Minimal PTFE Tube Guide

This fast-printing, minimal-material, no-supports PTFE tube guide clips onto the top of the frame to guide a continuous PTFE tube from a dry box to a PTFE connector on the extruder (like this reverse bowden cover: https://www.prusaprinters.org/prints/7978-prusa-mk3s-reverse-bowden-filament-sensor-cover)

The retainer clips onto the tube and slides into the guide where it can rotate freely to follow the extruder.

Print instructions

1) Print the assembly as oriented.
2) Snap the guide onto the printer frame.
3) Clip the retainer onto the PTFE tube. For smoothest rotation, make sure the opening in the retainer lines up opposite to the opening in the guide.
4) Slide the tube and retainer into the guide.