>From: "Phil" <phil1960us@...>
>Reply-To: Homebrew_PCBs@yahoogroups.com
>To: Homebrew_PCBs@yahoogroups.com
>Subject: [Homebrew_PCBs] Re: Regenerating etchant??
>Date: Mon, 15 Nov 2004 07:29:19 -0000
>
>
>
>--- In Homebrew_PCBs@yahoogroups.com, "Leon Heller" <leon_heller@h...>
>wrote:
>...
> >
> > Are you heating it? CuCl2 needs to be warm to work properly.
> >
> > Leon
>
>Is that a good idea? HCl has a bp of around 50C. I dont think HCl
>vapor is a good thing to have around.
If CuCl2 etchant is correctly made up, there will be very little free HCl
around, it'll all be in the form of ions. Similar to FeCl3 solution, that
contains a lot of H and Cl ions, but can be heated quite safely.
Leon
Leon