Hey Gordon, just wanted to let you know that you can indeed do it like you said, spray painting the board, burning away the paint, and then etching as normal.
Ben Heck (Google him, do it, he's amazing) used that method in his PCB etching episode
, and apparently it's a really reliable way to get crisp etchings.
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
Hey Gordon, just wanted to let you know that you can indeed do it like you said, spray painting the board, burning away the paint, and then etching as normal.
Ben Heck (Google him, do it, he's amazing) used that method in his PCB etching episode
, and apparently it's a really reliable way to get crisp etchings.