Of course it can’t BUT after experimenting I did get a result that I wasn’t expecting.
Wow, Care to share your settings?
Beautiful! Nicely executed.
For my laser I used 1500 mm/min, 90% power, 204 DPI and imaged mode was Jarvis, but the trick was to put some black card under the glass, the laser did not engrave the top of the glass but burnt the image on to the card and lightly etched the under side of the glass. I simply placed some plain white paper behind the glass after it was finished and was amazed by the result