Project:PCB Making/Cupric chloride etchant

Ferric Chloride is convenient for small projects, but it is used up and disposal is a pain. An alternative is an etchant that can be regenerated by adding HCl and bubbling air through it.

• CuCl etching
• Etching with Air Regenerated Acid Cupric Chloride
• Yahoo - Homebrew PCBs
• A better etching solution (Instructables)

I understand from some sources that adding HCl to Ferric Chloride will also regenerate it and eventually the etchant changes to CuCl as above. I don't know how carefully that procedure needs to be managed, or whether it's better to start directly with the CuCl bath.

I've set up a bath using this system but still need to get some experience with it. Poke me for details. --Artag 13:00, 21 July 2010 (UTC)