> What I wish to use is a clear acrylic, welded together with the
> acrylic cement, and cause the liquid to move by using a small
> propeller. Obviously I can't run an electronic motor inside the tank,
> and most gears and bands would probably fall apart after the first
> board is done.
Just got to thinking - In lab work years ago, a standard stirring
mechanism was a motor (variable speed) driven magnet base for a liquid
container (read: etchant tank) with a Teflon encapsulated magnet just
dropped into the tank. The base magnet would spin the teflon
encapsulated magnet inside, stirring the liquid. Higher speeds could
generate a full whirlpool in a 8-10" deep flask. I'd bet that the
magnet s are still a common lab item - and should be cheap. The only
etchant contact would be teflon. Might be an etchant agitator for PCB work.
Norm