It is a liquid bath and I would guess the more parts I add the more currant it will draw. I really don't want to say what it is till I see if it works or not. The best voltage would be about 1 1/2 volts at 300 milliamp.
I have a variable voltage and currant power supply coming, If and when FedEx delivers it its been on there truck 5 days. They say it is because of the winter weather but the ice has been gone since Wednesday.
So that problem will be fixed, I still want to lower the voltage on the other one for a friend to use if it works then I'll do a write up on it.
Thanks
Paul