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notsew_evets(at)frontiern
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 Posted: Sat Mar 01, 2008 3:20 pm Post subject: Another day another disaster |
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So, here I am in the Arizona sun with temperature in the low 80s.
I painted my fuselage today and need advise. Advise from experienced painters...
The fuselage was primed with a two part epoxy primer (green).
Its cured for months and has been scuffed for that extra "bite".
In some spots I used Tempo primer from a can. Aircraft Spruce sells the stuff for priming under epoxy paints so I "think" is a good product.
Well I see bleeding in some areas and wonder if its the "zinc" type primer?
Anyway, what do I need to do ? I assume I let it all cure for a few days and lightly sand and apply one last light coat..???...
Any thoughts ??
Thanks
Steve
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japhillipsga(at)aol.com
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| Posted: Mon Mar 03, 2008 8:01 am Post subject: Another day another disaster |
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Steve, I have some experience with paint and painting once over zinc primer. I was not able to re coat sufficiently to halt bleed through totally. I don't think allowing any amount to cure time with allow you to re coat with success. On my plane, thankfully, the zinc bled though under the wing at the skin seam and is very difficult to see, but I know where it is. If it had been on top somewhere I would have had to remove to metal. Zinc will bleed through two coats of two part epoxy and two coats of polyurethane single stage finish coat. If there is another fix I don't know what it is. I ended up taking both flaps to the metal to remove the zinc. Sorry I can't be more help. This issue has a long thread in the archives. Best regards, Bill of Georgia
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n85ae
Joined: 14 Mar 2007
Posts: 403
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| Posted: Mon Mar 03, 2008 10:02 am Post subject: Re: Another day another disaster |
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You might try a Waterborne Epoxy primer like System Three WR-155,
the Zinc primer you have is probably being dissolved and bleeding into
the primer you are using now due to the solvents.
Of course, if you use the WR-155, then you'll need to test all your topcoats
for compatability with the primer ...
Jeff.
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