I recently discovered the Move H-Together and Move V-Together function in Lightburn and was really excited about the material and time savings. If you’re not familiar, it’s great for cutting multiple objects that have parallel cut lines. If you’re cutting two squares…rather than cutting both shapes separately, you can move both squares together so they share a common cut line, thus saving time and material.
However, I am having some not-great results when using it. I am getting some rough edges. See photo. Can anyone recommend any settings that might cure this problem?
If the Y axis belts are loose or there is mechanical slop in the pulleys, when the laser is commanded to change direction, it’ll slip a little, because it has to take up the slack in the belts before the laser head will move the other way. If the X axis is snug and the Y axis isn’t, it’ll cause variance in the size of cut shapes. (see the video above showing the flat sides of shapes with backlash on)
Got it… I wasn’t applying the backlash issue to the Y travel.
The video is great… I don’t seem to have a version that will allow the backlash option – not a developers version as far as I can tell. It also didn’t advise where the backlash box it defined, as amount of backlash…
I think it’s a great tool and, even as a selectable option, it would be nice to have available. Graphics are pretty powerful when someone is explaining what’s going on and the user can relate to it.
Thanks… was hoping you were taking the weekend off and relaxing, again in error. Didn’t expect to hear from you until Monday.
The backlash visualizer is really just for us internally to see if that’s what’s causing a particular issue. I didn’t want to have to add user interface for settings, and it’s actually compiled out of the release build completely, because the code is non-trivial and slows down the preview.
