Per a request, here's a school bus fidget spinner. It uses one 608 center bearing and (3) 5/16" nuts as weights. It's overall diameter is about 3-1/2".
Printer Brand:
PowerSpec
Printer:
PowerSpec 3D Pro
Rafts:
No
Supports:
Doesn't Matter
Resolution:
0.2mm
Infill:
50%
Notes:
If you printer can't bridge over the hole for the nuts, you will need supports.
