Can I disconnect the MMU and just single feed the filament?
I have a Prusa MK4S with a MMU3 attachment. It appears that my selector motor has taken a crap so the MMU3 is out of commission. I still would like to print until I get it fixed. Can I disconnect the MMU and just single feed the filament to the printer until the motor arrives? Has anyone done this?
RE:
Yes, you can do that. Just switch off the MMU in the printer's display menu. Then you can feed filament directly into the nextruder. Either by pushing it in until the loading dialog appears (this might take a bit of force until it works, you can also push open the idler lever a bit for this) or by selecting Filament > Load Filament and selecting the filament type you want to load. Then the printer will load the filament.
I do this all the time. I use a "normal" MK4S profile in the slicer for this, not the MMU3 profile.
RE: Can I disconnect the MMU and just single feed the filament?
Excellent! Thank you! Got it working now!
RE: Can I disconnect the MMU and just single feed the filament?
I've recently tried PETG-CF, and I am worried about feeding this abrasive filament through the MMU3, so I also bypass the MMU3 when using this filament. Is this concern justified? I'm mostly worried about the PTFE tubing getting worn, but is it really not worth worrying about?
Prusa MK4 since Jan 2024, Printables: @MikeB_1505898
RE: Can I disconnect the MMU and just single feed the filament?
just thinking aloud here but I doubt it will hurt PTFE at room temperature and normal pressure. No actual experience, though,