Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - Prepping urethane bumpers and fiberglass parts?
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Old 01-31-2006, 02:59 PM
x711 x711 is offline
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The 5425 primer has the flex additive built in, "You do not have to add it"

I mentioned this because you do not want to use primer on a flexable part
such as a bumper cover etc that could possibly chip away or crack if the
part was flexed etc. Keep in mind, Paint goes over the primer. If the primer
cracks or breaks away.. So will your paint !

Thanks.... X
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