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Re: advise

Posted: Mon Dec 17, 2012 8:56 am
by stevearea58
'You are correct with using epoxy primer. I ran into serious problems years ago after getting into recovering jobs that had only zinc-chromate under. The glues were dissolving the primer and there was severe corrosion under the fabric. BTW I am a long time A&P IA. I guess for parts that you are not gluing fabric to, a thin coat of the powder process would be ok. I found the " if a lot is good, more is better" is a problem with powder coating. It will fill up holes unless you use plugs on it and will really mess up threads also.
'Keep em flying'

Steve Reber

--- In fairchildclub@yahoogroups.com, Russell Williams wrote:
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> I use the Poly Fiber process, but we were talking about metal coatings in the powder vs. paint discussion, not fabric topcoat.
> The Poly Fiber STC doesn't require a particular metal treatment the last time I looked, but does warn you that non-epoxy primers and varnishes will be attacked and will discolor the fabric when subjected to Poly solvents. I've used poly tack successfully directly atop the Poly epoxy primer, Poly epoxy varnish over wood, atop Deft 44GN11 epoxy primer on steel and aluminum, and atop primer + topcoat of Imron urethane. I've never tried Poly Tack atop powder coated material.
> To: fairchildclub@yahoogroups.com
> From: stevearea58@...
> Date: Sun, 9 Dec 2012 18:18:22 +0000
> Subject: [fairchildclub] Re: advise
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> Question
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> 1, what STCed covering method are you using?
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> 2, use the painting method required by the STC to remain legal
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> Certificated aircraft require following the STC
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