Prusa Multi Material (MM) brackets for overhead filament spool feed i3 MK2s

thingiverse

Human: Add brackets and pulleys to enable overhead filament spool feeds, similar to those found at thingiverse.com/thing:1332025, to be used with the Prusa MM kit, which expects spools to be positioned behind the printer. These components utilize the bearings and aluminum tubes provided with the MM kit for the spool holder assembly. To assemble these parts, you will need to print a pair of brackets and two pulleys for dual-material printers or two pairs and four pulleys for quad-material MM printers. Brackets feature holes for filament passage before it wraps around the pulley and enters the extruder feed. A square M3 nut is required in each bracket's slot, along with approximately 30mm of M3 screw to secure (four of each are needed). The original bracket design was adapted from thingiverse.com/thing:485438.