Grinder BCAR

Experimental BCAR using sorta serrated bearings (you can't fdm print the edges very sharp) to try to reduce slip. Does it work? Idk. Some batches of my darts fly through it fine, some don't. The flange could be already enough to minimize slip at this level of crush, but I don't have a high speed camera to confirm.

Uses 9 f683zz bearings and 9 flat head m3x10 screws