First time laser engraver here. Been watching the videos on the LightBurn YouTube channel and loving them. The first few times I ran my laser engraver, I noticed the edges were much darker than the rest of the engravement. I found a video that corrects this by using the “overscanning” function, which makes total sense. Problem is, even when I use overscanning, my laser slows back down right before it fires up and still leaves the edges darker than the rest of the engravement. Running a YoraHome 6550 with a 15,000 mW laser.
If you have an older version of GRBL that doesn’t support laser mode, this is standard behavior unfortunately, as any change to the spindle power will cause the machine to pause to wait for the “rotary tool” to change speed. You don’t have a rotary tool though, which is what “laser mode” is for - it tells the controller not to pause when the power changes, and to turn off the spindle during G0 moves.