This is a smaller version of my Fidget Ball, using only one bearing. This one measures 35mm across, about the size of a classic gumball. Like its predecessor, it uses no glue or hardware other than the single bearing, it's designed to allow easy disassembly to retrieve the bearing later on, and the files include a simple stand to keep the ball in one place when it's not in your hand.

Supports are needed for the two ball halves, but not for anything else. As with the original, the ball halves were printed with BambuStudio's "adaptive layers" feature and the rest were printed with .2mm layers. The peg is meant to be printed sideways, and the ring should be printed with the larger side down to avoid the need for supports.

One 608 bearing will be needed (I used 608RS, but any 608 should work fine).