Quadruple Bearing Mini Spinner
thingiverse
This uses a 22mm bearing and 4, 1/2 inch steel ball bearings. For the 1/2 inch bearing placement I channeled it out slightly so that the ball bearings have room to move so you can roll this spinner around on a surface or with your finger or thumb. Included is an STL for the Caps that I used Print Settings Rafts: No Supports: No Resolution: 1.75 Infill: 50% or more
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