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The VAF News - 7.6.2026. #6559.

DeltaRomeo

doug reeves: unfluencer
Staff member
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You can DIY a patch similar to the ClickBond product if you choose - just a small, formed (or machined), round Aluminum patch, an appropriate adhesive (I prefer 3M-2216 epoxy), and a mechanism by which to attach it ...
I made this "cup" type washer for a friend's leaky fuel tank drain outlet. Machined to have a joint "thickness" of .032 over the flange face & a 1/8" annular ring x ~.090" around the outer edge. Makes a nice neat, compact "overlay" to the entire outlet. I have talked to 3M engineers about the suitability of their adhesive for a repair like this and was told it (2216) is stability (after cure) is excellent in avgas.
I'm a big fan of the "Trust but Verify" doctrine introduced back in the 19080's, so I have been running an experiment since 2011 with cured samples of 2216 immersed in 100LL AvGas and have not seen any deterioration of the material.
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OFF TOPIC:
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