Hello, I have a shuing type co2 40w laser engraver. I had been noticing some areas come out darker than others and when doing things with very fine detail, some areas of the workspace would be blurry, while others clear. I have since re-focused and cleaned the mirrors, so now all dots meet in exactly the same spot, howver the laser head produces and irregular shape when working :/ (pic attached) Why does it do this, and how can i corect it? thank you for any help!
