Coil Gun

     

Turn a electric stapler and a few pieces of PVC pipe into a coil gun.  The magnetic coil pulls the metal slug and throws it out of the barrel.  The whole thing can be built in under and hour.  This would be a great science fair project.


Stapler Circuit Board




Parts List

A Stanley Bostich Electric Stapler with 20 sheet capacity (about $40)
Three 1/2 inch CPVC elbows
One 1/2 inch CPVC tee
One 1/2 inch to 3/4 inch CPVC adapter 
About 2 feet of 1/2 inch CPVC pipe
A small spring like from a ball point pen.
A fine threaded screw about 1.5 inches long and 1/8 inch diameter
A metal bolt or other metal object about 1/4 inch dia and 1 inch long.
A dowel rod or other non-metal object about 1/4 inch dia and 1 inch long.
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