Kinda sounded to me like you get that CuCl precipitate that you need to
remove manually, either by agitating a lot or by scraping it off (like the
FeCl "wipe" method). Plus maybe you want to try more salt.
As I have a long way to go before my jar of persulphate is exhausted, I wont
be personally exprimenting with this one yet, but that's what I'd try.
PG
On Thu, Mar 10, 2011 at 6:01 AM, Andrew Volk <amvweb@...> wrote:
>
>
> Ah! About that curious cat, satisfaction brought him back!
>
> Andy
>
> _____
>
> From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com]
> On Behalf Of RJ
> Sent: Wednesday, March 09, 2011 9:58 AM
> To: Homebrew_PCBs@yahoogroups.com
> Subject: [Homebrew_PCBs] Re: Vinegar, Salt, Peroxide Etching
>
>
> Thanks Rolland ..
> I wondered about that ..
>
> I am also going to get a bottle of that
> peroxide / phosphoric acid mix at the beauty supply.
> Just to try it on a scrap board .. outside per chance there
> could be bad fumes .. lol just to see .. am curious ..
> and at 3.00 a bottle .. cant hurt .. I guess thats why I like ferrets ..
> allways curious about things .. and yes .. I heard what happened to that
> curious cat.
>
> Randy - N2CUA
>
> --- In Homebrew_PCBs@yahoogroups.com
> <mailto:Homebrew_PCBs%40yahoogroups.com> , "Roland F. Harriston"
>
> <rolohar@...> wrote:
> >
> > Javaguy:
> >
> > I think it works like: the peroxide "oxidizes" the copper, i.e.
> > decomposes it,
> > and the muriatic acid dissolves the decomposed copper.
> > I think the vinegar (acetic acid) would probably work, but it would
> > have to be a very strong vinegar. Household vinegar is about
> > 2 or 3 percent acid.
> >
> > Someone will certainly correct me if I am wrong.
> >
> > Roland F. Harriston, P.D.
> > ∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗
> >
>
> [Non-text portions of this message have been removed]
>
>
>
[Non-text portions of this message have been removed]