It appears laser does not have this feature? Is there an alternative way to prevent over burning edges?
It only works in fill mode, thatās why you do not see it, sorry
No, she has a machine with a Ruida controller, thatās why sheā doesnāt see it. Overscanning is taken care of internally by ruida and the user doesnāt get to mess with it.
Lucie, can you show an example of burning edges?
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If she has a Ruida, she should be able to set a min power to prevent that burning as the the hardware is designed to vary the power between max and min as the machine changes speeds to corner or change directions.
That burning is not related to over scanning, which is handled by the hardware and generates the infamous āslopā error if the object is too large for proper over scanning at that speed.
I noticed the device is an iLaser, forgive my ignorance, but is that setup for the Ruida? You should have a minimum power setting available in the cut parameters which I donāt see. Is Lightburn configured properly?
This is an engraving, but itās the same window:
When raster scanning the Ruida controller only uses the MAX power.
Since it āoverscansā well past the burn area thereās no need to reduce the power as it approaches the edge of the work.
Thatās why Iād like to see an example of her burnt edges.
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I never tried to imply that minimum power, was used during engraving, only that she can set it to deal with the two issues I stated. Sorry to anyone whom I mislead. I saw and thought, a line drawing, so I assumedā¦ 
Ditto on the images.
@Hank is correct, the Ruida motion controller manages fill / scan Overscanning internally, and is inaccessible from software. This is why you do not see the option.
@Lucie, yes, please share a picture of what you are seeing. What type of material are you cutting? Are you using Air assist? Do you see flair-up when the job is running?