peeiill!), "",,ullcI, dir.,,1 tlld)'n.:",,,. au . " , . , < 1 . ,,"kh ~"I'pl,y ;I. viiI~ m vbll. and. "Qli1f<]]t "I a~ut

""' I"~' ' Iil", :!it.~I[~,c'''~'.kn tb•I!;IJ!It!!::rfl:;l tb~ :!.nloi;iu~t ,~ f i.i:Urftlnl to ' 1 J . e :

l' l bAioll autcmebile ,g~Ili~lI'llfbO" ~~

[""lllty io r U:o .m<l l l shop : i : f th" curr~ u il .O b ly r ~! :I Ih n~ "~ \ \. illi th.ooUJ,.'I,mc rc in l i !t ls 'r .d . .l I: u io J ls , gl!!ICI!C'rdlj' 1 : i ! : 1 !

rl;oo~t."'I·~,"I).~~[ th. gl:norul<!I and <

th e f,lj~.Ii"li ",oJ .: . ,

T . b e ~jj"tlil"s c ~ ~ !m g .l ~ ,.]W!I~Ss aigM ly 1 "Q l< X ' "''''' t h o . I > t o . "Sorn~"ifij;~ .5t!\'~rn1 ahml~i lU .1 ]! ; . . o o u l II•• "'' '' ]; .•C...!,,,[ 'pure II~.I.JM~ ~!i<.''' <'O<;i~lJ.y rm N~ ~"~,nk~iiJ'Jg~ but 'm i: il tt 'l i n the :sh~t~~ l~~ u~diiil5 Ii.jjDtl~, ~'o:

~~L~.

.A !,. o .~ <I~llIe l ,o ' . l~~".J:IrOO[] .i1!: 'P.o~Jjy is : .]o.rIiE m ; . y phtb],gins1 ru tee, '" ,_ ! ; .i id " f. I1 I. .. ..bosi"~" l(l~\lld b:~J.lati'!,<"I'iPU i>;Illi " ~ l '! ~"o!"t !,(",neil r .. bbing < l . I,,,lls.hing o

C " " : f . ' J ) ' i ! ' i " i~ ~:IIfi""". 5p,,?,,1

!!-lId .IHlo(iei ar~ Jumllhulgrt:f.".11 .go[dp Rom:ao gol,d~ raMiqll., :EligH.",btlghl. jj,jjd

:i s ' l t s~~U" l !emo".d i'roElllil;; l>:il l!~"ernl.:ime:l ~!l(lnl!'h~jr~ta!cb·brushed '" lay !'h~ "'etal" ~ndL 1 i c : i 1 claencd M 1-1 '!h'~ ...·.:~r.

and e.Y"nhl. bolo." :ith. , . . : L : . . . . ,d'i" Ihilbalil.QI~ ph.;~f~ i . ! i '!'<'I'rIQ"c;:I by .~

pm~.",,~I«1.".! i ' l r > F . t ' l i ! , " ' "~!du,"",~ly W!l91s '~ in. dfpping the

" " " I t . into .a ~e"l' stren~ ~d.dpJdI.. ll'b~n 'he old pw.tingb . . . . . breJl~~!.<'D. "J1 , tho ' wa,l i 'cl~3nv!.a.~lt ' le\ ' ij)~y·~~th1l00 ~re II L JlI~d Hi the P.:;J;UIlIbdh_'rn~..., 1 ; . ; . . " . . . . bedwith o~,.~

""al~r illier pt..ling· :ond dried I.nbo~~'(!o i )d r (;!let " , .w dm , l _

-f9 fe'rnQV~ J:g:~iflQer from ,!l

pi,,~ D r work, 1'1,,~ciIh~m<!.. lln

.f'OPl'lLAR. S'[IEN'CE MONTH!."

:: t JJ[r~~1111ll;lP. o[ ]~'14 -Ul~1" t t 1 ! J ~ Iaequee ~removed, W .iLM th i:: p iece io "!? i I I, ' t :e:~IUl.c, m il 'II j~ ~f.nl~~·"l;a[on b.loi'; p11till~.11 mlllt b e u nd =r~ l00 d. Iha~ a l l . " ", ,~k I~

b e Ill:at~d m ..~t bev , e ry Iho'rlilUl;hlr pc t~_

i & l l ~ _ r d . . an d _ n [J jI SC ]' J] rt .( $e sr em o v ed , 1 : };C - .; ;~m~

p 1"UI,g w ill n~t h lde O,fiytlrt""O:"'ll<Q; lf ithe !\lrlQ~C,So r n " plir.ti.q b .U ,~ b i!VO 1.0' b e h ea l'til.

