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Broken filament

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I noticed a strange behaviour on the Ultimate 3 extended: if I change de printcore 1 (unload function) the feeder of printcore 2 retract the filament (1 cm back) and of course, the filament is than broken (sure, the extruder 2 is cold...)

Does anybody already have this problem?

Thanks in advance,


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I have not had that behaviour. But I never change Print Core 1 as it is always used for non-PVA materials. That is just me though.

May I ask why you would be changing the Printcore 1?

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