TroyMaynor@aol.com wrote:
> ....
> Also, how much paint should I plan to buy for the entire aircraft? I will use
> an automotive paint like DuPont Imron or PPG polyurethane.
These polys are applied comparatively thick, for flow-out to achieve
desired result (plus at least Imron doesn't have a lot of solids).
Dupont sez 544 sq. ft. per gallon theoretically, but also say up to 4
coats if desired. Flow-out requires the stuff be relatively thick,
and one gallon may tempt stretching it, for disappointing results.
> One more; the fellow that will be spraying it suggested using some of the
> primer that is normally used under the same paint when he paints cars.
Solvent based finish coating can adhere to the primer chemically if
it's solvent based also, like lacquer or acrylic. Similar for solvent
type epoxy primers, if not fully cured. But fully cured epoxy, and
water-based Smooth Prime will be purely tooth adhesion, meaning of
course thoroughly abraded. Not that tooth adhesion is insufficient,
but that's the difference. Using a solvent primer "intercoat" may not
improve things.
The Imron I shot on the other plane is hangin' in after 15 years
sitting outside, but even though it is a "soft" poly, it is just not
repairable, whether application error or subsequent damage, and dries
slowly (spelled dust). Worse, on composite planes, you have much
fewer "panel-to-panel" areas to solve the problem of being unable to
feather and compound a repair area. "Automotive paints" now include
acrylic urethanes (like Dupont ChromaBase), plus their clear coat with
the additive. You still get reasonable solvent resistance, plus more
easily repairable and can be compounded, like to fix orange peel. Not
quite "wet look" nor go 15 years, but other advantages can outweigh.
Regards,
Fred F.
N3EU
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