625 Bearing

Disclaimer: this one is stupidly hard to print, don't expect it to work. But when it does it spins surprisingly well

Settings:

• bambu x1c
• 0.08mm layer height
• outer wall speed: 40mm/s
• inner wall speed: 100ms/s

The common problem is rollers falling off halfway through the print. Make sure the bed is clean and the print speeds are slow. 

Redesigned from scratch, used different parameters for clearance and wall thickness. The idea is the same - use rollers with a single groove in the middle