I have a Creality Falcon pro 10W laser and just updated to Lightburn 1.7.08. As soon as I updated, my machine will engrave just fine but will not cut circles at all. They come out oval and the start and stop points do not line up. I calibrated a 100mm x 100mm square and it came out perfect but immediatly cut a 85mm circle that was off. It wasn’t even what I would call a circle. I have cleaned everything, checked calibration. What am I missing? It did absolutly perfect before the software update. Thanks for the help.
This is almost certainly not going to be related to the upgrade itself. You can try downgrading to put your mind to rest if you’re unsure.
For the circle that’s coming out as an oval, what does preview show? Does it look correct?
Please provide the following:
- Full screenshot of LightBurn with the circle showing and ready to burn
- Photo of the oval in the orientation that it was burned
In most likelihood this will be a mechanical issue, especially if the ends are not lining up. The information above should help narrow that down.