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aluminum fuselage oxidation moses

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aluminum fuselage oxidation moses

Postby grandeand » Wed Jan 15, 2020 11:09 am

hello guys,
I noticed these two oxidation points on the aluminum fuselage of my moses.
in October I had disassembled it as a mast because in winter I don't use it and it only had two very small white dots, which I cleaned.
how to intervene?

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Re: aluminum fuselage oxidation moses

Postby airsail » Wed Jan 15, 2020 8:25 pm

Looks like the fuselage has been scratched and now corrosion has started under the anodised surface.
Remove all corrosion products by mechanical means, eg sanding, file, grinding etc.
Apply a aluminium surface conditioner, it’s an acid that removes any remaining corrosion products, we use a product called WO1.
Apply a chemical conversion coating, another type of acid which provides a anodised finish, we use a product called Alodine 1200.
Prime the surface with a quality primer, we use a two part epoxy.
Top coat as required.
Now you probably won’t have access to the above chemicals as they are aviation specific, maybe a boat yard could help, but you might find alternates by googling. You could also sand blast the area prime and paint, not a permanent fix but will give you a couple of seasons then replace the fuselage.

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Re: aluminum fuselage oxidation moses

Postby juanpasala » Thu Jan 16, 2020 5:54 pm

Sand-Paint-Repeat after a couple months

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Re: aluminum fuselage oxidation moses

Postby TomW » Thu Jan 16, 2020 11:48 pm

I had some surface oxidation, then I just cleaned it well and applied turtle car wax. Never saw it again

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