Extruder assembly for Prusa MK3S/MMU2S only with path through festo coupling PC4-01.
Simplified filament feed and smoother path, the filament entry is part of the extruder motor plate, (no fs cover-mmu2s, no printer-adapter-mmu2s). Ir sensor holder with one side attachment on the extruder motor plate, (can adjust Ir sensor holder with washers on this side). Optional modified x-carriage. Optional extruder-cover with extra bottom attachment.
Added mod that solve the noise generated by the bondtech gears during filament change process on the MK3S/MMU2S.
This mod add a second tensioner screw to re-center pressure in line of the filament pass.
Use the previous MK3 extruder tension springs (soft), don't mix them with the MK3S single spring (hard).