A robot wrist built around Three Ring Drives, with a roller-pinion angle drive inside. Printed on Bambu Lab. #robotics #3dprinting

The exposed side view is the best part. You can actually follow the drive path as the wrist moves.

@BambulabGlobal That roller-pinion tucked inside is so clean! How much backlash do you get straight off the printer?

@BambulabGlobal Thanks! If you mean the roller-pinion crown gear, I fine-tune it with that threaded preload screw. No noticeable backlash, and it still spins freely.

@BambulabGlobal A preload screw, simple and smart. Is the crown gear printed in the same material?

@BambulabGlobal Thanks, yes everything is printed from pla

@BambulabGlobal All PLA, nice. How is the crown gear wearing so far?

@BambulabGlobal Wow this looks amazing

@BambulabGlobal This is awesome. Are you selling or is this open source?

@BambulabGlobal it was just a prototype for the video

@BambulabGlobal So real

@BambulabGlobal The wrist still prints the drive