is this the extruder doing?
It's the same whether wobbleX or RR oldham, so is this extruder or is it z motor tuning, or something else? Printed in ASA at .2 layer with .5 nozzle. Seems like a 2mm distance effect, or 10 layers.
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Using OrcaSlicer with Inner wall first and Arachne walls, seeing https://ellis3dp.com/Print-Tuning-Guide/articles/troubleshooting/bulging.html I'll change these and test
Removing Arachne for walls, printing outer perimeter first and 30% part fan constant did the trick
changed the couplers for rigid ones
fan to 30% constant (printing at ~40C enclosure temp)
no arachne walls but classic
and print outer layer first