There are a whole bunch of hand spinners here, but most of them have three outside bearings. That's all well and good, and really works quite well, but when you get a 10 pack of 608ZZ bearings from Amazon and make your triple spinner, you have six bearings left. While that's enough to print two double spinners, what fun is that? The only purpose the outside bearings really serve is to increase the rotational inertia of the spinner - so why not go bigger?

Honestly it doesn't work as well as a triple spinner for the general use of fidgeting - the geometry doesn't feel quite as good - but because of all the added rotational inertia, it sure does like to spin. For end buttons, I'd suggest using the already excellent ones from the one I listed as a the remix source.

Monoprice Maker Select v2

Yes

No

0.2mm

50% grid

I only needed rafts as my printer is giving me great difficulty in first layer adhesion, so the raft is kinda a "throw away" layer. On a properly adjusted printer, that should not be necessary.

I designed this in SketchUp and wanted to have a nice rounded edge like theremix source, but my lack of experience with it added with its lack of understanding of tangency had me about ready to ragequit - so I kept the design really, really simple.