The article David posted below is fairly technical, and calls for some
fairly expensive equipment. The Homebrew_PCBs Links also has a
"cookbook" approach which 1) outlines the chemistry of CuCl etching
simply and clearly, and 2) has simple, cheap methods to assess your
etchant and what it needs to have added.
http://www.pacificsun.ca/~robert/pcb/cucl.htmGrant
--- In Homebrew_PCBs@yahoogroups.com, "bnmj2000" <yahoo@d...> wrote:
> Hi all,
>
> For a slightly more scientific way of maintaining a cupric acid bath,
> may I suggest:
>
> http://users.rcn.com/rexa/Projects/CuCl_ech.html
>
> I'll also put this in the links page. if I can...
> Cheers,
> David