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is there a way to make an air tight seal between two sheets of aluminum without soldering, brazing, or welding? Answered

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Burf

Best Answer 7 years ago

many varieties glue and caulking compound:
silicone caulk
latex caulk
epoxy glue
urethane glue
etc.

also rubber seals, O-rings and gaskets

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KitemanBurf

Answer 7 years ago

Or simply fold the edges over together two or three times and hammer the folds flat.

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Kitemanconnoboarder

Answer 7 years ago

Hit "best" on Burf's post, and the whole thread counts.

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hhnewman

7 years ago

Nostalgic Guy's got it; context matters. If you're trying to keep your sandwich clean, that's one issue. If you're making a solar reflecting oven, that's another.

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steveastrouk

7 years ago

Kiteman's method's great, especially if you have access to a metal folder - the joints are gas tight.

Soda can lids are assembled in a similar way. They don't leak either.

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Nostalgic Guy

7 years ago

Both Burf & Kiteman a re quite right you could use any of the methods they suggest but it really depends on what you want to do with the joined sheets.
A little more information about what you are making would produce answers that would be far more helpful to you.