What sanding grit to use to repaint a bumper cover to different color?

Tiny
ROYCAR71
  • MEMBER
  • 1998 GMC JIMMY
  • 4.3L
  • V6
  • 2WD
  • AUTOMATIC
  • 160,000 MILES
I replaced my bumper cover with a bumper cover from a salvage yard with different color and did body work. Now I want to repaint it to the color of the base color of my car what sanding grit do I use to scuff the whole bumper to prime it and then repaint it?
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Tuesday, May 26th, 2015 AT 1:52 PM

5 Replies

Tiny
HMAC300
  • EXPERT
You have to use special primer on plastic prior to paint. Scuff with either 320 or 400 grit prior to primer then rescuff with 400 after primer
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Tuesday, May 26th, 2015 AT 3:12 PM
Tiny
ROYCAR71
  • MEMBER
Does this exclude Rustoleum's sandable primer all purpose fast drying primer?
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Tuesday, May 26th, 2015 AT 3:55 PM
Tiny
HMAC300
  • EXPERT
Yes it does rubber bumpers take a special adheshive type primer a lot of major auto parts have it with their duplicolor stuff
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Tuesday, May 26th, 2015 AT 4:04 PM
Tiny
ROYCAR71
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Lastly, is it ok to use grease and wax remover over the finish bondo repair?
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Tuesday, May 26th, 2015 AT 4:17 PM
Tiny
HMAC300
  • EXPERT
Bondo shouldn't need that only rest of bumper of course it should have been done prior to starting.
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Wednesday, May 27th, 2015 AT 6:52 AM

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