Cllpp~r &m:i g<lld NUiut lu8S jl;fj!' nea:ced

ttl abeut !SO~e,g~.~ t"~hregh~il!l?l_l5inG:. : SUy,~r ; [] 'n d ,n~i:.lt>M~tUth[[:[5l! ]u:nr ...

i'ill'. J..~·t:n.'llid-i! c] IL ~ IjJ.n ~ pI..~ ~·iiJl1I;l!: I.~ ~~

UIi!Ir caa prln.l~IlJiI ' t J 1 . f l i t ill i l:bc' ro;l .il l~llJ~T-ti tl1 above,

<"~r,""~used eeld, il.""..t), '~d~,"M'd .:l" n good qui! . l i ty ".hik_11"h~~~lcllll1l_wIM~hil~ iip.oi 'fQ J tnam.J ...i:lh no b-.1<o h.u!cnHiI i" 01 OOU~, !,o! to ben "ytrufl'!l else.. ~~.p ,, ,< tie al ly . .b~ . tM .Il'" mtr~. up - a t II ·~trong;, ,c}'~lllde of ~{M~iUJQ, w!i1;:~'in!!lypo!s,m"LL~.

Uo n u · t 1Jlldcf ~fikc:i=IltiiJ~

y g. u r b ~m !e : i~ Ib ~ (!_-"g.fl~ ·~gtiorubbo r :gllo"l :5 . "~Il1'",1«1;"",:uMi"k is 15 -Wf i et id~~ ( ]~ oop~m.r~i~be 1:J l!~n: lyh"J"ilod by 1.10"50.'!o"!l~rin 1t.~~ljll.g CJ ' i I ! l~~"iQI~~ vei'Y r=()l~pa~biTiW 01 ~lIb,,· mouth D . i , D . t~e "~~ht~t cb l ! : l ' J l I ' S tJ:f t h r : 'body oj 'E);t~~[J]!C ~lijl~ part 01 I]]" "'I>rkn, h"W ~el:irni"'u~ any ~l lmg<·".I ' I",rero ""m~ttnlc.:!J Y,$!," wh~I

".lriktng.".lb.," ....bir.h;' ~.~p!:dbiH~ -.'I",.jLna 'ligJTt~ b.igh~'tilts ii, ! l ! i ! O C 1 . j ·OI ·a .h~rl,imo' br .( !gLJ l. a. r' b 3 .l :h . ~n lo,:iXl~f lQ iltii.n

motu d<jHl,,; t.1."ti."Jl~. "l~ ,.,,, ",uo.lJ;y lin

P~~l~ ~iurt filcli~1pl·.t;.D~,fiIlU'. J . 1 " , , , ' , b e . . the ':"

meial, , , : l i r e l t io ,yoc J:l1. I.d by"lb."'= !t~~ O J! .. fl~!l1:l"g' I I I.nt, A

< < >j )l "" rp l ,, ~< !. ~ n'l ~r !lIe' , . ~ > < !a : i l J ~ H~tivl;I oonTI~tl.iQIl to thS O ' ! i . L . £ o t . . : IJam s m nd e o ( bi:.c'.sWILbuilt , . !WU! Ih. !~"-, lap .pi.= l{). ~ !l-fm e the 50] Y ~ton ,

l"uh;~ 'U~;tl, ,~t : id.f .I"Mc~i.l!f r Y r < f a r ly : J t " ~ l i O i 1 , I i" " . , , Jr e , ' /' I r"I ft l l ffl w m ' J m k , ,, . ~ f . 't '= . m " ,. trllll",,

~INjitl'l'.' fro", .JJI!~Jmtl<!l,

By

[ ADORE

KOWARSKY

nil IUl l' l: h . ..a'Ph, l i I I lT huIJfutlld:!I'II!IUligtI

.Jl1II1It '.qLlll

Iht l •• q l.l l"_ cn.

niii!llilo'lu rl l

~UlJJu .ldlOili_mruJ 6 ...

electroplatingwith

ZINC~CADNIIUNl

A, new, sfi'I1p!e.,r(J(:"~~i £ o r CO_:ili; n l l l Irla~l, v i : l h 0duroMc, r n o r : i ! l h t look-j'ng', rll.lllp r,(w! u II~)!

AXE:\\, method .1de~lropl~Li"Grlln"'iLh ~iJlN'ndltli-

um nlloyi n;:;w r . r . ' I I ! i : . o I : ! s . 11

' !;.~!bt~ (ef !H1yObr to

olll~.in ur~D~oi 'l)!aUnG, nUUU, " 'i thou l lOO U " " o fe apun shre ifi31fUmrnt.s

Md ~iI'Jtl)nwn~,ne ~~-:~t. n"t~E nm •• ~ '"01

O~]l' "ul'dlll~, U1li lulm"ned 1> :dm~[ l t . hot L~

n ,r ;whJe O" ,be it po~~ii!1. Vt'0I,1I(( io n '["'' ''ccrroslon.n~ilm.fthod n!l (Ie\·i;!.rfi~d i t i l ,he

<]"mk.J I.bonitofy o! W•.Jliog!:on t:n;'\"er}l t) l . 5 1 . . L O I l ! J . s . , ,l'Jt'L, 1 ! I . r " ' ~ r ' t~ s u b ad.n"wn 1 1 l - , \ ,"min . 1 1 0 ) " ' oj hilj:b .in, sndIDw [l!dm.b,II:r.I [Drn-mt '!Jil!re ~Jffi'D'It. [ttl good

:[l!!l :~ri!' (ailJ:mEOft1J [01': ' fU.lI.tbJf.tK.I Glg jJu~-

I't'~~, I ~ WiU "io)un;] 1 r, ! l iw , • • ",11(;01 re-",lLl un iro~ iriid... llli; roo '" dlfficulL

I [ORdi t ion ' ! ii . r equ i r in .g (i f UI!! o r no (OD.

