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I'm pretty sure that aluminum foil is 99.9% pure. Its definately very pure, even if that number isnt exact. Either way, im sure 0.1% of impurities...
Its fine. Nothing bad is going to happen to you, unless you're using aluminum 24/7 all year round. An average bic lighter isnt even strong enough...
Ah, I get it. Makes sense.
I've searched and found nothing, so if someone would point me in the right direction, that would be nice. My question is the same as the title....