[Frankie] and [Bryan] have figured out a way to use the laser to chemically activate an etching process. See experiment part 2 as well. First, to be clear, they are using a quality 40W Epilog Zing ...

Using lasers to etch and alter the surface of the metal ... More information: Antibacterial effectiveness of laser surface textured metal on meat-borne bacteria, Journal of Laser Applications ...