When I try to cut a simple circle , I have this effect of the photo, I used several settings without effect,do you have any idea what the mistake is ?
What does your preview show?
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The preview shows that it cuts a perfect circle
(AlthoughThe laser cuts square projects very well)
Interesting. Please post a screenshot of your entire Lightburn screen with your project loaded and the Cuts/Layers Panel and Laser Panel visible. Also post a screenshot of the Cut Settings Editor Window and post a screenshot of the Device Settings Window (Wrench and Screwdriver icon).
Turn off beginner mode, then show the cut settings editor again. Beginner mode is under the gears icon.
I forgot to mention, when I frame I have stellar result again, thanks
I would expect that. Framing would follow the extents of the cut not the actual shape.
Were both the cuts in the first post the same circle with the same settings? I’m not seeinganythingin your settings that would explain this. I was halfway expecting to see a negative kerf offset.
If you create a new file with a new circle do you get the same results, or have you only tried with thi one?
My picture contains two different attempts,two circles, one with a large and one with a small diameter,and it always happens the same
What happens if you try an oval? Same results or only with perfect circles?
Also, the one on the right, it appears to have a circle in the center with the points expanding out. How does the diameter of the circle in Lightburn compare to the inner circle or the points? In other words, does the circle in Lightburn correspond to the small diameter or the larger diameter of the points?
it appears to have a circle in the center with the points expanding out.
yes it is right
the circles are about the size of the gray area,oval shape I didn’t try,but I’ll try it
How does it work in fill mode?
I didn’t try it,I was desperate with the cut and I didn’t dare. 
Most likely is a machine problem than software . Thank you so much for your help.
Maybe, maybe not. One more question, did you create the circle using Lightburn’s circle tool or import from other software?
I used only the Lightburn circle shape, but I’m going to try a coreldraw import.
I was actually thinking there might be some artifact if created elsewhere. Oh, well.
That’s all I have, sorry. Have a good night.
Maybe someone else will jump in with an answer for you.
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