[or sh-arj. nlll~~ 'Th i!l be~ ..ior '5 m

"own,," fo, plating .,'uti"", .Jld • gr. l l.d \fJ !D l!J .tIg .c 1 -0 l.hi2: \!lJrui((!i!t' w'bo hmj JU=

pI 'IM bol'ilfi> bUl"'l;li<" UI .b L.,Jn •• go!reS 1!I1 1sns the ]Jfu ffcs .!id na.l p la.Ler.

, 1 " 0 ' m"'t wor!<, n , . ~~f!:l T1 l~b ~ .. se!In IUl~oml;lbfl;:' ~l.-.yo[1:!~ b..l\~'I:'-Q' ~'rn Kf

o . a, (m ille• h~ r H,•• wO o ~lI p ~'UL~"'" "~'b ~n Uo I!m m 'i1 d. S llch :! ' 1 l I lk , w m ri!!q

hom 'I 10 IV. gnl l ous o~ •• rutio", 'If

lll" ~'PO"" l . . . : J y I~'o, 10k> .c "'...L"Il<iS 01 Lb. Lml< ~Jld ~ llli ,il ncnm

midJle u ~bpwn i" !.h~ ili.~m'" b e lTnon "'mnL~1 ib _ tw o end L"IM :~ ~QfMl,fith'o poil. of Q 6."otL I·""g. lLlu<and L"" milld", Illbe 10 lh. ~~R~tr," ~1" Kr1e-.s 1~'iLh U. laH'irT or n~ti\"1

line, in:s:cn a rltcO!!IIlt. The IhlllH t:;lI1imr"o"i .<d r r u ~ ' n , , [Ch rDme wi•• limtui:dt ~[ld n hnllery_dip, 1m- ~i~Ulh~

~iJI~ \";L'riri'l I", s lirJnllJ: J . h ! r h~lL<ry.o l o D S l I , . !.o g t .h 01 I b e w ire , H yo " I3 n 3 Iti11m_ ';~~ tqC filif 'ltltl i~n arril. !. lo wi•.. ' Itridncme \ , ' ; :00. ThC';!.~ cccnectluns g!ft

Lli.c~,,"] in lb . di3$r~'I!. \ \ · . 1 > c < ! ! U'(> " " ' ! ! Wis , III h : . , : nD ' I 1,~ j3< tfirlrK!t:t i!al'Ji [IJ'1!! the £

, "X'''l~l L11M ~. r iJlO ),llLl 1 ~ cu:~ru;~t~11

. . c il r 10 1he r n ~ d i d l c ~1I~porLing 1u b e ,Fer th. ~1100~ (tho _[Ii",: i

nooi.~'. 1 J ! k ! ! l .dLbClr iinr .. rnr lm lu rn, [J 'b

IBL.ECJ: '1 i .OiPLA.TING wrrn21NC~CADM[UM

fC'IIfJr!~mf~1': '11 ' r o O - I n , ( I 1 l ' J : 1 ' .!I'J)

IQrLJliO~ ' i J , ' iQ be; ~;l.~)' fo r ~Il.-t pl.:l.I~ll~ l.:JJl

Obje(b iii HIC' t lJ i l tJ;~1 i] ~ nes t rrll'jlllL-rl

'otIQ~l!; 1'1m. ri!m.o..1 1 any s-Ujk.tucill r~

af' ~l!- b>~ r ubb:lr'lS ,,~llli a tfitdwr,l t"l~fLo:linm -tmftll::~ (tkc ~"9.~ Iq ... b c"~i:OJt g IknlJiI

i S C h t t l l 1 D rn:r I (I r r u r m i L " S . . T I ~ Q . ~ n ' l m k i n m:n

~ ~ u : n l.l 0" " I . . ill.", ....bo" .~ .~"'ao;-h5Uda tJi'~ahl :m.d ,1 Q,i;, v . n iii~um '1l"'llIm_i11.1I~l.lJr '!J.'pil!l'. Aftt'f.1"('mt};'L,jii;;: llHllutKl~

. f r l ! l t n t .&h ! < O l u t f : c H 1 , -"",wl t l w m 1 t 0 i l i htllllt:! ' . ln t .e I . r (;liaR Lll! l !m in l . b . c Jnl;] ;tJ{l~ 9a'Uuyo. B~M.IItl lIIo-t In ft . l i tJ~b them whb (In: rm ;g_1

~ lJ~l'r[1rLI'i'L:I ~1l1 Eb~!N 'Up' tmdl}C

\b. ~,.,lpI.t•.~fb ~ ;;;Q,I1t,jtfl:j!. tAt,,~rriI wlth ru!:t. ~l

,~n:oJl .!~reh; .~~~~~r~~f:L~~dl t ! ru~ hM bC C Q d .IS d uh""cd . - . r l K ! q OIintin'U

, j J : i I I bc.fcR : ..

