Hey, I have a colleague who is interested in using a laser to cut a design into a resist for copper etching. Something like this: https://www.youtube.com/watch?v=OTGZcY7WyYI only with FeCl, but that’s beside the point for this post.
The MSDS for Krylon flat black primer https://www.krylon.com/document/SDS/en/US/724504016021 lists CO2, CO, and metal oxides as the decomposition products. The listed ingredients are all chlorine free. The metal oxides would be coming from the small amount of magnesium in the talc. Is this a thing we could reasonably do on this laser?