MMU Over Extrusion
I am struggling with getting consistent top layers with my MK4 with MMU3. This seems to be a recent problem as I wasn't having this problem before the last few weeks. I have tried modifying the extrusion multiplier and several other settings. It has so far made no difference, does anyone have a reccomendation for how to fix this that isn't manual labor?
RE: MMU Over Extrusion
Set everything back to default and then try increasing the retraction from 0.7 to 1.4. That should get rid of the blobs. Also, make sure your filament is dry.
MK4S/MMU3
RE: MMU Over Extrusion
Thank you for jumping in, but I had already tired that in the trouble shooting process. It didn't help with the over extrusion on the black, and there was under extrusion on the green either way. It turned out the problem was the ruby nozzle I had set up in the printer to try to deal with some abrasive filament that has been wearing through my brass nozzles. I have switched to a diamondback and all problems went away. Moral of the story, don't bother with Ruby nozzles.
RE: MMU Over Extrusion
Glad you got it working! I use obxidian 0.4 std with my 4s & mmu3.
MK4S/MMU3