Modified microwave transformer- need advice for rectifiers and wire ratings. Hello everyone. I've been doing a lot of research as to how to go about purifying copper. There are two approaches I'm considering. Electrolysis and Smelting. The electrolysis method requires I have a DC output of low voltage and high amperage. I'm in need of the high amperage as amps relates to coulombs, as coulombs relates to the amount of moles of electrons I can get. I've calculated I can get around 18.65 moles of electrons per KWh from 500 Amps. Here's my calculations for my electrolysis procedure, (500 Amps (Coulombs)) * (6.24 E18 electrons) * (3600 seconds) / (6.02 E23 particles) = 18.65 moles of electrons per kilowatt hour. So, by modifying the secondary coil of a microwave transformer rated somewhere around 1000 Watts, I should be able to produce 2-3volts at 500amps. This transformer is being fed from a regular residential outlet, (120V 20A). My problem arises when I've converted over to 500 Amps, it's still in AC current when I need DC current to correctly carry out electrolysis. I'm not sure where to find a cheap rectifier that can handle something like this, and, would I need something to protect the overall device from overheating? As for smelting of the copper, I like the design this person came up with in this youtube video: http://www.youtube.com/watch?v=zw_SrGU2iYs&feature=relmfu All I need is some furnace cement and some kind of wire that could handle the temperatures needed to melt copper. My modified transformer's output can just stay in AC, and I'm basically using an induction heating coil. If I were to go to a junkyard, could I expect to find the type of wire used in this video within a certain device? Thanks, any help is appreciated!