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Old Oct 10, 2002, 10:22 AM
Bob K is offline
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San Diego
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best sandable primer?

Does anyone have any recommendations/testimonials as to a good sandable aerosol primer? I have always liked Pactra, but, I don't know if it's foam safe. I will be filling the weave of some 3/4 oz. fiberglass applied with Polycrylic over white foam. Thanks.
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Old Oct 10, 2002, 11:50 AM
planeman is offline
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I'm assuming you are talking about a primer that will work on foam.

I've been trying a shellac-based primer called B-I-N manufactured by Zinsser (sp?) that is available at Home Depot and almost every hardware store. I was so impressed when using around the house I thought I'd try it on the airplanes. It works with plastic, leaves a white finish, dries quickly, and cleans up with alcohol. It comes in cans or aerosols. Be sure to shake it up well as it has a lot of solids that need to be mixed back into the shellac solvent.

One drawback: It will melt if a covering iron is used on it. Shellac doesn't deal with heat very well.

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