A hub for Disc Brake Coaster Set (made by @ScatteredCollectable) to glue in place. Originally I had designed it to be glued face down to be a functional coaster, but I noticed it also looks nice glued face up as a desk ornament. I ended up doing a mix of both.
Two hub designs are available.
For a better finish, try using a Concentric Bottom Pattern Initial Layer and Monotonic Ironing in Cura. I used eSun ABS+ Silver, Polymaker ASA Black, and eSun PLA+ Red filament.
The author remixed this model.
Added a hub that fits in the existing parts.