Prusa i3 mk2s, Vibration Damping Z Axis Top Guides

This is a Z-axis top left and right set with a vibration damping O-ring.

The O-ring is a #48 O-ring (5/8" OD, 3/8" ID, 1/8" thk, available at any hardware store plumbing section)

The Z-axis threaded rods will rest against the O-rings instead of plastic on the stock Prusa guides. This removes the noisy vibration when the Z-axis threaded rods occasionally light up from machine vibration.

The geometry of the O-ring still allows for the threaded rod to float inside of the guide, which I gu