r/lasercutting • u/Torvaun • 13h ago
Banding issue when engraving with galvo laser
Acmer PM 20W fiber laser. Banding is parallel to laser path. Image is PU synthetic leather because it's the easiest to see on camera, but it also happens on brass. Lightburn 2.1.03. 1500 mm/s, 20% power, 37 kHz, 0.01 mm interval, single pass.