A friend has asked me to help him touch up his later C3 bumper; I'm willing to try but not 100% sure how to proceed....is the process the same as for metal/fiberglass? Level out the ding with filler, touch up with base coat and wet sand (can you do that on rubber?) and then clear ?
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Re: C3 "rubber" bumper
You need to use a spreadable flexible material to repair the depressions... otherwise if flexed it can pop the filler.
For major building or repair I use 3M 2 part automix flexible repair -
I prime with Spies Hecker flexible primer... and then base and clear.
I still put flex agent in my clear coat even though I have been told it is not necessarily required any longer.James A Groome
1971 LT1 11130 - https://photos.app.goo.gl/zSoFz24JMPXw5Ffi9 - the black LT1
1971 LT1 21783 - 3 STAR Preservation.- https://photos.app.goo.gl/wMRDJgmyDyAwc9Nh8 - Brandshatch Green LT1
My first gen Camaro research http://www.camaros.org/forum/index.p...owposts;u=4337
Posts on Yenko boards... https://www.yenko.net/forum/search.php?searchid=826453 -
Re: C3 "rubber" bumper
The Spies Primer is essential -you can literally spray a beach ball with it and then deflate the ball a week or two later and the primer remains... even many years later. I saw one of the beach balls sprayed by the Spies rep a few years after the demo and the primer was still fully adhered this was 6-7 years ago I have not painted flexible parts without using it since. Your jobber will be able to point you in the right direction.
I added 1/2 an inch of material to the end of the bumper and did deformation tests - bending the edge to significantly greater than a 45 degree angle in relation to the added material, then primed with the above and base clear.
2012.12.09 047.jpg
2013.02.10 026_rot_crop.jpgJames A Groome
1971 LT1 11130 - https://photos.app.goo.gl/zSoFz24JMPXw5Ffi9 - the black LT1
1971 LT1 21783 - 3 STAR Preservation.- https://photos.app.goo.gl/wMRDJgmyDyAwc9Nh8 - Brandshatch Green LT1
My first gen Camaro research http://www.camaros.org/forum/index.p...owposts;u=4337
Posts on Yenko boards... https://www.yenko.net/forum/search.php?searchid=826453Comment
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Re: C3 "rubber" bumper
That's pretty amazing and nice work too!
Not sure I'm the guy for this job as a "first timer" though - my pal may need to get a pro...Comment
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Re: C3 "rubber" bumper
Frank, Isn't a friends car the perfect car to practice on?Comment
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