Ran into a strange problem tonight while cutting out some acrylic with LaserWeb. I loaded the SVG file in LaserWeb, set my speed and power level and generated the gcode. It rendered correctly o the screen, but when it started to cut on my K40, a row of holes in the drawing shifted out of line by about 50mm towards the top and a rectangle cut out shifted about 20mm to the right. I have never had any issues before. I reran the Gcode generation, and once again it rendered on the screen correctly, but offset the holes and rectangle again, but by a different amount. his one has me stumped. Any thoughts +Peter van der Walt ? Not sure if you want me to open an issue on github, let me know. BTW, I loaded a different SVG and it worked correctly, so I have a feeling it has something to do with the file, but I checked, all objects are paths, nothing out of the ordinary that I can see.
Which board are you using?
I am using a Smoothieboard 5x
I’ll check the belts. Hopefully that is all it is. I am going to redraw the file, and try that if the belts are OK.
I recently had this happen on my K40. It turns out I had my fast travel rates set faster than the machine could handle (mine is a RAMPS based conversion * boo - but it was state of the art when I did it). I traced it dow o this because it would only happen on the longer moves where it had a chance to get going fast enough that the machine/stepper drivers couldn’t keep up.