Cool fidget spinner
thingiverse
Check out this model, freshly minted in my mind and designed with Fusion 360. Keep in mind that the holes for the bearings are precisely 21.05mm, so you'll need to use 21mm diameter bearings to get it right. I printed this design using these settings: -50% infill density, a 0.2mm layer resolution, and no support material at all. Feel free to experiment with your own optimal settings!
Download Model from thingiverse
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