Ok, maybe a weird one… anyone tried etching and cutting FR-4 PCB boards? I am curious if a K40 can etch (eat) into the copper far enough to cut out traces, then obviously cut through it to cut out the PCB?
I’ve been wanting to buy a PCB mill, but they are super expensive and i have a laser cutter - surely I can cut my own PCBs?
I’ve seen videos on youtube of people spray painting their copper boards black and engraving the black off, so they can finish the board with Chemical Etching but that’s not what I am wanting to do.
I want to actually cut far enough into the board to remove the copper and leave the fibreglass, kinda like what this video shows as an end product…
I mean I’m happy to buy some board and try… but I am worried that hitting the copper with the laser might be dangerous