This is a simple can crusher for 12 oz soda cans. I printed in PLA. There are two sets of models to chose from, The non-combined version prints the Piston and Piston Cap separate along with the cylinder and cylinder bottom. OR you can just print the Piston Combined and Cylinder Combined prints. When crushing a can, it helps to squeeze the sides a little, like a pre-crush. Can be stepped on or pushed down with hand pressure.