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Old 07-19-2009, 10:09 PM
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Plastic bumper covers

A couple questions,
I have a 84 camaro with plastic front/rear bumper covers, the front is starting to peel the top layer of paint, and the rear has the spiderweb cracks, I started sanding the rear one and discover 2 different layers of color, 2 different layers of black primer sandwiched between the colors, then at last a 3rd layer of primer, then the plastic cover, I stopped right there, not going farther till I have a idea on how to procede.

I'm assuming that I need to strip it completely down, and start fresh,
heres the questions...
What do I use to repair a small area of the rear plastic bumper cover? plastic has imperfections/ weathering, was slightly damaged in fender/bender
And what to use as a primer or starting point to start laying primer down?
a adhesion promotor or my 2k urethane primer with a flex additive...

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Old 07-20-2009, 06:41 PM
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Clean and sand the damaged area and use some of the flexible
spot putty made for flexible parts.
Evercoat makes one called "Poly-Flex"
It works pretty good for small imperfections.
For larger ones you'll have to get a flexible body filler, there's some
made just for bumpers. Usually comes in tubes.
After sanding smooth, spray all exposed plastic with adhesion promoter.
Bulldog is one brand, they sell spray cans of it at WalMart.
After adhesion promoter, prime it and paint as usual.
You can also prime first and put the spot putty after the primer,
just be sure to prime again before paint.
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