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Thread: Do you need etching primer under featherfill primer?
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Old 10-23-2003, 02:17 PM
asennad asennad is offline
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"After sandblasting the rust areas I would treat them with Ospho, or a substance like it. Then I would use the acid etch primer."

What's the point of that? Using the Ospho is acid etching the surface anyway so putting an etch primer on top of that is simply duplicating the etching process.
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