Another fidget spinner. This one is designed for 608 bearings to be used both in the centre and also as weights. As with all spinners, use ceramic bearings for the best spin time. The spinner is slightly asymmetric making it easier to start it. It also uses interlocking centre caps for assembly without glue. The caps will never fall out. the hole dimensions are exactly correct, so depending on how your printer is calibrated, the press fit will be very tight.
I added an outer cap if you want to cover the outer ball bearings. I have also changed the design of the centre cap slightly and added a new variant of the centre cap with an indentation making it easier to grip. The centre cap with indentation is also harder to print, use supports and try to print it up side down.