Thread: Zinc in Lead
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Old October 15, 2012, 09:43 PM   #12
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Join Date: December 20, 2007
Location: S.E. Minnesota
Posts: 4,295
If you heat the scrap lead too fast, you can have some zinc trapped at the bottom where it melts before the lead on top melts. Don't ask me how I know this.

On an unrelated topic, I had about 7 pounds of zinc-contaminated lead on my bench, mocking me. I probably should have thrown it out, but I can't throw anything out (you'd think I was raised during The Depression.) So I cast a bunch of silver dollar sized ingots, and I can put one or two of those in a 20# batch of lead without hurting anything. Three would be pushing my luck. I've used up a couple of pounds of the stuff that way.
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