Some math: Lets say you can get pennies 1000kg at a time. That's 400,000 pennies (@2.5g/ea), or $4000 raw material and a theoretical maximum profit of $800. Th

Some math: Lets say you can get pennies 1000kg at a time. That's 400,000 pennies (@2.5g/ea), or $4000 raw material and a theoretical maximum profit of $800. This is assuming that someone is willing to buy your refined metal at full market value (so it needs to be relatively pure, not backyard crucible grade). I'm guessing to turn a profit on the needed equipment, labor, and other costs of running the operation, you'd probably need to be doing at least 10,000kg/day or something. Seems implausible - you'd never get the supply.