Hardware needed:
(5) M3x6
(2) M3x4
Print needed:
(1) Outside PTFE Mount
(1) Inside PTFE Mount
(1) Mounted Link
(1) Starting Link
(~25) Links
(3-5) PTFE Links
(~30) Clips
(1) Ending Link
(1) Extruder Mount
(1) PTFE Guide
Use baseplate tree supports and a brim for the Extruder Mount, but everything else should print fine without a brim or support, ready to use.
If your chain is sagging too much, like from the PTFE tube pushing down on it, Ulli came up with the great simple idea of putting a large ziptie in the chain with the cable. It really stiffens the chain up and keeps it from sagging.
Credits: I made heavy modifications to Gabor Penoff's chain link model to greatly increase strength, function, and printability. I made very minor changes to thrutheframe's PTFE passthrough to mount the chain. I included raeuberhose's PTFE guide and MediaMan3D's cable guide for the extruder so all the files you need are all together
The author remixed this model.