John, thanks for posting that. It has a lot of good info.
I have been wanting to try a CuCl2 setup but had to wait for summer, when classes are over.
Aaron
--- In Homebrew_PCBs@yahoogroups.com, "John Anhalt" <janhalt@...> wrote:
>
> I just added a text and MHT version to our files section: Seychell_Cupric Chloride
>
> John
>
>
> ----- Original Message -----
> From: Aaron
> To: Homebrew_PCBs@yahoogroups.com
> Sent: Tuesday, May 08, 2012 3:25 PM
> Subject: [Homebrew_PCBs] Re: Long-Term CuCl2 setup
>
>
>
> > Whether the copper is oxidized to Cu^+2 can be determined
> > by color. I just bubble air until all traces of brown/mud
> > are gone as per Seychell's instructions.
>
> He had a great web page describing the process but it seems to be down. Does anyone have an archived copy of the page?
>
> http://members.optusnet.com.au/~eseychell/PCB/etching_CuCl/index.html
>
> It covered how to determine optimum pH, specific gravity, temperature, etc and was probably the most thorough coverage I have seen given to the topic.
>
> Aaron
>
>
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>
>
> [Non-text portions of this message have been removed]
>