On a chinesse machine, good overall
but sometimes have issues. Like now.Metal cutting using O2 on 300w laser with MetalCut software.
The circles on top are ok, but oval on the back. Please see the attached picture.
I noticed that the laser beam shape is not round but oval. I admit that maybe the laser beam is not perfect perpendicular on the metal plate, but it is centered on the nozzle (1mm gap).
I also cut a piece of plywood 8mm to test, circle and square and they are ok, no slanted cuts. It happens only on metal cutting.
Also I cut a square on the same metal plate and the cuts are ok, not slanted. Only on circles or curves. And it happens from like the 0 (zero) point when change x to y and vice versa, I mean with a circle:
first quadrant slanted to exterior, the second kind to interior (not as hard as the first one) , third again slanted ext like the first one, and the forth like the second.
I suspect the beam shape ?!? I mean it is not x/y mechanical issue or like speed/acc ...I think.
Any suggestions are appreciated
English not my native language, sorry for mistakes.
Thank you for reading!
Hugo