I made this set of laser etched glasses as a gift for a family member. The family crest is on one side, and the first letter of the last name is on the other. I had to use a rotary attachment to the laser etcher to accommodate the curve of the glass. It always takes a little bit of time to resize the artwork so that it fits on the glass in the way that you imagine. However, after I got started each glass took about 6 minutes, which wasn't too long. I was pretty happy with how it turned out, although, if I were to do it again I would try to get a crisper image quality on the crest.