Our Epilog Legend32 is having problems engraving. When engraving plastic, the engraving looks like raised woodgrain – it’s not a smooth engraving anymore. Our other lasers are engraving fine and smooth. These “wood-grain”-like streaks do not appear when engraving the same material with our other lasers – it’s smooth and clear.
This is most pronounced when engraving reverse romark, or paint-filling extruded acrylic from behind - the "woodgrain" streaks appear white, even after cleaning.
Epilog suggested the following, which I checked: Optics are clean, alignment is good, focus is good, Settings are the same as before
I also noticed that there is a LOT more smoke residue when engraving on the problematic machine, compared to before.
Any suggestions?