bmrc_clinic russ boehm static grass applicator 2010

7/25/2019 BMRC_Clinic Russ Boehm Static Grass Applicator 2010

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STATIC GRASS APPLICATOR

The $10 Alternative


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The $10 AlternativeHow I Made A Cheap Tool Worth Even Less


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The $10 Alternative

How I Made A Cheap Tool Worth Even LessExcept To A Model Railroader


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THE OBJECTIVE

Modify a Harbor Freight

Electronic FlyswatterCircuit to increase the

output level and Provide

An Extension Of OneCircuit Leg.


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THE OBJECTIVE

Modify a Harbor Freight

Electronic FlyswatterCircuit to increase theoutput level and ProvideAn Extension Of One

Circuit Leg. Remove the Flyswatter

Grid & Replace It With aTea Strainer That

Functions as a ContainerAnd One Leg Of The StaticCircuit


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TOOLS

MATERIALS

Things You Should ring

Two D size batteries

Small Phillips Screw Driver

Small Pair of Wire Cutters

X-acto or Zona Saw

Your Favorite ACC

Optional If You Have It

Cordless Drill

13/64 Drill Bit

Soldering Station

Liquid Flux

Fine Gauge Solder

Personally Provided by Me

Technically Advanced Probes


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THE PROCESS - TEST DISASSEMBLE & FIX SWITCH1. Install the batteries & test the flyswatter

Watch the polarity or it wont work

Push the button momentarily and let it go

Short out the two screens with the

technically advanced probe

2. Remove the batteries & disassemble the

unit.

There are three different length screws.

Keep track of which goes where. Note wire routing from the switch.

Watch out for the small top hat cover on

the push-button and dont lose it.

3. Secure the push-button switch

Reassemble the push-button back in thehandle and use a drop of ACC to

permanently secure the top hat in place.

Dont get ACC in the switch.


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THE PROCESS CONTINUED MODIFY THE TEA STRAINER

1. Remove the flyswatter

Clip the leads from the circuit board

to the flyswatter grid.

Leave them long. Remove the swatter assembly from

the handle.

2. Prepare the Tea Strainer

Use the Cutting Jig to shorten thehandle

3. Use the Drill Jig to drill the holes

Mount the drill jig on the cutting jig on

the part closest to the strainer

Make sure the arrow points backtowards the cut edge & drill the

13/64 holes

Remove the ears from the strainer

using the X-acto saw


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THE PROCESS CONTINUED MODIFY THE CIRCUIT

Modify the Circuit Board

1. Remove the screw holding the board and

remove it from the handle.

2. Clip the lead of the resistor in front of the redcapacitor.

You can also clip both leads and

remove it if you want

3. Bridge the blue resistor with a short length of

wire.

Solder the wire to the resistor pads onthe back side of the board

You could clip the resistor out of the

circuit and bridge the remaining leads

4. Solder the new leads

The alligator clip lead is soldered to thepad where you bridged the blue resistor

You could also solder to the old

flyswatter leads

To Alligator

Clip

To Tea Strainer


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THE PROCESS CONTINUED ASSEMBLE

1. Wrap the Tea Strainer lead

Go into and around a wire of the strainer.

Put a blob of solder on the mesh joint .

2. Mount the Tea Strainer

Mount the strainer bowl up or down

depending on your dominant hand.

Your thumb should be positioned over the

push-button.

3. Carefully reassemble the handle

Install the circuit board & make certain

the LED is visible in the sight hole.

Watch out for the battery wire routing soyou dont pull wires loose from the push-

button.

Use the screws in the proper locations.


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THE PROCESS CONTINUED ASSEMBLY & TEST

1. Alternate Assembly Method

The leads to the push-button are

weakly soldered and can break

loose on battery insertion. You can assemble all the parts

including the batteries in one side

of the handle & then apply the

cover. Or,

You can tape the wires in place to

reduce battery interference. Or, You can embed the wires in

silicone caulking to reduce battery

interference.

2. Test the Circui t

Install the batteries & test.

Press the push-button & release.

Touch the alligator clip to the teastrainer.

No spark No Biscuit

Broken battery lead from

inserting batteries


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USE OF THE GRASS APPLICATOR

Not UL Approved -----

Do not recommend spousal use in the tub.

Do not use to torment the cat.

Do not use in child disciplinary action.

Process

1. Spread glue over the area you wish toflock with grass.

2. Using a map tack or nail in the glue, to

ground the tool with the alligator clip.

3. Put static grass material in the tea

strainer.

4. Push and hold the switch &simultaneously shake the tool over the

glue area about above it.

5. Discharge the screen

Notes


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Projector

Heres the layout we used for building

30 applicators at our Saturday

workshop. With one helper per table, it

worked out well,

bmrc_clinic russ boehm static grass applicator 2010

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