I T E L t 1 1 r . : - n i d 'I}[ i l : ! ' J I p p c r .,....~[l!j a a s p e u d t l

, v o , k . fTO", t lw c:!lli'lld, Im "We ) ' " P

r~-~-'--'-'--~~~~__iiiiiiiiiiiiiilliiii iil_iiiiiiiiiiiiiliiiiii iiliiiiiiiilrii iiiiiiioo. n _ _ . _ " _ , ,

I I _ . . . . . . . 'I I E lJECT IO'.l.AT IN:G , PART '9 ~fl. f C'1IU CA l ] II 'II _ SmfJIU pert!:! f l : . "1 : ' e ! best ha..ndleil in bulk.. 1 1

I .sQmeUm~s tb.,ey' may be strung on NOr ]

1 1 CAT~O¥)EROD./

: ~ , t ~ C [ ~ i a ~ ~ . ~ g : : r l ' ~ i r . : o ~ _ : d e n ~ i ~il (kDOiWii1a,S; ~ "'i!a[inglllg witre")1 are at-~ tac:tuiJ:d to tllil.l ca!tbode' mo, S.tUl~a.rgl!r~ quantiUe.& can be' .s.tl'Ullg on a number ofIver,t.iea.l i!!l.~ill'iLgiill'iLgwi.r.e.~. 'I '.h .e cathode :rodI HOrt!~OmA:L.~U$~!SJ4SICN .should! be jogged freqllJm't[y~

I 8;, Plating bmr-rem ( D ' j ' na l" !: lJw'o od : or stone-I ' - i w,areare !l1lsed.foit ' 'b.a.[l;cll.ing small! parts- , 0 .1 1 M. even larger' ,scale,. The ba.n,el is~ s[owly ro'tated durlli.,g ~he pla:.'t:l:ngt1:mEi,~ WlU the tllm.b1~mg ad~on t.ends to bWll'5h~ -- .NUTSAlNDea.eb pa. : r t . .A cop,per. plate tntbe bottom.I iGL;A.~:s,BE:AO!i. ,nf 'the b.af1'\e~ ,l!le:r'l.!e9 as 'the' aathode. TheI OM5LIOOING ,!iUlod~is suslP~nd.ed90 that it. eannet COD-I WI'IlE tact tbe wOi rk astb.e !ba.I'TI~] rotates.

~: ~I I I

VEltflCAL SUSPCNSION

~ - - - - - - - - - - - - - ~ - - ~ - - - ~ - ~ - - - - - - - - - - - - - -I J

I I E lECTRO"LATI G PAR I 10' [ fLECT'RleAl] II I ' r I

I I .BfW!!b platmg Is ,(l[Jl1y'ablnt lor 'tQUcilli.ng,up WQJ'll apl!J1i;s)Jl. lJ]dplat.ing utl fOl" b"eatlnS' II I wurlt tbatClLnO[lt conl,liUni!l!nUy be. placed :in. illmok. B,y .ml!:a:R8of a ,s l i i ; i tEIJ,b l lb1l l ,ppnCBtln" in con-)

II ta.c.twitl ! lID a.! ; I ! l ; Id.II i l• lbe..p.,latilllG..IIOD1UliQfl; .i~ Ifll)wed Q . ,'el" 'U!e WQI'k. ~l"Id d.epQ;l.llIi.taw.el:JJJ JB . . 1 1 . _ . In.'!:)lce I~ or l ' e ; ! l l ! ; l . uniform IDm,the thic:koe!;ll;ll ot' w b : l c h de-pe:ndis '!>lpt;lnU ! l , - e I . : J J I 3 I J ! ~ ;t~.etgl"'EI< 0 . 1 : Urne \1.IfId.~ eurrent, I

I I 'F'wo simpl appllicaw)"!! ilI...; iUustrated. One is S l b:L"ul!!IBiit.h FI ib"be:n" -sEl t bristles; the Metal 1~ leF:'r.tsile Qr W.biC.:.h15 r l !J i~ i i t l@td .w . l tD . oDe fOl~ml!QlC it t . l lI!a,) laU:!:!g 1IJiI~l;:ai+ The utli!fii' : 3 J .p p l i ca . to I ' . Is .il ~, el~!UI wo~{!en do-wei towbic~ ~ t~t !;Ii[ c().tixm. I f ! : bl;:ld w~tll : t ! . b1iU[ljgoJ: 8.l!Iode ~tal. 'l"wq Ilh- ~I VOl t tlIr 'J' cells in ~e.:rie.s !um:is.h the curnm:t, makl.ng' 'Ibe mdlfllt [; t :1li : ta . :b]e. On.e ceJ] is, lD.d~ea. ~I e:I.l"OUCti to'!" plaUltG' with n:lc.kel.Tbe usual ,!lOhltiliii:Q9 gr .o t;! !3l'i1~:bdjleb1lJ:tftl'E!l b(!;8l uscd ill more ]II ". conoonb"ated form. Ad:ri R J:ittll?; ~""Um traga,e.a.:Ilth to : IIIU:t1cken Ulcmlo:r eallll~:rba::I!Id]1ng. ~

