(Another) filament spool holder for Prusa Mini+ (and similar).

It is mounted on the vertical axis of the printer using two T-slots (models provided) and uses two bearings from the original Prusa Mini spool holder (inner diameter 8mm, outer diameter 22mm)

Only other thing required is 8mm rod. I used 8mm aluminum rod but it probably can be printed too (haven't tried it).

Even though it has screw holes for fixing the bearings and aluminum rod, everything is friction fit together so no tightening screws are needed.

There are two variants of T-slot models: one meant for M3 threaded insert and another made for standard M3 nut.

Assembly:

1. print the required parts: spool holder, base, stopper, two T-slots (either threaded insert or M3 nut variants
2. press fit the aluminum rod/pipe (8mm diameter, 90mm long) into the base. Model is also provided but I haven't tested it for strength
3. mount the base onto the vertical aluminum profile using T-slots
4. press fit two bearings into the spool holder, around 10mm into the spool holder
5. press fit the stopper onto the rod in order to prevent the rotating part to fall off