Originally Posted by IrregularPulse
Try bringing the laser up a bit out of focus. This is how you can achieve a nice dark mark without burning into the material. it is a smooth to the touch mark. High power slow mark speed. Co2's are best for organix materials and aren't the best for metals but the 50W should have enough power. They work great for thing's like ceramic, rubber, wood, stone...
how far out of focus do you recommend? for the versa laser, you type in the thickness of the material. I can then add a certain amount for "out of focus". We usually use this laser for cutting paper and wood, so Yeah, it's not the best for metal, but works if there is a coating on the metal like anodized.