change your thinking. This will help. what you have is light iron not tin. Tin is fairly rare and is worth $20+ a lb. Tin is added to iron to make light iron more corrosive resistant. Carbon is added to iron to make steel. have a computer scrapper show you some memory with "silver" fingers. That's Tin. or "silver" coated wire. The coating is Tin,so, what you have is iron with other metals attached. the difference between light iron and heavy iron is, heavy iron is 1/8 in or thicker. It should make no difference if it is rusty. Rust is iron oxide. Iron oxide mixed properly with Alu oxide is......never mind.
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