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

--- In Homebrew_PCBs@yahoogroups.com, lists <Stuartlists@...> wrote:

>
>
> Yup, most fixers in use are "acid-hardening".
>
> Is it "slower" than the fixer you were using previously, which might
> suggest Sodium rather than Ammonium Thiosulphate?
>

Don't really know. It wasn't very obviously slower, though. About one minute in the fixer at a 1:4 dilution, and all the white was gone.
I left it in for two minutes just to be sure the fixing was completed.

Jon