Hand Spinner Fidget With Ball Bearings

I designed this fidget toy to reduce the number of bearings needed compared to similar designs. I used a cheaper 22mm double shielded bearing at the center. I removed the shields with a pick (be careful) and cleaned it out with brake cleaner and compressed air. This increased the spin time from 10-20 seconds to over a minute.

I chose to install a 5/16" thumb nut and button head cap screw through the center bearing. The added standoff distance helps keep your hands clear when spinning and allo