Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

Theres another link on that page ..
http://members.optusnet.com.au/~eseychell/PCB/etching_CuCl/index.html
Titled :
Etching with Air Regenerated Acid Cupric ChlorideAnd its got some great info too
.. :)

Randy




________________________________
From: Norm <w6nim@...>
To: Homebrew_PCBs@yahoogroups.com
Sent: Mon, February 28, 2011 1:32:03 PM
Subject: Re: [Homebrew_PCBs] Re: Question for the chemistry majors !!

On 2/28/2011 9:05 AM, Randy S. wrote:
>
>
> Where do I purchase 30% H2O2 ?
> I
>
Beauty shop/professional hairdresser suppliers carry it.
As to disposal, bubbling air through it, or adding a bit of HCl seem to
rejuvenate it - no need to dispose of it. Do a Google on copper
chloride etch - e.g.:

http://www.instructables.com/id/Stop-using-Ferric-Chloride-etchant!--A-better-etc/


Norm
W6NIM

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