Prusa MK3S MMU2S Extruder Idler door (debris opening)

thingiverse

A small change to the original or remixed design. The lower part was cut away. This part is of no need at all to the functionality. Reasoning: A perfectly well running MMU2s still needs service. One of those services concentrates on debris collected around the Bondtech gears. In my experience, depending on the quality of the filament, every 2000-4000 filament changes it is necessary to remove debris and filament dust in order to have the Prusa working properly. In this iteration of the idler door the gap between the housing and the idler door is increased, hence the possibility of some self-cleaning mechanism increased (increased, not solved). No negative effects were experienced so far. Debris falling down: In my experience it seems to be no problem at all. The debris might fall into the model itself and get closed in or sit on the heat bed. Bigger chunks are rare and it seems to be even rarer to have them falling out. A long-term test is still ongoing and might be concluded after XMas with roughly 30000 filament changes and 6-7 kilos of filament.