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sanding down a fibreglass bumper
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t3hw4h
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Joined: November 14, 2011
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Location: vancouver, BC
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PostPosted: Tue Jan 24, 2012 5:46 pm    Post subject: sanding down a fibreglass bumper Reply with quote

So I have a replacement rear bumper that I need to sand down and paint (black).

Any tips for the sanding process to make it as quick and hassle free as possible?

Any tips for painting it?
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PDXWesty
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PostPosted: Tue Jan 24, 2012 5:48 pm    Post subject: Reply with quote

I wouldn't get too aggressive on it. Use 220-400 lightly and wipe it down. You should be good to go.
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0to60in6min
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PostPosted: Tue Jan 24, 2012 5:50 pm    Post subject: Reply with quote

funny... I am in process to do it too...

thinking using orbital sander w. soft grit and using black bed liner coating...
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t3hw4h
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PostPosted: Tue Jan 24, 2012 7:18 pm    Post subject: Reply with quote

so i don't need to get it down to the white coat? just rough it up a little?
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0to60in6min
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PostPosted: Tue Jan 24, 2012 7:41 pm    Post subject: Reply with quote

you just rough it out, do a under/primer coat, color coat and clear coat, if you fancy to that.

For me just one coat of bed liner is enough, I like a rough looking appearance of the bumpers.
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madspaniard
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PostPosted: Tue Jan 24, 2012 8:11 pm    Post subject: Reply with quote

Funny, I need to do the same as well, my fiberglass bumpers were painted with a professional glossy finish and they now show a fair amount of chips where I can see a white coating underneath, I think I need to remove all the glossy layer down to the white coating for a flat smooth surface before applying bedliner.

Anybody has instructions on how to remove the bumpers and the front body side trims pieces?
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K58
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PostPosted: Tue Jan 24, 2012 10:17 pm    Post subject: Reply with quote

I patched my cracked front bumper with quick cure JB weld, sanded with 3M 400 scotchbrite and sprayed with Napa Stoneguard.
Unlike Bedliner which IMO is way too rough, Stoneguard has a very even light texture that that looks "OEM" instead of "Driveway"

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