Homebrew PCBs

On Mon, 23 May 2005 12:32:05 -0400, microsoftwarecontrol  
<microsoftwarecontrol@...> wrote:

>
> I found well agitation is really esantial in etching. Uneven should be
> eliminated at all.
> I found a small cycling pump for chemistries, I only worry about flow  
> rate
> of it. After
> I real test it, I will give result here.
> By the way, I think of glueing a narrow glass tank with bottom been  
> heated.
> Is that kind of glue for home aquarium glass tank, OK? Can it take 70C?


I am not sure etchant pumping is the ideal agitation, there will always be  
currents etc.
Small air bubbles work for me..


I dunno which glue you mean, probably silicone, and that should be fine at  
70C.
But then, no etchant i know can be operated at 70C, what are you using?!?

ST