Can crusher for 355 ml (12 fl oz) aluminum cans. Also works for 221 ml (7.5 fl oz) cans. Made with a bottom that centers the can.

Also, there are drain holes (so make sure your can is empty) to aid in cleaning and poking the can back out after crushing.

For best results, "crinkle" the can a little bit before putting inside. The initial crush can be done by hand and finished off my stepping on it. There is a hole at the bottom for poking the can back out. Watch out for sharp corners, and don't pinch your fingers.

Designed in FreeCAD.

Print instructions

I printed at 0.25mm layer height in recycled GreenGate3d PETG, which I figure was appropriate. I used a pretty low infill, 10% IIRC, with a gyroid pattern for the plunger and cubic for the canister. A PLA print might need a little more infill to handle the stress/pressure.