I have a 12V 10A power supply connected to the copper electrodes used for making copper sulfate. After about 5 minutes, the mixture gets warm. An ammeter connected in series only shows about .2A of current being drawn so I suspect that it is the huge restiveness of the acid,water mixture. Also, do I always need pure, clean copper to get a good plating? I was able to wire brush some pliers and just dunk them in the solution and got a wonderful result. Is there any way to get this automatic adhesion with any metal? I am fairly new to this electroplating. I have piddled in the past but want to use the rust preventative properties.