Had a crazy thought yesterday. What do you all think about using aluminum solder to seal the rivet heads on wing tanks? I've tried Marine Tex. and JB Weld epoxy and neither gave me the results I was looking for. They will seal the rivets but, they do nothing for the appearance of the tanks/skins.
The down side of soldering is that you'd have to take a torch to a fuel tank and that's obviously somewhat dangerous. If you pumped in a non-combustible inert gas at the same time you soldered the rivets, tanks drained of course, it should be safe. I've seen this done when welding gas tanks. Any thoughts? The previous owner of my plane recommended a product called Miracle Paint - Rust and Corrosion Inhibitor. It's available through JC Whitney for about $35 and comes in two colors and clear. Says on the label it can be used for fuel tank repairs. It's thin enough to brush or spray on and should have no detrimental effects on the appearance of the tanks. Think I'll give this stuff a try first and then look into soldering if the corrosion paint doesn't work. Bill DuCharme N6554Q
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