>in
> 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
> a short tim - no? I can imagine that such a pump could do but then IA larger tube could be used, and that would offer more volume. means
> don't have experience with pumps.
> Markus
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