Anyone Ever Try The "Sound Test" On 2001-2003 Quarters?

I'm using almost 50 volts now in an attempt to speed it up and it's still taking forever. The coin is placed aletrnatingly in Nickel acetate and Copper sulphate, whichever layer is exposed. I wonder where I went wrong or it was slow from the beginning anyway.

I'm using a penny for a cathode. It worked fine at first (now it's got so much plating on it that it's unrecognisable even though I've washed off lots of the loose plating off many times) but it doesn't seem to work as well now. It still works, but very slowly. I took a measurement of the current and it says 0.01 but I forgot whether the unit was in A or mA.

Should I switch to using nickel as the cathode instead?

I put so much salt in the solution that I can't dissolve any more, there's a layer of salt just sitting there at the bottom of the beaker. I could try borrowing a heating plate tomorrow, see if that helps. The thing I don't get is that it works well at first and it bubbles a lot, and now it's going very slow.

I'll grab a fresh penny tomorrow for the copper cathode. I can use the really thin nickel as the other.

Not sure if that will have a direct effect on mine, but I'll try it out. If if doesn't, I'll have to make a new solution. When I came back this Monday I found that my setup had been tampered with. I was making Nickel acetate over the weekend, and what I saw on Monday was that half the clip on the anode was missing (from only one side - the other side of the clip was fully intact, no signs of being eaten by acid or anything like that, not that it's possible anyway with vinegar in 2 days), the nickel was at the bottom of the beaker, and batteries and wires had been moved around. I don't know if the Nickel acetate was touched, but if this won't work I'll suspect it was.