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Scratch Awl Preparation and Turning
21792
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Slimline Bushing Set
Brass TubeAdjustable Mandrel “A” Nut
Brass Tube NutMandrel “A”
Slimline Bushing Set
Wood SpacerMandrel “A” Setup:
Adjustable Mandrel Setup:
Blank Preparation1. Drilltheblankwitha7mmdrillbitataspeedof900to 1200RPM.
2. PolishtheBrassTubewith220gritsandpapertoremove oxidationandroughentheTubeforbetteradhesion.This canbedonebyhandorbychuckingitinadrillpressor portablehanddrill.
3. PreparetogluewithmediumCA(cyanoacrylate)glueor two-partfastdryingepoxy.
4. ApplythegluetotheoutsideoftheBrassTubewithaliberal amountaroundtheendthatisinsertedfirst.Donotapply gluetotheinsideoftheblank,asthiswillcausetheglue togetinsidetheBrassTubeandruinit.
5. Method 1:InserttheBrassTubewithatwistingmotion intotheblankuntilequallengthsoftheBrass Tube(approximately1/4"or6mm)areexposedoneither
endoftheblankfortheThreadedCouplers.Wipeoffany excessglueontheendsoftheblankandontheBrass Tubeandallowthegluetodry. Method 2:InserttheBrassTubewithatwistingmotioninto theblankuntiltheTubeisequidistantbetweenbothends oftheblank.Wipeoffanyexcessglueontheendsofthe blank.Allowthegluetodry.
6. Method 2:Usingabarreltrimmer,disk,orbeltsander, trimtheendsoftheblankuntilyoucanjustseethebright brassendsoftheTube.Thefaceoftheendsmustbe perpendiculartotheTubeandparallelwitheachother.It isimperativetomatchthelengthofthetrimmedblankto theoriginallengthoftheTubeandthattheinsideofthe Tubeiscleanandfreeofanyglue.
Turning the Blanks1. Assembletheblankonthemandrelwiththebushings placedoneithersideoftheblank.Notethatallofthe bushingsarethesamesize. Note:EitherWoodSpacersorextraBushingsmaybe usedtofilltheextraspaceonthemandrel.
2. Tightenthetailstockandthentightenthemandrelnutthat holdstheblank.Donotover-tightenthetailstockormandrel nutasthismaycausethemandreltoflex,causingtheblank togooutofround. Method 2:Measure7/32"(5.6mm)fromeachendofthe Tubeandmakeadefinitivemark.Usingasharppartingtool, removeallofthewoodfromthe7/32"marktotheendsof theblank.BeverycarefulnottodamagetheBrassTube.
3. Turntheblanktothedesiredshape.Theremustbeaflat areameasuring5/8"or16mmatthebuttendoftheawlto matchwiththeCap.Theremustbeaflatareameasuring 1/2"or13mmatthepointendoftheawltomatchwith theFerrule.
4. Afterturning,sandthesurfacesinprogressivestepsof 220,400,600,and1000grit.Ifahigherfinishisdesired, micromeshsandpapermaybeused.
5. Applythefinishofchoiceandpolish.
6. Removetheblankfromthemandrel.
Method 1Cuttheblanktoexactly25⁄16"long.ThiswillleavepartoftheBrassTubeexposedoneitherendoftheblank.
Method 2Cuttheblankabout1/8"longerthantheBrassTubetoallowfor“blow-out”orholeelongation.Later,youwillneedtoturnaportionofthewoodblankdowntotheBrassTubeonthelathe.
AssemblyReadtheassemblyinstructionscompletelybeforeassembly.
1. PressoneThreadedCouplerovereachexposedendof theBrassTube.TheThreadedCouplershavealarger diametersteppedareaontheinsidewhichmakesiteasy tofittheThreadedCouplerontotheBrassTube.
2. ThreadtheCapontotheThreadedCouplerwiththe5/8" flatmatingarea.
3. InserttheAwl,threadedendfirst,intotheremaining ThreadedCoupler.ThreadtheAwlintotheCap.
4. SlidetheFerruleontotheAwlpointandthreaditonto theThreadedCoupler.
Reordering Information Stock #ScratchAwlKit.....................................................217927mmMandrel“A”with#2MorseTaper...............435377mmMandrel“A”with#1MorseTaper...............39389Adjustable7mmMandrel“A”with#2MorseTaper............................................25581SlimlineBushingSet............................................435467mmDrillBit.........................................................36372PenMillKit...........................................................47526
Scratch Awl Assembly
21792 - Rev 10/12
WARN
ING: T
his product contains one or m
ore chem
icals, including lead, that are know
n to the State of C
alifornia to cause cancer and birth defects or other reproductive harm
. W
ash hands after handling.
Made in C
hina
Distributed by R
ockler C
ompanies Inc.
© 2012 R
ockler Woodw
orking and H
ardware
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Sc
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Brass Tube
Threaded Coupler
Cap
Threaded Coupler
Ferrule
Awl
Sc
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