I I IAn apPUCI1Uon,o[ o;iil-tl!'C'e meb.ii lJol~iJh ~d tJ!.i.8:lng 1 1

~ w.llll . E I . . e1e:411 eloth 1 1 1 ; , US'll!ll,]]Y 'en6.u.g"h to clean Un:! II"II woi"k •.Gi)lj~"i!C'the :brnIlbi :!iJliig,[l,~ 'til I:h-c l t I ! ls tUve side of

I Ithe. battery aaJdthe WQr.'ll:to t~:JIell~gl!li.t[J'l'I, TJlO"nJliI~b-.li]y Wfllt I th l l r br.'UshwJth elem-olyh::.F1Q'W tbU! Qve- r JI

~ I_flo with I!!voil.n :atrQIU!:iI Ul:i!tii.~rtl:J,(l,p[atiJl!l' is th:.lck eDouf;.h, I" "" 'TD'1I I k~p'l.!!lg i t 1 1 e b l ' U C t ; l h '!IV!;!.]] f i . U e i : l J with oolnuo:i.t. Washtbe )"

I I "WOrk lm..~ed.i.atelY a:ftel' t Q o e p,l:! l!.t:ipg ~!Il , iIhl.i!lJ'ledi.

I ,o ,I;~r.:11o ~l'iI"""'_ + )it'NII~",10. " " " '1 " .

I II PQPU lA .R SC I ENC IE M ONTH it II' 5 i'1 11 0 11 D A T .• IF'IILE I

~ I~ - - - - - - ~ - - - - - - - - - - - - - - - - - - - - - - - - - - ~ - - - - ~

O n ly 4 -q i:rli!'tll~C~c;rI'"~1t~ iC~n be Ul!le(i, faire,llec~lr>oJl]a'lilJ,g" Ord:i,l.ta:ryN'o" 6 dq' e e I D ~ E 3 ,are ,suitahl!i2 f ,o:~' pLnUng" S!tIUI.~~p ~ ; e ; c l ;l 's i ~

jG w !ll ry. , IF 'O !t larger w~rk, U;5E' l, i. i" ,f:I~or,a..gehattery, an iinexfl,ensh!'eib;ai;t{!i~ C:b.a[['g:~ir.,

or Q :SMa.ll i !WiQto~e: t l !er i9,b: l ! r lJifl:~t, AVei ry

.if.

W~;:~5,i I " Ol i l \ , " , o P . , ' l 1 l r . > 1 ~ ,

! : A ; I \ ! ' !< : .

p,tactical, mQ'lo~en4?'["~~o~' Ol1tfft!~ e,an be;

buIlt :t:rntn a.:tI, oJ,d~~h"p. w.~Sihht~2I-'c b :! n ,e mo tu !' nnCl,alt l t , ai l1 l io:mO,lJ,Ue ,geHicrl' i! '"{ cO r. P ia .: oe :a r be ;Q s t a: ,1 i" i!H.JIe!l\ a~ ,iL b@avy=

du!t,y r~d~o f l]am.en't rl'le,ooltat, aRl!i[D.~aJ]]~U!te!t ~n ~b:iili e~!'c!lit a!!lsna'¥t"n, t~eon-

t['lol U l i E ! : 'iCliJirf.eil:t 8I.'Cc!J;rat.ely,l 'n ii!t ; : : ! : l l !LVQ'];tcMelier so it ca nbe~!iJe~ :1!J,l'I!'Q.~~UJ,>B ~liI;nll:: ~illlP'"

:p~y'wiii:'e~:by meiar:u; ,of a sin-'g~e'"tb:l["lowsw::i~iI'ih. ,RliieiOi!1i,b:t

a.~dm.etef: ii! i i I.~ u: ! !;ed , in theg'!T Ie man ne.r wli'll ..a ' !: ' i,y ot.h>E!: ! l"type ;o f eurvent i: 3 iupp;ly.

