I scaled it down (90.56mm outside) to fit a Large Fidget Spinner (thing:2386446) that I scaled down by 35% to fit a 300x300mm bed. I didn’t want to use the default support on the bearing STL file because scaling it down made the support look like it would fuse to the ball bearings. I loaded the STP cad source file (Thanks for that!) into fusion 360, that did not have support on it, and just saved it as an STL. Interestingly, I had to run the new STL file through 3D Builders so that it could automatically fix the STL after the export from Fusion 360 tO get all the balls to slice. For the slicer, I used Cura and reduced the Support Z Distance to 0.2 mm to get it closer to the object so that the ball was more circular(That worked great). I also set the Support Join Distance to 12mm so that all the support under the balls would get joined together to help the support stay together and in place (similar effect to the original supports in the original STL file as they were joined).