It engraves wonderfully, although it is a bit dusty and messy. It would seem that the laser vaporizes the binding resin that holds the solids together, but does not obliterate some of the fine solids which results in a chalk like substance everywhere. One word of caution it is the single stinkiest thing i have ever engraved. I don't even know how to describe it but even with it vented outside it is quite horrible. My garage stunk for a day after I did it and my wife could smell it out in the back yard and chewed me out. It does turn out perfect though! Good luck.