Fidget spinner 2 parts covered bearings

thingiverse

Press the outside bearings firmly into place, then push them together. If they're stubborn, use a sharp object to carefully scrape out the holes and ensure a snug fit. Once the assembly is complete, you can install the middle bearing. In my case, I had to sand down the middle section to accommodate the bearing. Be cautious when handling the thin covers, as they may break easily.