Plastic Bumpers

J

JSFM35X

Active member
How overly concerned should i be about polishing the plastic bumpers on my car. I have seen a few threads that show the paint "wrinkled" by polishing. I had my rear bumper re sprayed about 4 weeks ago and plan on polishing the entire car in the next week or so weather dependent.



Plan on trying:

Test Pannel 1

SSR 2.5

SSR1

Propolish



Test 2

M105

M205

ULtima Paint Prp



Going to start with Flex and a whitre pad-Speed ? 3-5



to see what combo corrects best and finishes down best.



Any suggestions or advise is always appreciated.



I have a Flex and a PC.



Thanks,



Jeff
 
JSFM35X- I'd probably let the repainted bumper wait a while longer before polishing it. My repaints are seldom at max hardness after just a month.



I've never used the SSR stuff, but I'm pretty sure that M105 is a *whole lot* more aggressive than SSR2.5.



With M105/M205 I use speed 5 for most everything except very gentle final polishing but I can see dialing it down on the plastic parts. DO NOT ramp the speed up from low-to-high with those products as you'll just flash them faster and IMO increase the likelihood of poor results. Just set the polisher on the paint and start working at the chosen speed, work the product until the marring is gone or the product starts to dry out.
 
I've repaired, replaced, painted and polished 100's of bumpers over the years

without issues. Soft clears, super soft clears, rock-hard clears and always

sanded and polished the following day (6 - 15 hours fresh). Sometimes, months

and years later...



If needed, sand to at least 2000 grit.



Work slowly, little to no pressure, watch the edges. Better to take several

passes than one heavy one.



I only use a rotary so can't speak much of the Flex/PC you have.



*The mishaps you read about here, especially from seasoned pros, are extremely rare.*
 
Flashtime said:
I've repaired, replaced, painted and polished 100's of bumpers over the years

without issues. Soft clears, super soft clears, rock-hard clears and always

sanded and polished the following day (6 - 15 hours fresh). Sometimes, months

and years later...



If needed, sand to at least 2000 grit.



Work slowly, little to no pressure, watch the edges. Better to take several

passes than one heavy one.



I only use a rotary so can't speak much of the Flex/PC you have.



*The mishaps you read about here, especially from seasoned pros, are extremely rare.*
Click to expand...



THANK YOU.
 
Just keep a close eye on the heat. Plastics don't respond well to heat. I usually polish my painted plastics with my PC, I have used the rotary but I like the safety cushion.
 
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