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Breakaway clogs AA0.4 continuously


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Posted · Breakaway clogs AA0.4 continuously

Hi,

we have a Ultimaker 3ex and I was trying out the breakaway, with cura 3.4 standard profile for PLA AA0.4 and breakaway AA0.4. First prints were stunning, but after there was a longer pause for the breakaway print head during a print, it converted to a brownish sticky goo that clogged the extruder. After immense cleaning efforts remainders always keep coming back and ruin the print and head. Two trashed heads already, so I'm not very happy. It reminds me of flex material on my Prusa MK3, when you exchange with ABS afterwards and brownish spots keep entering your print, like flex can hide in some pocket of your extruder. Interestingly the same happens if I choose PVA with BB0.4 and have the support infill printed by the other printhead. Always messes up my BB0.4 with burnt PVA. Am I missing something?

 

Chris

 

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