Fidget

Before creating my own design, I had successfully printed one of the many Thingiverse Fidgets ( https://www.thingiverse.com/thing:2032459 ). But the size was too large for my younger grandkids. So I located a bearing and some hex nuts which I already had and designed my own.

My design was setup to use the following hardware parts:

Bearing: 0.25 shaft x 0.625" OD x 0.195" thick
Nuts: 3/8-16 tpi x 0.328 thick and 0.551" flat-to-flat

For assembly, I used my workshop vise to press the bearing and nuts into the Fidget body. All three pieces are intentionally tight fits. The two center hubs easily pressed into place using my hands.

If you're interested in making your own customized version, I'll be uploading additional more details and my CAD files at: https://leisurenotes.com/?page_id=609