@deckingman said in CoreXYU second extruder offset and stuttering:
@sharctic Just out of curiosity, does Cura add U and V values to the M201 commands? It just seems odd that you can control accelerations for all axes via Cura but not the instantaneous speed threshold (jerk).
No, it does not use M201 at all, but M204 which works independently from axis names. AFAIK, since T1 (U&V) is mapped to X and Y, the M204 command applies to T1 movement in that moment
Apparently , the M566 command works differently. Cura spits out M566 commands but only for Y and X axis. For Cura jerk control to work on my machine it would have to generate something like M566 X720 Y720 U600 V600 for example. However Cura does not even know what axis I'm using, there is no setting to enter the axis setup. I guess Cura just expects a single carriage with 2 nozzles, like the Ultimaker