Homebrew PCBs

Hi Stan,

Do you remember what color the bubbler stones were and how long it 
took for them to dissolve?

Chris






--- In Homebrew_PCBs@yahoogroups.com, "stan4312" <stanman@t...> 
wrote:
> 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