Project talk:Deactivating a ferric chloride solution: Difference between revisions
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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. | 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. | ||
*[http://www.xertech.net/Tech/CuCl_ech.html CuCl | *[http://www.xertech.net/Tech/CuCl_ech.html CuCl etching] | ||
*[http://members.optusnet.com.au/eseychell/PCB/etching_CuCl/index.html | *[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] | ||
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 20:16, 26 May 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.
