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RE : Re: Self-etching primer

 
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Carlos Sa



Joined: 13 Jan 2006
Posts: 96

PostPosted: Sat Aug 26, 2006 9:16 am    Post subject: RE : Re: Self-etching primer Reply with quote

Here's another point of view:

Assuming equal numbers of primed and non-primed planes, which one is more likely: (1) a builder
regrets having primed his plane or (2) a builder regrets **not** having primed it?...
Now back to your regulard broadcast...

Carlos
CH601-HD, plans
2.317% already polished
Montral, Canada

Quote:


Any opinions pro or con about using aerosol self-etching primer for
corrosion protection on internal surfaces that are to be riveted together?
I checked the archives but what I found was inconclusive on this point.

Tim

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CH601-HD, plans
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larry(at)macsmachine.com
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PostPosted: Sat Aug 26, 2006 10:27 am    Post subject: RE : Re: Self-etching primer Reply with quote

Tim,
It is said that 6061 aluminum might be all right without primer between
riveted surfaces. The advantage of coating
them with a primer is that the chemistry of where you live, coastal or
industrial areas is less a concern. Both these areas
are a good reason for priming close contact surfaces. These will stay
moist for long periods of time and it's not worth the
risk and loss of value for not having done a minimal priming effort.
I'd advise priming these areas and any non accessible
blind areas if possible. I used a case of zinc chromate from a rattle
can. Just some of the exposed areas that will
be finish painted (small spots trim tab etc,) require its removal. It
doesn't come off that easily, MEK and scotchbrite pads
work after a while. Just keep the air moving away from you so you don't
breath the stuff. A thin coloration that can be
nearly seen through is as good as a heavy coat for corrosion protection.

Larry McFarland - 601HDS at www.macsmachine.com

Quote:



>
>
>Any opinions pro or con about using aerosol self-etching primer for
>corrosion protection on internal surfaces that are to be riveted together?
>I checked the archives but what I found was inconclusive on this point.
>
>Tim
>
>






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pacificpainting(at)comcas
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PostPosted: Sat Aug 26, 2006 10:58 am    Post subject: RE : Re: Self-etching primer Reply with quote

In case you don't know, SEM self etching primer will lift Zinc Chromate.

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