Today's Message Index:
----------------------
1. 08:28 AM - Priming / painting (PeterHunt1@aol.com)
2. 10:22 AM - Re: RV8-List Digest: 1 Msgs - 02/07/04 (Speedy11@aol.com)
3. 08:57 PM - Re: RV8-List Digest: Priming / Painting (Garey Wittich)
Message 1
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| Subject: | Priming / painting |
--> RV8-List message posted by: PeterHunt1@aol.com
Michael,
My QB RV-6 also came with the "aluminum priming brushed" you described. Van
told me this is an interior primer and needs no further paint cover. However,
I decided to paint the cockpit area, but didn't prepare Van's primer well. I
just wiped it down which wasn't enough and my paint pealed off in many
places. I finally had to remove my paint (a terrible job). Then I sanded Van's
primer paint with scotch bright and cleaned it well with MEK. The lesson
learned. Van's primer needs good preparation before top coating.
Pete
Clearwater, FL
RV-6, installing engine
Message 2
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| Subject: | Re: RV8-List Digest: 1 Msgs - 02/07/04 |
--> RV8-List message posted by: Speedy11@aol.com
In a message dated 2/8/04 3:00:13 AM Eastern Standard Time,
rv8-list-digest@matronics.com writes:
<< My QB fuselage came with a kind of aluminium priming brushed, providing a
steel grey color to the surface.
What kind of primer is that and can I paint over it or do I have to prepare
somehow the surface ? >>
Michel,
Van's applies a "wash primer" that is supposed to protect the aluminum fairly
well. I, however, intend my plane to be flying 100 years from now (by my yet
unborn grandson) and in addition I live on the Florida coast, so I intend to
spray Marhyde primer on the entire inside of the airplane (or at least as much
as possible). I plan to leave the wash primer in place and simply clean the
surface with quick prep before priming. It may be a waste of time and money,
but that is what I plan to do. So many times I've heard guys say, "I wish
more had been done to protect my plane from corrosion when it was built." I
believe the aircraft manufacturers intended their planes to be "used up" and
discarded, much like cars, when they were building them and they made a business
decision to not protect them internally.
Stan Sutterfield
RV-8A QB
Tampa, FL
Message 3
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| Subject: | Re: RV8-List Digest: Priming / Painting |
--> RV8-List message posted by: Garey Wittich <gareywittich2000@yahoo.com>
Mike:
That "grey" color is a diluted version of Sherwin
Williams P60-G2 Wash Primer. It provides minimal
corrosion protection and is not a vapor barrier
(water, etc.) like Epoxy Primers are. Per the
military, it is not a substitute for a "real" primer
like an Epoxy Primer and it needs to be coated with a
"real" primer" or painted over. A Wash Primer is just
a low cost, easy application substitute for a more
laborous Acid Etch and Alodine method which provides
better corrosion protection. I have experimented with
"full strength" P60-G2 on aluminum samples on my roof
aging for 9 months now. So far there is very little
corrosion. Van's wash primer and P60-G2 can be
cleaned off (not removed) with Denatured Acohol. If
you want to REMOVE it use MEK, Acetone or Lacquer
Thinner.
I have written "A Guide for Painting & Corrosion
Control of Aluminum & Composite Aircraft" that
addresses Wash Primers (P60-G2 in much more detail),
Paints, Processes that you might find useful. It is
discribed on the Matronics Site / RV-8 / Paint / Nov
03.
Glad to help, Garey Wittich
> From: "Michel Gordillo"
> <michelgordillo@telefonica.net>
> Subject: RV8-List: Priming / painting
>
> --> RV8-List message posted by: "Michel Gordillo"
> <michelgordillo@telefonica.net>
>
> Hi.
> My QB fuselage came with a kind of aluminium priming
> brushed, providing a
> steel grey color to the surface.
> What kind of primer is that and can I paint over it
> or do I have to prepare
> somehow the surface ?
> Thank you very much
> Michel Gordillo
> RV8 tail complete.
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