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Author Message   David_nebenzahl Tinkerer Username: David_nebenzahl Post Number: 143 Registered: 12-2009 Rating: N/A Votes: 0 Posted on Thursday, February 11, 2010 - 05:25 pm:    Well. since we're finding possible problems with various materials and methods, I'd have to say that aluminum foil might cause electrolytic corrosion if it was in contact with a different metal (and if there was some moisture present). I'm pretty sure any material is going to have its "gotchas".