Try to find copies of two videos by John Glover. Aluminm Shapes and Aircraft Shapes. They are old and were only put out on VHS but found mine on ebay. Also Kent White's videos called Shrinking Magic and Shaping Aluminm Wheel Pants and his Aluminm Welding videos (TMTechnologies.com) taught me a lot as well.
Much of the compound curved parts on light aircraft are fairings and not load bearing, so they are commonly made from 3003 which is easy to weld (If I can do it, you can) with a torch. There are some good threads here and on that metal shaping site on aircraft work. Good luck.
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Scott in Montreal
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