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Filament getting chewed up them jamming  

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jd14
 jd14
(@jd14)
Active Member
Filament getting chewed up them jamming

I think I finally starting having successes with printing and was trying my first MMU2S multiple (2) material print...I was printing the sheep...about 50% of the way through, it kept jamming.  I finally took the filament out an found it was chewed up by something.  I cut this portion off then it worked for a bit longer then had another jam, same thing.  Any ideas what is causing it?

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Postato : 10/09/2019 12:59 am
JMH714
(@jmh714)
Estimable Member
RE: Filament getting chewed up them jamming

I think I might know why. The IR sensor/Chimney might have moved that messed up IR sensor. When I was trying to "calibrate" my IR sensor while tight the screws and I noticed that the IR sensor in "sensor state" flicking 0 and 1 that may confused the communication with MMU2S. 

A question: when it got jammed and started to chewing the filament - is the MMU2S rolling backward as it was going to eject the filament while extruder's pulley trying to roll towards nozzle? That looks like it's doing tug of war - that caused it's scrapping the filament like picture shown.

That was what I'm having problem right now. I've contact the support and they gave me the link: https://help.prusa3d.com/article/wprwemqsmj-ir-filament-sensor-calibration

I don't know if it will fix your issue, but can't hurt trying. 

Postato : 14/09/2019 1:19 am
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