Prusa mk4 mmu3 behavior has changed after changing nozzle size
 
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Prusa mk4 mmu3 behavior has changed after changing nozzle size  

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DaveGadgeteer
(@davegadgeteer)
Eminent Member
Prusa mk4 mmu3 behavior has changed after changing nozzle size

I changed to a 0.6mm extruder, and now the printer is behaving differently.

It doesn't prime the nozzle before printing, so the first layer is awful.

It doesn't unload the filament at the end.

I must have bumped some parameter accidentally. Any suggestions?

Posted : 16/04/2025 11:29 pm
darkmattermaker
(@darkmattermaker)
Active Member
RE: Prusa mk4 mmu3 behavior has changed after changing nozzle size

I don't see 0.6mm profiles in Prusa slicer for the MK4+MMU3 combo. It looks like the 0.4mm is the only size with a stock profile. Did you select the non-MMU3 profile by accident?

Posted : 16/04/2025 11:35 pm
DaveGadgeteer
(@davegadgeteer)
Eminent Member
Topic starter answered:
RE: Prusa mk4 mmu3 behavior has changed after changing nozzle size

I think that's the problem. 

Now how do I add the MMU3 to it...

Posted : 17/04/2025 1:31 am
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