BIC pen catapult
by RutgersVirtualWorlds, published
Catapult for laying siege to your Office mates
UPDATE: New version for 3/8 inch dowels. This is untested. Stay tuned for more.
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4 Foot Joint2 2 Top Pivot 1 catapult arm 1 Ball thrower arm As many Balls as you think you might need
Collect 11 BIC Round Stic pens and 1-2 rubber bands
Remove the ink and tips from the pens and assemble the thing so it looks like the picture. Use tape as a shim to tighten up loose joints. The Pen body that the arm is on should rotate freely in the 'Top Pivot' piece.
Lay siege to the office
Update: for 3/8 inch dowel version replace 11 bic pens with 11 3/8 inch dowels 4 inches long.