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I have also been having this problem and have figured out that the fan settings aren't being translated to the machine properly. When I start the print in the 'tune' setting the fan is at 0% even though it is 100% in Cura, I have found manually raising that to 100% in the tune setting solves the heat creep/clog issue.
Filament feeding stops after a few minutes of printing - UM3
in UltiMaker 3D printers
Posted
I have also been having this problem and have figured out that the fan settings aren't being translated to the machine properly. When I start the print in the 'tune' setting the fan is at 0% even though it is 100% in Cura, I have found manually raising that to 100% in the tune setting solves the heat creep/clog issue.
Good luck, hope this helps!