K40 with M2
Summary: Everything seems to try to burn in the top 10mm zone of the y axis. If the image is larger than 10mm, Lightburn tries to move the laserhead above that section to continue burning but, of course, just keeps banging on the gantry.
In the video, I use Lightburn to burn a 5mm square so that its top left hand corner is at x1,y205. The burn works perfectly and in the right location. However, if I move the same 5mm square to x1,y100 in Lightburn, it burns the square at something like x1,y200. The second square burns the right size and shape - but it is in the wrong place. If you try to burn an image larger than 10mm, the laser head bangs on the gantry at the top, apparently because Lightburn thinks the laser head is where it should be (i.e., around x1,y100).
I’ve set the bed size to x300, y210. You can access pics, video and configuration files at https://www.dropbox.com/l/scl/AACmfqjLP3OY1UfN7sgvyunATBia4Dlku_U