Project:PCB Making/Cupric chloride etchant

From London Hackspace Wiki
Jump to: navigation, search

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.

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)