Quickly sort bicycle sized ball bearings into their individual sizes.
Remix of original by pennyfarmer to make them printable without supports. I also did away with the 8mm bearing size as I don't come across those. Sorts ΒΌ", 7/32", 3/16", 5/32", and 1/8" bearings. If you notice in the photo, I didn't have any 7/32" bearings so that cup stayed empty.
To use, stack them with the smallest 1/8" at the top, in increasing size. Dump in a small handful of bearings and shake, and the bearings will stay in the cup with the marked size. Alternatively, you can run them one at a time, but stick with the large to small order, otherwise it won't work.
Full credit to pennyfarmer for the original, I just remixed it to not need supports and print much faster. This works easier and more consistently than another design I still haven't perfected. If you like this, make a contribution to their local bicycle collective: https://bicyclecollective.org/
I printed at 0.3mm, not much need to print finer than that as there isn't much vertical detail. Make sure to use a slicer with Arachne, such as PrusaSlicer 2.5 or higher so the walls should be only two shells. Infill doesn't make much difference, use whatever you want.
The author remixed this model.