Creality Junction for PTFE Tubes (Ender 3, CR-10, etc)

This is a bowden coupler I designed to allow for a junction to be placed between the bowden tube and the hotend.

Creality hotends (as well as any hotend with a PTFE -> Nozzle contact surface) suffer from a design flaw in that the PFTE tubing diameter shrinks with repeated heating and cooling over time (600+ print hours).

I've found it's cheaper in the long run to just replace the 8cm of bowden tube than to keep trimming down until the entire tube needs to be replaced.

You'll need 2 x PC4-M6 fittings to complete the line, and trim the hotend side doen to 8mm. I find it helps to flare the inserting end of the 8cm tube with an x-acto knife to aid in loading.

Best fittings on the market: https://www.captubes.com/shop/#!/Creality-Fitting-Pack/p/114327629/category=33913105

Enjoy!