After a year of research I am very happy to reveal my new "Ancient Coin Patinator." I think all will be surprised at the simplicity of the unit and how easily the unit can be built. I am now working on a schematic to release to my groups and the drawing should be ready by late next week. I have repatinated a coin to share and if you look at the top right you will see the obverse and reverse of the coin. I stripped the coin down to the bronze surface and made certain no patina was on the coin before repatinating.
I also arranged two photographs to illustrate the "before and after" of the coin. Please click on the following URL to see the stripped obverse in contrast to the patinated obverse: http://tinyurl.com/2fuyvp I think the photograph illustrates very well what we are now able to do. I also have a stitched photograph of the reverse before and after. Please click to view: http://tinyurl.com/33a6tl
I used a 600 mA AC adaptor and left the coin in my solution for about 30 seconds. One can vary the values of the patina by leaving the coin in the solution for a longer periods of time. I am very happy with the results I have been getting and I think this is the answer to our repatination process. I would like feedback please. A friend and I are looking at the possibilty of a patent.