Homebrew PCBs

--- In Homebrew_PCBs@yahoogroups.com, "Stefan Trethan" 
<stefan_trethan@g...> wrote:
<snip>

> 
> it is no longer used, i made a better tank soon after taking the 
photos.  
> Maybe one day i make photos of that one.
> 
> It is glued with RTV, works great for glass and holds up in CuCl 
without  
> problems. I used huge double seams for that first tank, much less 
is  
> sufficient.
> 
> I use CuCl, yes.
> 
> ST
>

Another question on your setup - It appears that the two tubes 
attached to the air pump provide a supply and a return for the air 
pumped into the etch tank. Is that the case? If so, is there any 
special type of pump required to stand up to the etchant fumes in 
the return air?


Regards, Bob