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You could:
+ ignore the problem. Most fiberglass homebuilt tanks I have seen do not
have quick drains; they're relying on the gascolator to stop the water.
+ use the aluminum welding flanges, and either embed them in the layup,
or flox them in place, after drilling holes in the flange for the flox
"rivets" to squeze through.
+ use polysulfide (Pro-Seal is one (un)popular brand) to glue a welding
flange onto a completed tank, again, after drilling holes in the
flange.
I am going to take the previous posters advice and rivet some flanges on
my tanks, with closed end pop rivets, dipped in MEK to degrease them
first, and everything slathered in Pro-Seal.
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Re: Drains in Wing Tanks
