* Hold mousbutton and move to rotate. Hold right right mouse button amd move to pan. Use mouse wheel to zoom.

Description

zheng3.com/2012/05/15/the-penny-catapult/

Here's a basic torsion catapult. It uses one or more elastic bands to launch a U.S. penny if you print it at 1:1 scale. You probably won't get enough torque to be impressive with fewer than 3 bands.

Penny not included!



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