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Aluminim is MUCH more difficult to weld than steel. Practice is about 80% and having a really good welder and the correct torch and sheilding gas is the rest. If I remember correctly, helium is best for Aluminum along with Pure Tungsten for the electrode. (Green tipped)
When I was very young I did TIG welding on the side for a tool and die company. Learned to weld hardened tool steels fairly well, but when it came to Aluminum, specifically thin Aluminum, its a completely different game.
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2013 911 Turbo S
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1930 Cadillac V8, 1991 Ford F250,
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And some garage space....
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