This is a quick ball bearing to test adding metal parts (standard BBs) while the part it printing. Final part inside diameter is 0.25" (1/4") and outside diameter is 0.875" (7/8").
Note that the print should be paused so that the BBs can be inserted at 5.8mm high.
More info at http://makefastworkshop.com/hacks/?p=20160920
Quick notes:
MW_BallBearing_Cage_v11.stl | 1.0MB | |
MW_BallBearing_Main_v13.stl | 727.2KB | |
MW_BallBearing_v13.iges | 290.5KB |