Torsion Catapult

thingiverse

This is my own design of a lasercut torsion catapult. Post-Printing It is designed to have kitchen twine providing the torsion. It also uses dowels to hold the basket to the ark, provide a stop for the arm, hold the arm in firing position and an axel. The idea is you run twine through the holes and then twist the end pieces until almost taut. At which point you lock the end pieces with dowels and pull back the arm.