PFTE Holder for MMU3 Spool Holder with Filament Cutout -- Minimum Support

*UPDATE - 28 Jun 2024 - I had an issue with the Bowden tube slipping inside the holder as a result of the cutout for the filament.  I've added a very slight obstruction so that the tube can't slip towards the filament roll.

This may seem obvious, but I can't tell you how many times I've threaded the filament through the PFTE… and THEN remembered the PFTE tube needed to be attached to the “holder” first.  Too many. 

Thus this remix with a 1.75mm cut into the tube holder so when you forget, you can just put the filament into the cutout and keep working without complete removal of the filament from the tube and starting all over again.