Laser suddenly giving erratic cuts on the y axis. running a ruida 6442g controller and JMC 2M542 stepper controllers.
If i make a box of say 3mm x 20mm and do multiple cuts in a single cut i find the dimensions change
3mm, 3.1mm,3.1mm, 3mm, 2.8mm
this can happen on any cut. I have checked the stepper controllers (even swopped around), belts etc. even changed the PWM to a rising edge in case that would work.
I can not pin this problem down.
Did you check if the pulley belt is correctly tighten to the stepper axle?
This suggests a mechanical problem and this test pattern helps identify the trouble spot:
Scale it to fit the platform and run it as fast as it will go in Line mode with optimizations turned off and power set to mark a sheet of cardboard.
Upload good photos of the result so we can look over your shoulder.
You are a star.
Currently testing on rdworks is it possible to send the file in dxf or AI
what is quite confusing as well is that when doing circle cuts i get almost perfect circles and no indication of backlash.
I think you can load & scale it in LightBurn, export the layout as DXF, import it into RDWorks, then set the laser speed & power.