Shredder for paper, plastic and cans

thingiverse

Hello, this is my 3d printed shredder that i made as study project. It has an opening of 22cm to easily shred A4 sheets. Works with plastic bags too and can shred coke cans but it will make the teeth wear faster. Printed the teeths with 25% infill to make it cheaper but it held actually pretty good, haven't broken a teeth yet. The teeths are friction fitted on 25mm aluminium profile. I made no-ball-bearing to make it even cheaper but ball-bearing canbe added to improve it's performance, mine work with a thin layer of grease inside the bearing that prevents wear, but it adds more resistance to make it spin.