Comment by at_a_remove

This is a great overview.

A few years back, when TechShop still existed and was open, I made a present for my mother: a glass laser-etched and engraved with an image from her favorite comic. Because the comic was painted in a set of watercolors, this was going to be difficult. I ended up tracing the lines (for the deeper engraving) and then stomping on the color palette for the etching. Finally, I settled on different newspaper halftone sets for each "color."

It took several tries for it to come out alright. This might have saved me a few runs.