Why m I getting an over burn at the return of a Bi-directional function?
Probably because the machine cannot reach the 8000 mm/min speed in the 3.33 mm distance allowed by the 2.5% overscan.
The doc goes into more detail:
The RepRap calculator suggests the machine must accelerate at 3000 mm/s² to (barely) reach that speed in that distance. You can check the acceleration setting in LightBurn’s Machine Settings, although many of those settings seem aspirational at best.
Could be but I did tuen everything down according to my “engrave test on the sam material.
A picture will help us see what you’re seeing and uploading the lbrn2 file will let us check your settings.
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I appreciate the response but I figured it out with a friend of mine who owns a laser business. I had the overscan % to short which didn’t allow for the laser to cool off or shut down before it’s next fill path.
Exactly:
Making the overscan region larger gets the laser head up to speed before reaching the image and lets it slow down beyond the image.
This only works with scanning operations, not vectors.
There appears to be some kind of mechanical issue for the scroll to look like it does. Especially with a scan operation.
It looks like a cut through the wood around the (2.5% overscanned) scroll, but without the lbrn2 file it’s hard to tell whether it’s an artistic flourish or good old backlash.