Difference between revisions of "Project:PCB Making/Cupric chloride etchant"

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*[http://members.optusnet.com.au/eseychell/PCB/etching_CuCl/index.html Etching with Air Regenerated Acid Cupric Chloride]
 
*[http://members.optusnet.com.au/eseychell/PCB/etching_CuCl/index.html Etching with Air Regenerated Acid Cupric Chloride]
 
*[http://tech.groups.yahoo.com/group/Homebrew_PCBs/ Yahoo - Homebrew PCBs]
 
*[http://tech.groups.yahoo.com/group/Homebrew_PCBs/ Yahoo - Homebrew PCBs]
 +
*[http://www.instructables.com/id/Stop-using-Ferric-Chloride-etchant!--A-better-etc/ 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 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.

Revision as of 15:35, 6 August 2010

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)