MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.
For those wanting to smooth the mating surfaces for even longer spins than it is already capable of right off the printer, squirt some toothpaste in between the gaps & spin it for awhile, then completely wash the toothpaste out of it with warm water. The mild abrasiveness of the toothpaste polishes the mating surfaces for a smoother/longer spin. [ NOTE: I can't take credit for this hint . . . I got it from 3xploder0 (https://www.thingiverse.com/3xploder0) in the comments section of the "Gear Bearing" (https://www.thingiverse.com/thing:53451) ]