They come with a led and a small battery, and they shine various colours. The logo seems to be laser engraved. I wonder if anyone knows what this ‘crystal K9’ is and if I can engrave it using my CO2 laser ?
Furthermore, it seems that they engrave the picture inside the crystal. Is it possible to do that, for example just by focusing the light in the middle of the crystal thickness? Or is it just 2 half crystals (one engraved) glued to each other? I doubt it though, because there would be some glue traces visible when it is lit…
I mean I see lots of people offering laser engraved K9 glass, but if they are are actually using a leaded glass they are generating lots of micro-fine lead glass particles. Would be a high safety issue to me.
I’ve engraved “ordinary” borosilicate glass without any complications, although I’m not equipped to determine if lead particles were released. When I engrave glass, I apply a dish soap/water mixture to keep fracture debris in hand and to cool the glass. Without the soapy water, the glass gets blistering hot.