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Old 02-03-2013, 19:35   #16
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Re: Painting Aluminium?

Quote:
Originally Posted by bobconnie View Post
Theres always the Old way! sand litely,and wash down and wipe with vinegar,(a mild acid) and paint! worked for years and no blistering ! just a thought!
Explain some more...
That's the only prep?
What paint?
How long does it last?
Have you done it personally?

Vic
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Old 02-03-2013, 19:41   #17
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Re: Painting Aluminium?

Ive used Vinegar for years for a etch for aluminum before painting ! Ive use everything for paint from auto paint to serveral 2 part paints, of course ya have to sand before etching, just prepare it like ya would any other surface to paint then etch with the vinegar, let dry and paint ! always worked for me on boats , cars, ect.
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Old 02-03-2013, 21:05   #18
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Re: Painting Aluminium?

What about Zinc Chromate primer?

1) Sand
2) Wash
3) Vinegar
4) Zinc Chromate primer
5) Epoxy primer
6) Two part polyurethane

That was the advice I received twelve years ago (the last time I pained my mast). Have things changed? I'm in the process of doing it again.
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Old 02-03-2013, 21:28   #19
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Re: Painting Aluminium?

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Originally Posted by Bambolera View Post
What about Zinc Chromate primer?

1) Sand
2) Wash
3) Vinegar
4) Zinc Chromate primer
5) Epoxy primer
6) Two part polyurethane

That was the advice I received twelve years ago (the last time I pained my mast). Have things changed? I'm in the process of doing it again.
I have a similar challenge just on my sterndrive. The two part etching prep prescribed by Volvo Penta is nearly impossible to get, and then you have to wear a hazmat suit to use it.

Would vineger + zinc chromate prep work as well for aluminum under water?
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Old 02-03-2013, 22:37   #20
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Re: Painting Aluminium?

Sorry, I forgot to say primer! but to me paint means just that, prime, sand, prime again, then paint the finish coats! I will try to rember some folks are not used to my talk style ! and I write as I would talk to ya
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