MMU2S MK3S Extruder Idler with bolt
Free     Printables     John Lafferty of Yellowbox Shed

MMU2S MK3S Extruder Idler with bolt

After assembling my MMU2S and upgrading to the MK3S I had a lot of problems getting the filament to load ...

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MMU2S MK3S Extruder Idler with bolt alternatives