Whei!l '~bi.e a ,u rf a. oE 'l o f dlf!.gre~ied,a;[l~ ehem'leaJI.Y el,ea:ned work 'B!pp,e'a.r.~ '~.:'r:.~.~s.iIITI!.~(IOil!' 'coa:ted, wIth i I1 i ! : r . i > ox ide R Im ., l i t : .~hQ1!. l ; ld beotf;eaili.ed :IH : i i ! i . pieldi.ng :!lo!l:uti,o'.1'l!1 , < 1 ' a vm'~

i!JeE'l~itlg ' O i t t : b . e , :piatll:l,g'. .In.NiI (I!" 8~~61. E~thel' (a,)!!l,QZ" of !illLLlp'tl:!l:r~c add!. ·to, Jl . g,at o!il'wa:t.e:r', or 0; . , ) . eq;g!il,]

:par-:ts QI. fml l!r~!: !rt : lc: Mid aficl! water'. Dip tar on,cm:i:nOl'te or lei5~; :i!,~~ 1'~I!l),se'l!mme.d~atc]y to bot w.a'tel',

O~pper. bnli.i!llii",I}'1" bf''Ou~l!l. S(!t9!l:jn~ dh~t f:jt!,r wIth : a J , g"I;Q~'!'ot.(l~J :I:'\od 'w~tl,e ;ad,ti l ing68 es, of s lJ .lp b:U fic l3 :!o id , 1 3 OZl.o:f I1J~trk :EI!.cM"and.:L oz.olf I'liydrn~tllor~iCae:14, :111the o rd e r ~~st~ i l IOOI .~·~lof. W~: t .e iL".. B'tigb't.enil:l~ di:p: ati:r' "d:ii1e~44~n,fi!::' 1 :1 oz. of', s U l p : i : l l l l :r i i i l1 ! ; a.ci-d , n ' C i I ' Z . . . o 1 ! ' wUl! ' . i le ,a , e : ! J d " ,end! 1 ,I!)~ a f by 'd r o c hl .o 1 J 'i c: a c :i ,d i ,i n t:tU3.,v'olL"'tier.te l I . : : ,gs.t ~f w.Rler. 'Uille,botb d'~ps. tile, sI1!8Jing ,dUpfirst. A 1J\Q~~ 'bre~"thMl!1 f t 1 c l lOUl ' I i i ! ' ". . -

AJW;fl!.y,~ Q(!,t!:ae:idi6 :to waite:!: ' , llJot th e rev·e1",5 ie, OO)~ s.tone ooni l a lne :m. !i):n(1 );t;el;!lp1ille: so i i J .Uon coo]. H!u'!tdle' the 'wQrlr. wltll R bent w~:I: 'e . . .

,E'J;I!li:lhic p4~kZhi,g,l'l:l a :::m-~~i'icel'it!j!o.l~UQ!n ~:f ;!;l!i)d~'!.II;mch[o~ld:e{co:mmO:IJI !38.]t.) ,

wUb b l fl i. ; !; l s . oopp,er , or.l,e!i~ catbG~:es R(Dd.itne WOf'k 2:8: an .an()de" fonallY 'th,e pro-Ced!ll'!ill :fOf' el>e'cbie 'c]e!li.!III'ing (~eeEh::(itt!lilplaU~g.~iI " t ' ' ; 1 ' ) .

"I'he ,t':ho~.oeof a. 't~~h Oir cdtauHi:t fOl-the ' e lec : t rc lybe : ie :~e l! l !d :s la.tgelyop. tbe

q uantity o tthe w o : t l : ! : . :! 'U:idf~equen.cy of 1! l j se ,A~m.:a,']l ,cbJlnaW'a:rete~up,ma:rkel!1

SQ' that it will .n.ot be used :for ,:wy otlheil' purpose, ~ : ! l I , sa.tisiflWmt:.y 1io.~'eb~ctro,_

' p I! 1Ung f iD : g> e r r1 n g s :W l d s im i ~ il ll ' o b j e ct s ;, wltUeva;riO'UJ:;:sig&S

o f: s t o : ! 1 ! . e w , i ! l r E !

' o rocua lt lil, s~ lt ab le fo 'l " . ]a. rr .ge:t ' 'Work, Old ! atorag;eba.tte:r.y cases 'W.li th th e imi l ld iv ld l la1 Clell iJ

rem eV led.. deep glas 'Slbat te:ry ja rr ,j1 ! f rQ ;m, ,f\, disct l J : rdced ta..n::!l,·n'~gbtmgp[gt, a~ d

!ln~.g~us aqua .'r ~u rm t acDk aS il ~e, , e x , { : i e U e n : l WheJaivei ry : D a : i I " g ewo:rk m u s t b e. ha\Ud1~d,

tmilis, 'c:anbe lbuilt of wood~ or' old wooden. tUM ma.y be Wled.mr tl1!i!'Yare t:nm;~

oUg'hly ,c4epetlj ,cb,emJ!ca,lly a. s went as : physically" 'W'o{)dl ,~n.tam.era aibou']d res,!;

