Thanks Stefan. This is the first time I've heard not to use a heater.
I recall reading somewhere to heat the CuCl solution so its a little
confusing. I looked for the page that said that but couldn't find it
since I didn't bookmark it. It might have been one that talked about
using CuCl salt, though.
I guess technically, this is HCl etching at first and then CuCl.
A How-To for HCl and H2O2 etching would be very useful.
Phil
--- In
Homebrew_PCBs@yahoogroups.com, "Stefan Trethan"
<stefan_trethan@g...> wrote:
...
>
> NO DO NOT USE A HEATER!!!!!
> The boiling point of HCl is VERY low, and even below the fumes increase
> dramatically with heat. I experimented with that and don't want to
repeat
> the experience. Use a bubbler or mecanical movement/oscillation of the
> board.
> I'm still wondering if high frequency vibrations or even ultrasonic
would
> be a
> good idea.