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The front and rear bumbers on my '77 had been primered over when I got the car. The problem is it is starting to crack and flake off where the bumper has been flexed.
My questions are this: 1. Isn't there something that has be added to the primer (or paint for that matter) to keep it from cracking? 2. What is the best way to get the primer off? Chemical stripper? Sanding? or? :confused: -- Thanks, Fred Schramm Pontiac Power http://www.pontiacpower.net [ August 31, 2002, 12:35 AM: Message edited by: Fred ] |
The front and rear bumbers on my '77 had been primered over when I got the car. The problem is it is starting to crack and flake off where the bumper has been flexed.
My questions are this: 1. Isn't there something that has be added to the primer (or paint for that matter) to keep it from cracking? 2. What is the best way to get the primer off? Chemical stripper? Sanding? or? :confused: -- Thanks, Fred Schramm Pontiac Power http://www.pontiacpower.net [ August 31, 2002, 12:35 AM: Message edited by: Fred ] |
There is a product by 'Mar-Hyde called 'Urethane Parts Paint Remover'. You sray it on and it foams up a little like regular paint stripper. Be careful not to get it on your plastic parts (spoiler, wheel arch spats) as it will eat them.
There are additives and surface treatments you should use prior to and mixed with the paint to prevent the crazing and cracking. Adhesion promoter and paint rubberizer I think. A paint supplier will be better qualified than me to sell you what you need for your type of paint. |
Im prefer to sand the imperfections out w/ 220 paper/discs.
The primer should be a "flexible" type or have the flex agent that you add. Most of the current premium urethane paints do not require the flex agent. The clear-coat system you use does need the flex agent. You may want to post this in the body work section. It'll probably get more appropriate responses. |
Thanks for the info, Larry. I will also post on the body section, I didn't realize there was one for body :eek:
-- Thanks, Fred Schramm Pontiac Power http://www.pontiacpower.net |
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