O ll brjICu to al to w a fr ee e h;c !!l ! '~ a'U Q ~ o:f'a ir u n d ' i 1 ; · I : ' I ! ¢ o t t b . f 'hJ t! l1 lli~f~· o : f sucb t a . l ! J i "em, be,mcreased by lining t~efQ ,",'lith ; < 1 ; tbi(!k OOI3.' t-jIlig of : ~ O ' t :!; !. i 'ap:haJ.t,~t t : l 1 J J i l ! ! , is

no t ! i t . p ' l 'o te~t iO:If i ,a;ga-l inst , eySi l l i de OO] :UlUOIDiSl " Many : p r o f e :s a : io ILa l t lmk s ,8.l[IE! lwed

with b i eavy ,S :h . ,ee t le .a- .d , tho s ea lms :oe 'mg so tde : red 'Wi th the . Sa .mfJ ma,te; r . taJ . Th'i~~s:~ecti¥e w~;It.b.O!i1t: e1ecb:,O:~yt:es, but leSI!l :~u~t.ed [-li' 'th ea e e o~ 1 ta ]n lll!ii:g :h l: :rg 'e

am.ountl!! of a . C l e m . f i i e s , ,dtraieB, aI!,{lJm:rtr,dBa

Pl'epi:i::ra.til'J'iJ o,~thg wOl:k L~ofprimQr~ i : m . -: f l l J i I . " L 3 l 1 1 . o e : hecaJ.uil!~·;tth~ :fln:i:sh ' ( J i f the p l t i i ' t e l l im,et!l.~.wiU b~ ~o :! mo oU '! i~ 1! ' th n !l the ,!i!!l1i:'.fe:cei.~tQ b~i1'!wlth. No, ;o.! lnQIJ,:!n 'J.,tof plfithi:g win.l:1:iue 11 , rough ~'I(l!!!'fi8<ceSRl.o.oUl.Va:r.i .oll8 tyPfrS ot grh:!,Iil!h:u; Q~d PQli~h~J:Ii~

w bee~B are ~vlin!lb]!e,!tnd. thil! lY :rnay be : \ ' !Sedo.~,th~, S l p: l: Il !a l l e! ll , , o cC : a po]i;sbin,l 'r h~(lI". ,O n ~.[a"tl'l!e"o~ on :Ill Bp~nd]e O1i.ttacned, d~recU'f !~liI '

t~e shaft '~.f' ,an electr:!c mObJf'. For very~~aU work, .EI\!I:i:tablewl1eeh~ may be. I)b~11i!Jlnedfuli" :aoy of:tbe: pO~II:]];ai" :b:a:f:l l.di~he~t1!.PQWle:r tool:!'!l. V.ar~ousI'iJJofa!3i'l;~e!3, are ·uiaied.n llJ d, U ~e se , a r'e mO .s t, c oll1 ye llie n'i:. if if].J]bili:nedlin. tbil :f :orm ( ! l i t ' sUc:ks Or OO:k )~H~.V~I'"YrQlUghi!;l1)J!:r:I'~;Qe_S·il:rrU!ilt flr13'l be groullia

,(JIOW.II I . w:iiti] ~o!l!l!';;!e!lb!',!M!!~ve. ge:ner .a~hl" 'emeryusad wLtth amu:siUrl! 'Of' other :su:1a,l)~e w'hee lopel:'<l!:ted B ,t . ~ !3.'peed ofl'!roi'll 1.:200 to ]i, '50~',f;i.m. lf~fiier['emery oi: Qii!u[tmble: CONlllIQa:I., ..

Ir,ElEcrl~CA~J

t~Of:i owi J l : t -h e :[ li 'e d i ll l c~Uw ~@~I"$B: s 'c ra ; tcne$e e m 1 ) J ! e : E : i .~ l : i J e ~ · oHe'/lj,. tmtti[ the w , o : r k : E I . P e t l . : F 5qul'te .8WOoUI. His 'l:ti!el!! • 'colo: 01'

~lVlen ,9; h~gEl: poUshwit:b !i. i!ioftcottoifiwh eJE !] a rn d. tri~ (J ,U ". ' ! l l i f o.nE' : oil:' the BjJee~if l. l.co[or-ing'cornpoil:iUoniS; 0 : 1 : " w]:tltt(f!llige' .:in.'lhiee9,~e of ~i~'l '>er. glold,.a:nd ! l( lf1 l ie , of ~e~oit't n)!~bll;]~.W'b>eeJ,$ [or dd~l'h,!!l;llil;!GHsh.mli.\Y bi!l l , I! )P~NL~.~dmucb . f a . s t e : t : " , a t : C r. t; ;!n 1 IB,,~

. I X IO , ·; p .. : m • .1e;!ill.!jar(lm(lUH~ed so t h i! l! 1 ! : t he U);IlIi!If.ilt"

half t~.u;:n_$Wli1I,llU'([stne: QJle~~a::to:r..Sticks8 : 1 ' l 1 : : l l , e~o!!!' g:rtnKlii:!lg : I 1 I ; . H d f _ . - - - QOII!-'

pOI;l:lt~ona~'e ;~p'pU~d.by themUie 'edg:~:I)~ th~· revQl'll'i!nlg w'b~e:l,

_ WQ,!f~ ~!lJ ];Il:a(!led!lg;!),~n~tUI,ewheel CQn-'

~~deTll!bbrb~I,6,w rente(.. :and] t h ' l O : m : btQugJIil;t

I l !a:p'W~ l: ' \d,! j! , 1P ' ! l r ,1! : lc ld! lFly in th e ease of 1 1 : , fas twbe~ l . title workmuat be gill'.a,iSped: f I ; rmJ~yto~'I,roj,a!h.~ving~tUU:l"Q'Wf:i ff\Qm,t~tie:h,lii:n!illi l ' j"

