Three-Axis Fidget Spinner

A variation on the traditional fidget spinner design which allows it to be spun on three different axes. The use of six 608 bearings gives it a satisfying weight and inertia, particularly when spun along the primary axis. It also feels different when spun along the secondary axes, which makes for some fun variety.

This is a bit of a tricky print - I've included an example PrusaSlicer .3mf project file if you would like to copy the print settings and supports I used. Essentially, I would recommend:

• A large brim. This design has a very low contact area with the build plate, it will come off during printing without a brim. Enabling a small z-hop to avoid knocking the model during the many travel moves may also be a good idea.
• 100% infill. Using a low infill percentage doesn't save much time or material due to how skeletal this design is, and the extra strength from making it solid is worth the small cost.
• Organic supports in certain areas, notably the bottom of the top ring and the lower edge of the two side rings. (See image for example.) I would NOT recommend supporting the top edge of the side rings, unless your printer really struggles with bridging; the extra material from the supports left inside the rings can cause problems when press-fitting the bearings.

When assembling, press-fit the bearings first inside the rings, and then press-fit the six bearing caps. You may optionally want to use super-glue to permanently fix the build together, but I found it unnecessary.

Note: this is not an original concept, but instead a remix of a model over on Thingiverse by AdrianMankovecky (see below for more details).

This model uses the same basic geometry as the original, but has been remodeled from scratch to fix the primary problem I had with it. The original has no ledges/lips to retain the bearings, and so while press-fitting the bearings, they would often be pushed too far through and/or would be slightly off-axis. This version now features small lips at the bottom of the mounts for the bearings, so that you can easily seat the bearings properly.