Another take on a Gyroscope Keychain. It's a print in place keychain. Modeled carefully (as can be seen on one of my pictures) to do full rotation and tested several times and iterations to be sure it would work for everybody.

The gaps are defined at 0.16mm and should work on every printer, atleast with the supplied Print Profile. On my P1S and another brand cheap printer i can go until 0.12mm and it still rotates but not as free.

My profile is with all the settings already tuned. If you change to your profile and it doesn't print correctly, don't post a bad rating. It rotates without a problem as can be seen on the small video here.