Z-Axis Vibration Dampener for Robo3D R1 (8MM Smooth Rods)

My R1's Z-axis smooth rods tended to vibrate in the oval-shaped holes in the top of the case.

Originally put some rubber bands on the smooth rods to cut down on vibration.

Had a small sample of semiflex, so designed and printed some vibration dampeners.

Could probably also be printed in regular ninjaflex, or anything that has a flexible property to it.