You might want to test the chunks for compatability with your
etchant too, the HCl I'm using to brew CuCl just disintigrated mine!
Stan
--- In
Homebrew_PCBs@yahoogroups.com, "Stefan Trethan"
<stefan_trethan@g...> wrote:
> On Thu, 01 Sep 2005 23:27:29 +0200, lcdpublishing
> <lcdpublishing@y...> wrote:
>
> > I picked up a fish tank pump and a container that should be good
for
> > my first etching tank. When I picked up the fish tank pump, I
also
> > noticed they had these thing that looked like porous stone that
are
> > used to spread out the bubbles. I bought one, but dropped it on
the
> > floor before I had a chance to see if it worked.
> > So, I am wondering if there is a good way to get bubbles to
spread out
> > across the bottom of my container?
> > The fish tank thing only cost $1.00 or so, so I really don't
mind
> > buying another one to try, but I figure some of you creative
folks
> > here might have better method.
> > Chris
>
>
> I use a bubbler hose. It is kind of a hose made of foam rubber
with holes
> punched in one side. It makes many small bubbles. I tried
different things
> before, and always encountered uneven etching. I still see some
unevenness
> with this hose, but it is much better already. You might need to
get the
> lead(?) wire out of it and instead glue it to a plastic stick
which you
> sink.
> I want to try a long bubbler stone one day.
>
> for larger tanks think and tinker shows a way to build a
bubbler...
>
> ST