i could achieve good results so far with lightburn on my neje 30w laser with my modded ender 3.
I just have two problems. The vertical line is thinner than the horizontal. Is this cause of the laser itself? I have the best focus i could find. Even tried with different heights with other focus values.
On first picture the .ai file was aligned with the same spaced. If i burn it, i get these differences.
The other problem i have is that the laser wont cut still the place it started. Like on the picture and even if i try to cut normal rectangles