Wall Spool Holder with PTFE holder for MMU3

I love my MMU3 but I am not a fan of the new spool mounts. You have to adjust the wheel spacing for every spool width change, it doesn't do well with bent cardboard spools, and it doesn't even fit some spools.  All that and it doubles your table space over just the printer alone.  

Solution: mount it on the wall!  I took the Voron design spool holder and redesigned it to mount on the wall and added the MMU3 PTFE tube holders.  I chose the Voron spool holder as the 608 bearings should minimize drag.  Note if the bearings spin too smoothy, there are printed 608 bearings available to slow things down a bit.  I modified the bearing cap mount to use M3 screws directly into the PLA, though a version for heat set inserts is provided (M3 x 8mm recommended).  I used #8 x 1-1/4in screws to mount it to the wall, it is what I had on hand.

Note: the letters on the Bearing Caps are done using text modifiers in PrusaSlicer.  You can easily change the font to suit your style, or remove them if you are using this for another purpose.

PARTS LIST:
- 10 x 608 bearings
- 10 x M3 x 8mm screws
- Screws for the wall

If you need additional PTFE tubes, remember to use 4mm OD with 2.5mm ID tubes as recommended by PRUSA for the MMU3.

Redesigned mount for a wall with the addition of a PTFE holder