I made some aluminium brackets for lowering my bike's seat and found that bending and shaping was made much easier by annealing the metal first. That is heating it up with a torch and then letting it cool slowly to room temp. It will reduce the aluminium's strength a little, but if it's being used for fairings or parts that don't get much stress it shouldn't be a problem.
Thank you for the information on the zinc chromate primer. I'll have to give that a try before I paint next time. ^_^
-[a]-
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