MK3S+ forces filament out when approaching the print after filament has run out
 
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MK3S+ forces filament out when approaching the print after filament has run out  

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Xsis
 Xsis
(@xsis)
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MK3S+ forces filament out when approaching the print after filament has run out

Hi!

My MK3S+ unit behaves quite oddly when the filament has run out mid print. After I have changed fresh spool and MMU3 has fed it to extruder and I have set that filament is changed correctly,  the extruder forces filament out so hard that the extruder starts  skipping when moving towards the print. It leaves nice thick  line from front right corner, where filament change took place, back to the print. And also leave big blob of filament side of the print. This started to occur after I installed the MMU3 unit to my printer. I have latest firmwares in both units. The printer and MMU3 works fine otherwise, no under/over-extrusion, not a single jam after MMU3 installation. And this doesn't happen when MMU3 changes filament to other color, only when the filament runs out.

Posted : 12/04/2025 7:15 am
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