Im doing a single pass. 600 dpi, fill and getting deeper lines at the start of the job. As you can see here Im filling in a pumpkin and both times i get the deeper lines in beginning and then normal. It doesnt always do this, and used to be a lot worse and I just changed the focus lens and mirrors out.
Hey Jack. Sorry I got it figured out. My frankenstein project of a laser cutter had a unique issue with how my extra “air assist” was hitting from the front. I dont always use it and had too with this to get a cleaner cut. I put a bar above it with fan blowing directly down and now smooth cuts with no real noticeable changes.