I did some programming a long time ago, but I’ve forgotten a lot of things now, so I still know a bit about what programming means
that wouldn’t make any difference
E.g. take a look at the rollers from a rotary here are 2 drive rollers
Now place a conveyor belt around these two rollers, then enlarge this to the working area size of the laser and this will result in a workpiece
That means the control for the stepper motor is the same (regardless of whether it is a rotary or workpiece feeder) and that in turn means that it makes perfect sense if Lightburn treats the U axis as an independent axis (as it does with X, Y, and Z the case is)