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Aug 28, 2019 at 3:19 comment added Scott Tramposch I melt aluminum using a large fresnel lens salvaged from an old big screen TV. No impact there, but it's a lot of work to keep it focused. You could also use solar PV to melt it with a small kiln. I may have misunderstood the part of the question where the OP seems to imply that aluminum foil cannot be recycled. It can, regardless of the fact that many people who recycle will not accept it. Just trying to say that it has a high value and should not be tossed out.
Aug 24, 2019 at 6:51 comment added THelper I like the last part of your answer about potential alternatives, but I don't agree with the rest. Melting aluminium yourself and/or having it recycled has an environmental impact, so I think that's why the OP asked this question. How can he lower his impact? Or can you provide some evidence that the difference in impact between aluminium and alternatives is negliable?
Aug 23, 2019 at 21:02 history answered Scott Tramposch CC BY-SA 4.0