I’ve been thinking about cutting metals recently, stainless, aluminum etc. It’s long been established that it’s not possible to cut metal with a 45w laser cutter, but I’m not one to turn down a challenge!
I’ve etched PCBs in the past and, while it’s not possible to etch the copper surface with a laser cutter, it’s possible to use a laser to selectively remove a resist coating and then etch the exposed metal away with an acid. It got me to thinking, would the same be possible with 1-2mm sheet metals?
Granted, the copper on an FR4 circuit board is incredibly thin, but after searching I stumbled upon processes like deep acid etching which can etch thicker stuff. I’m wondering if anyone here has any experience with processes like this and if they’ve ever tried to etch clean through a piece of thin sheet metal. I’m happy to admit I’m pretty ignorant of metal etching processes, so I’d love someone to tell me why this is an awful idea, at the very least it’ll be a great learning experience