Laser cutter drift - help would really be appreciated

[ednisley]

@Jase

what to check to find the issue

This may be another example of the Ruida PWM Rising Edge Valid configuration gotcha. It’s entirely possible for this problem to arrive from the factory / seller and lie in wait until the machine sees exactly the right sequence of commands.

A previous discussion lays out what to do:

Image shifting and bunching up but cut out is OK

Red-Black 90w Laser Ruida controller engrave 400mm/s 25% Fill 450mm/s 20% Cut 25mm/s 65% Birch ply held down pins belts are tight so are stepper motors When doing a engrave/fill and cut I get the fill shift while the engrave bunches up, cut out in just fine. This is repeatable, and all come out the same, like it was meant to be, how do I attach image?

TL;DR: For most machines, both the X and Y axis PWM Rising Edge Valid switches should be False, so if they’re either True or different, that’s a clue.