THIS IS A COMBINATION WITH THIS THING HERE:
Prusa mk2 MMU1.0 angled Motor Holder - https://www.thingiverse.com/thing:3696898
i'm feeding my stepper motors from the side of my enclosure with some 6mm PTFE Tubes.
so i designed an adapter to attach the PTFE Tubes to the stepper motor holders.
i had to learn it the hard way:
if you're using the standard 4mm PTFE tubes, the inner resistance gets too high and your printer quality gets worse.
so i ordered 6mm tubes with 4mm inner diameter. that way even with a few step curves the filament has enough play.
to attach the tubes even better i added a small silicone tube between.
this resulted in the final 7.4mm version.
you may could achieve this my adding some tape between