Homebrew PCBs

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