The "hide heavier metals" in an ingot, most metals float on the surface of molten non-ferrous metals
I have melted "dirty" aluminum. bolts and pins float and you skim them off.
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The "hide heavier metals" in an ingot, most metals float on the surface of molten non-ferrous metals
I have melted "dirty" aluminum. bolts and pins float and you skim them off.
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