iraso
(Ira Sather-Olson)
January 5, 2026, 9:40pm
1
I’m having weird and inconsistent problems. Sometimes lightburn takes forever to start up when clicking on the icon. Sometimes when sending the file it shifts individual lines to the side. Not the whole image as if the camera is misaligned, but individual lines. Sometimes it doesn’t pick up that the laser is there.
Some of these issues could maybe be explained by an old USB cable, but I don’t think all of them would. If anyone has any suggestions I’m all ears.
jkwilborn
(Jack Wilborn)
January 6, 2026, 2:38pm
2
Ensure the memory of the Ruida is clear. Ruida cause strange issues when it runs out of memory.
1 Like
iraso
(Ira Sather-Olson)
January 6, 2026, 4:06pm
3
I’ll give it a try. fingers crossed. Every time I think I fix it it’s good for 2-3 days and then goes on the fritz again.
ednisley
(Ed Nisley)
January 6, 2026, 5:32pm
4
That is typically caused by communication dropouts trashing parts of the file, so the USB link is the main suspect.
If the USB cable is more than about a meter long, then it’s definitely the cause.
All of the problems you mention can be caused by bad communications, so:
WOO HOO !!! I got everything working right , FINELY !!! What was the problem?
It turns out to be the USB to Controller board cable was faulty. That was the only thing I failed to check and that was it. I have a bad habit of buying one to use and one to loose.
When I thought about the cable being bad, I got the cable out the spare controller kit and that one worked. I feel really stupid sitting here thinking how I spent 4 to 6 weeks crying and trying to fix this thing and never though…
However, for a machine with a Ruida controller, using Ethernet instead of USB cures a wide variety of problems:
Hi everyone,
I’m having a strange issue with my laser cutter and I’d love some help figuring it out.
As you can see in the picture (from top to bottom, it shows my first to most recent attempts), some letters are randomly missing or partially cut when engraving text. I’m cutting at speed 50mm/s and power 35%.
I’ve already tried applying an offset, and then used the Pathfinder tool (unite/merge) afterward — but there’s always a small issue somewhere.
What’s odd is that if I cut each letter in…
Hello. I’m new to the forum but have been using my OMTech 70W Co2 laser for a couple years. I’m wondering if anyone else has had an issue with the laser stopping after a few seconds. I was running a batch of stuff and as soon as I changed files, Lightburn said it needed to be updated (to version 2.0.02). I did the update and that was it. Every time I try to engrave, it stops after a few seconds. Nothing else changed except for the update. I’ve reinstalled old versions, rebooted everything, and n…
I am operating macOS Sequoia 15.5 on Apple M1 system. After installing v2.0.00 and trying to cut
the laser will jump and cut a line that does not exist on the workspace? I tried multiple times to cut different images and the same occurs each time. I did the update and the same issue.
I have reverted back to 1.7.08 and no issues. Any suggestions would be appreciated,
[IMG_8505]