tri fidget toy (more momentum, less friction)

thingiverse

I moved the bearings out just a little further to push out the weights. Bearing fits can vary.. not so much the outer diameter, but the inner can be specified by C0-C5 (C3 is typical). When I printed the original, the caps were very loose. These fit nice and snug. Also the way a bearing works is the inner race is slightly wider the outer race, and you should only touch the inner race. By adding a small step in the cap, it creates a gap on the outer race and spins freely. Lastly, I loosened up the outer race fit in the 4 pockets so they should press in with a clamp. I don't recommend hammering them in, you'll crack the housing.