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You can build a BULK TAPE ERASER: Plans
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$4.50
 
You can build a Precision SATELLITE CAMERA: Plans
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$5.50
 
Build ultrasensitive 20-MINUTE MIKE: Microphone plans
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$3.50
 
The FORCE TABLE demonstrates equilibrium: Instructions
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$3.50
 
ION-EXCHANGE FUEL CELL: Electricity from tap water
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$5.50
 
You can learn to PURIFY WATER: Science instructions
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$2.50
 
You can build FLUID-PNEUMATIC CONTROLS: Science Fair
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$4.50
 
You can make CHEMICAL FLARES : Instructions
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$3.50
 
Build a MINI-REPULSION COIL: Science Plans
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$4.50
 
Build a REPULSION COIL to demonstrate Lenz' law: Plans
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$6.50
 
ION-EXCHANGE FUEL CELL: Electricity from tap water
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$5.50
 
MAKING MAGNETS: Instructions
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$2.50
 
You can make your own PRINTED CIRCUITS: Instructions
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$4.50
 
You can build a JACOB'S LADDER: Electronics Plans
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$5.50
 
You can build your own ELECTRIC BUZZER: Plans
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$4.50
 
You can demonstrate DISTILLATION: Plans & Instruction
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$2.50
 
You can build an ECHO - REVERB System: Plans
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$4.50
 
Build electrostatic AIR FILTER for ultrapure air: Plans
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$9.50
 
You can build a Pin Hole Lens COPYING CAMERA: Plans
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$3.50
 
You can build a BABY MONITOR: Instructions
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$4.50
 
Build an ELECTROMETER to measure atmospheric voltage
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$3.50
 
You can build a SUN-POWERED RADIO: Plans
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$4.50
 
You can make a DAVY SAFETY LAMP : Plans
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$2.50
 
Build a Combination-locked ELECTRONIC SWITCH: Plans
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$4.50
 
Van de Graaf 300,000V PARTICLE ACCELERATOR: Plans
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$5.50
 
Build an ANEMOMETER / WEATHER VANE: Plans
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$5.50
 
You can make a PORTABLE TEST BENCH: Plans
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$4.50
 
You can build a SALT WATER RADIO: Plans & Insructions
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$4.50
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This page was last updated: Dec-04 12:04. Number of bids and bid amounts may be slightly out of date. See each listing for international shipping options and costs.

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