CQIi~~~!P]a.U~g : 1 : 6 i!!iri j~portaf.it :pr(iCe1li~ not only-for JltJ:iili~bii:iga rUc le s , butt. 81:0;;0M :a l re ' l ; l 'huent .~l'e:Umh'!;en:Y''to U~,eJdati[1J; o . : f othe~ .metal!ll. Cop:p .e l l ' d.e])Mi:ts v~t'¥p.ea.dU.·Y···In.an , .QC~di , .SO]U. 'UOl ! :• b~.:t,wolt". ,k,.co;n.·~J~.~li: I .go:fu' lO(~, . ! 'i ;t e e l, . :o r ~ .Ul ,e m . :u ,s t r,:e. . : : , e t v , e .a pre]imi'!:I!1ry p]:!it,'thlg'in ll;[1 alkaline !'iIohlitlon. Af1::el" be~i:l,gUu)~.oI!J:gh~y'r~n5ed, itmay be, t:ran:ilifeirtoed ,to the a:.ddelecilrolyte uo:m thepJate is of the desired thil~k~n e s s , [f it ~!3,p~l.'Mled! di,recUy :in the acM, l lO i o t U , t i IO ! t 1 , . , K fbin ufista~1e detpos~t.m

fiormled. al:l!l!the, p~ati[lgwin not he d:u:r8lI;d~,,Acm,e~6C~"O~!1tC.['li,j£!liOJ'!;'e '1 ,*, lb . oO'~pe:r l I 'mJ ;phaJte h i ! :a 'q uarn.ti:o f h01 tw a:te r"t:hrent, , did , eQ . ].dw..,.a;ter ,~(!I l l ' ! .a j [,•e 1 g,a]. W .b;9. n lli.:I:!: l S i ~I(l!, ~low~Y'add ,~" S;,Ullt'hU!!"~C8I! e jd , rn :ea :nwM]e l sUrr l !1!g wllh a glass rod" USIe l,y'! to 3vol1 ; :s : !I;N; p aUng •

.

, . A . }. : . 'm.u~e ,.~l.€'C. t 'e. T . ih~s l iS. m._' l'eln,a.·~.:y.. ~OjSO.'!I ' i. , .o..W . 'S i . ' us~.·. . . t , ~ b . , E ; . · • uUn..•..,.o. :i!t .,ell i..r-e. ' l .n,~n'lO!paf'I:[l:gllld ,e~ ng n, Do not allow it t!oC'OMe tn C!OIi:'Itaetwith tbe skLn.l\,'I',B'llcr addM~a :~Q. . . ama~i~,~es()l"U~'diQ~t~.or dc~~, tJ : ;11 ' . l1um!3 , ' j ~n be gtn~6J'at~d;.I'n2: ~b;, wa:r~ll. w,a.b~!t diS1So.1ve il l Ib.S!oohl!m eY~ljd!e,. (PO]!SONL Add'.8 i(l!l:i. CQPpeil'

C4lrbolr! ! ! : ' l Ite : ! l lowl)" . : s th ' f lng. 'unUl th ; e ' S lo . l u :UQ~ l is . .clell!!'. 'T!Iu!fladtil ,: ;l il lZ • . :I l iOdhl.rm.ca.,.! ' . i b C l . "! : l I t !e.I> l !: ' !.d . .W . ate.·~ t . o , me.ke 1 g'.fl!.l.. U. : s e 3 , to . 4 ... .. . .l). t f O :r~. ' .rp l a . ; U f . I . , . .:I'l:,.u.ne:tea.:1'I! : a . l I t : E l , n n l lsah~Uoinmay eause bUste!l"s Oll l 'the work. Ril'J!se pJa:ted ~rUe:les In bo.t Sind (w'ld,V!l 'ate:r ,a] tE!rna. t .e ly selvef'8i~ t~rr !Jf : s 'be :f 'Q~e t r . ansfe- r!! '~ng t~iI!m! ~o ~,heaetd l ; IaU:1 i , 'T~e,ac~d sci~ut~of:l !lI:t.IOU](],be 3,g:I'ta~ed! fre~ue!1nY' to : rn~ve in t . depJ~t~Qn 'oii!'t~e , m~!I;aJ inSQh~t~o!fl!etween tbe .an(ldlea~d. the WQr'l:!:, TQ!) mg~h v{]I]tiDJg{!/. ma,y !r(li.'3.u]~ in a,dark or bUI!"l1ed diep{liSU or bru~stll<lr$, ReguLa.t~ th.@ CU![,!I':cnt~(I tillail:" tb~ co'~or of thework 1'( l;Il i.ai!!ll .s .Q roiSe; Unl A. g>ol!)d g:ra,d@ ,of ~bl2ct co~,:perwi~,[ !li;ef.ve :as an i iJ:node,

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