(Greg Reid) wrote in message . com...
I'm looking for tips on a proven, lightweight, leak-free,

Aluminum is another possibility and certainly lighter, but another
recent thread in this newsgroup cautions about the difficulty of
getting a permanent epoxy bond with aluminum.

Thanks,
Greg

While it's true that yo can't get a reliable structural bond to
aluminum without proper etching there are lots of planes flying with
many hours, and years, using aluminum "welding flanges" for fuel tank
fittings. Just drill several holes in the flanges and use plenty of
flox to bed them in.

Unless you plan to be bending on the fittings on a regular basis they
should remain leak free as they have proven to do for others.
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Leon McAtee