"James Beck" <[email protected]> wrote in message
> In article <[email protected]>, Jamesthompson2002
> @hotmail.com says...
>> I came up with probably an old scheme but simple enough to circulate
>> in a pcb tank.
>> Start with a plastic soda cap, snip the edges of it to make fins. Then
>> silicone sealant to glue a small magnet inside the cap. Cap sits on
>> of tank, then.
>> Affix another magnet to the shaft of a small dc motor mounted in a
>> base for your tank and directly under the cap. As motor spins, so does
>> and etching solution. Simple enough you think?
> I used an aquarium air pump and a bubble wand to keep things moving back
> in the day.
Yes, the bubble wand is ok but it also causes a mist to rise from the tank.
I knew of the chemistry lab stir and it is what I wanted to duplicate for a
DIY etchant tank stir, to eliminate as much misting of etchant as possible.
I'm just doing a small tank as of now to see how well it works out. I have
seen a few post talking about a pump for the etchant tanks and wanted to
share my approach to it. JTT...