I’ve reported to the Lightburn support team an issue the new version. This is for Ruida controller.
If you are using 0.9.9 and have Z enabled but not “relative Z moves only” änd material height is “0”, the bed will move up crashing on everything above. I found out on the hard way after upgrading it and changing jobs. One job completed on 0.9.9, I’ve updated to 0.9.10 and then was testing focus to change job. I test the focus with manual height changes, not the automatic option from Lightburn.
Anyway, as soon as I hit start, the engrave part happened fine with Z height change, but on the cut which was meant to go down -4 and the bed gone up instead without stop. It smashed on the head/nozzle, pushing the nozzles(150w and 80w) all the way in. I was quick to turn the machine off as STOP button does nothing as this case, it just doesn’t stop.
I was lucky as it seems not damaged has been caused to the bed, nozzle/head, Y axis, only the material got damaged, which was a scrap piece anyway.
Just as note, the material height was set to 0 as I don’t use it for automatic focus as I have more issues with focus then anything else when adding extra variable. To keep it simple, I always do manual focus and I don’t use the material height value.
The only way I could fix this issue was enabling “relative Z moves only” on 0.9.10.
So, be aware when upgrading…