Homebrew PCBs

> 
> Would that not change if a motor is used? The tube could have a
> dameter of say 1/2" and this would transport quite a bit of etchant 
in
> a short tim - no? I can imagine that such a pump could do but then I
> don't have experience with pumps. 

> Markus


A larger tube could be used, and that would offer more volume.  means 
a bigger motor, that may not be a problem.


I didn't like compressed air as that creates a potential disaster.  
one possibility is to fill a pressure tank, pressureize it and spray 
one batch.  re-fil and spray again.  would require a couple gallons 
to get a few minutes of spray.  But the hazzard potential increases 
drastically.

Dave