The standard go-to solution is ferric chloride. It isn’t too tricky to ... although you can get it in dry form. Another common etchant is ammonium or sodium persulphate. There’s also a variety ...

If you’ve done any PCB etching at home, chances are pretty good that you’ve at least tried the old standby, ferric chloride. It’s cheap and easy, and has a lot of advantages over other wet ...