The Prusa spool holders that are included with the MMU2, are not wide enough to hold 2,3kg spools.
This large spool holder fixes that problem.
You don't have to buy any new parts. Just print and use the bearings from the original MMU2 spool holder.
See photo for size comparison of different filament spools.
(measurements in cm)
Print 2 of these.
Print quick and dirty. Use the largest nozzle you can find, with the largest layer height. You can also speed up the print speed.
After printing, remove the supports.
Place the rod and bearings. (From the original mmu2 spool holder)
The author hasn't provided the model origin yet.