Is it possible for filament to get jammed in the MMU3 while printing?
 
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Is it possible for filament to get jammed in the MMU3 while printing?  

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(@tt-4)
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Is it possible for filament to get jammed in the MMU3 while printing?

I have a very odd problem with my Core One + MMU3.  There is one particular filament, Overture Matte White PLA, that appears to jam in the MMU3 during a print.  None of my other filaments, including Overture Matte PLAs of different colors, exhibit this problem.  I even swapped out the spool for another spool of Matte White PLA, and the problem persists, so it wasn't a one-off.

What seems to be happening is that the filament gets jammed in (or maybe near?) the MMU3 itself.  But if I stop and restart the print, everything is fine.  It's as if about 1/4th the way through my print, the MMU3 decides to lock up and print the filament from feeding.  In addition, there is never any "Stuck Filament Detected" error generated.  The printer just keeps trying to print as if nothing is wrong.

Has anyone seen anything like this? 

Posted : 01/01/2026 9:20 pm
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