Homebrew PCBs

>the trick is to 'remove' the used etchant off the surface of the 
>board as fast as it eats through the copper, really impressive. well 
>that's what the bubbles are for, but mechanically wiping is even 
>more effective!

While that's the theory, I'm inclined to believe that the better bubble 
etchers also use the bubbles to move the board away from used etchant. 
In other words the board should be in constant motion and the system 
should be bordering on a state of controlled chaos. The last thing you 
want is a relatively stationary board amidst an orderly stream of 
bubbles even though it seems to meet the theoretical requirements.

--- In Homebrew_PCBs@yahoogroups.com, "Herbert E. Plett" 
<cachureos@...> wrote:
>