PTFE adapter for printed solid enclosure

Update

I made a second design that I like better: https://www.printables.com/model/433088-printed-solid-filament-guide-mark2. Keeping this design posted on the off chance someone references it for some reason.

Mark 1 design

Before and after videos of the project (sound on) https://imgur.com/a/Bv0gyx9.

I have a printed solid case. The filament rubs on the hole into the case and makes an awful noise. I fixed this by adding PTFE tube (with couplers) to guide the filament to fix the noise.

Extra materials needed

• 1x - PTFE tube (aka bowden tube) cut to lengths
• 2x - PC4-M6 Couplers: thread M6/3mm, inner diameter 4mm (came with my bowden tube kit)
• 1x - M6 Threaded Inserts for Plastic Brass Insert 12mm long 7mm diameter (bought a variety pack on Amazon)

Assemble

Use a soldering iron to push the threaded insert into place, then attach a coupler to each end of the insert. Cut tube to desired length and insert into each coupler.

Print

I printed in PETG as I want a higher temp resistance. 

Notes

If your holes on the corners don't line up perfectly with your case you can widen them with a drill bit. After insertion with soldering iron I had some extra plastic that needed to be trimmed with a knife and flush cut pliers.

When cutting the interior PTFE tube make note of the height of your printer at max z.the 

This is the specific enclosure: https://www.printedsolid.com/collections/next-generation-enclosures/products/next-gen-safety-enclosure-for-prusa-style-printers the “Next Gen Safety Enclosure for Prusa Style Printers”. I am using the Next Gen Adjustable Spool Roller Kit as well.