Homebrew PCBs

James McGee wrote:
> 
> 
> Maybe I'm a little out of sync with the conversation, but my first
> thoughts involve air and suction. like a siphon feed on paint guns and
> sand blasters. a valve to control air flow, two plastic pipe joining at
> a slight angle to form the suction. a tip for the spray pattern. Sort
> of a large version of the cheap plastic model car airbrushes.
> Any thoughts?
> 

You might have a few ventilation problems. Remember , your not spraying 
water on the garden. Such volume of air will force very undesirable 
amounts of etchant mist out of the spray chamber. The etchant must be 
contained. I'm not even going to ask if you were thinking of spraying 
out in the open.

Adam