I am prepping the bumper for painting. It has some hairline cracks in the paint. I sanded the paint off down to the brown/gray urethane. The cracks extend down into the urethane. So now that the paint is off can I just prime it with epoxy or a filler primer? Or do I gouge out the hairline cracks and fill them with flexible repair material?




In the picture there is a white scratch in the middle of the photo. It is barely visible.


Frank

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88 GT 5 Speed Black with gray interior
3800 SCII Swap.
Paint in Progress

IT RUNS!!
IT'S QUICK!!

"Real integrity is doing the right thing, knowing that nobody's going to know whether you did it or not."

I ground mine down to bare plastic when I did mine, the whole thing,both of them. If there are any cracks anywhere else on it they will just reappear. I used 2 coats of filler primer and a top coat of regular primer after I blocked them out.

The top pic is 80% done cleaned off.







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Project Genisis Lo Budget 3800SC swap

88 Coupe under construction

[This message has been edited by hercimer01 (edited 08-04-2013).]

You can use Everflex glazing or other similar products made for flexible bumpers. Just don't use Bondo.

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trueleo.com
RSpiderII@aol.com

I have some Evercoat Polyester Glazing Putty. Could I use it or should I get some Evercoat Poly-Flex Flexible Polyester Glazing Putty (411)? Is there another brand that is better?

You really need to "V" out the cracks & fill them with a flexible bumper repair product (not glazing putty). Once you have them filled & sanded down, prime with epoxy (PPG DP primer) & then if you need it you can smooth it out with the flex glazing putty.
~ Paul
aka "Tha Driver"

Custom Fiberglass Parts

Now that was a Great Paint Job hercimer01!