Kobra 3 Crossbar PTFE Guide

Wanted a guide to keep the PTFE from the left or right side of the printer. There are a number of variants out there, but the ones I liked required removing the top gantry bar and I just didn't like the idea of doing that since it monkeys with belt tension. This uses M3 hex-head cap screws for the hinge and also to hold the clamp in place. The PTFE tube can move freely in the guide and the full extent of the extruder/print head range of motion is supported.