This is for use with the Printer-Box enclosure, to allow use of the RMU.

EDIT: 2022-03-20

Having a small break in the PTFE tube from the RMU to the MMU makes all the difference. I've included a photo of how I have it set up now.

I've designed these PTFE separator end caps to help hold them in place.

EDIT: 2022-03-12 

For this to work properly, it needs a run of PTFE from the RMU to the MMU. The problem with this is that it makes fixing a fault and loading the filament finicky. I have tested with short PTFE lengths from both ends but this results in the filament buffering before it gets to the RMU.

I will update this print when I find a suitable solution.