paint cracks on front bumper

[Belgian1979vette]

I was finishing up the primer on my front bumper today, when I discovered some small crack around the bumperette on the top corners (where it meets the rest of the bumper). The cracks run all the way through the primer. Any idea what this could be ?

Thanks

Yves

 

[Blackfinn]

Does the primer have "Flex agent" in it? Some do and some you have to add it in. Only thing I can think of unless it was applied too thick and cured too fast. ......Or the bumper it self is cracked.???

 

[Belgian1979vette]

Nope, the paintsupplier told me that there was no need to put extra additive in it. It has only cracked in that particular spot.

I already sanded it down, seems that it didn't quite attach to the black primer that was on the bumper. Guess that is the problem. I will have to do it over again.:waxer:

 

[Blackfinn]

I would never paint anything now-a-days with out flex agent. Especially FRP or ABS, etc.

Hope you get it sorted out. Cheers.