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Old 03-25-2005, 11:30 AM   #1 (permalink)
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Question

I was finishing the brake job last night on the Bimmer, and noticed some very light rust around the edges of the wheel well. I was thinking some light sandpaper (say, 400, 800 and 1000 grit) followed by a prime and paint to remove it. Any thoughts?

How hard is it to do this? The rust hasn't penetrated through metal, and I can definitely remove it without wearing through, but any words of advice?
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Old 03-26-2005, 12:40 AM   #2 (permalink)
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If it is as light as you make it sound, the first thing I would try would be to clay the rust. I know that sounds funky, but I have had it work with small rust blooms on all types of vehicles.
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Old 03-26-2005, 11:32 AM   #3 (permalink)
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Problem is, it snuck under the paint. Don't think claying will work, will it?

When I repaint it, how do I get a smooth coat? I own an airbrush, but I'm awful leery of using on the car.
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Old 03-27-2005, 05:06 PM   #4 (permalink)
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You don't have to use sanding paper and risk damaging your car. WHen i had a similar problem i went to autozone and bought rust remover. Its a jell/liquid solution that removes the rust without much effort.
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Old 03-27-2005, 06:36 PM   #5 (permalink)
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Since it's under the paint, how do I do this? Scrape off the loose paint then apply the remover?
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Old 03-27-2005, 08:28 PM   #6 (permalink)
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Originally posted by Casey3561@Mar 27 2005, 04:36 PM
Since it's under the paint, how do I do this? Scrape off the loose paint then apply the remover?
[snapback]319638[/snapback]
If it is "under" the paint, how in the hell can you see it. Wouldn't it be "under" the paint and therefore not visible to you???

I guess I don't understand. Can you take a pic of it?
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Old 03-27-2005, 08:39 PM   #7 (permalink)
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Quote:
Originally posted by MaThGr82+Mar 27 2005, 08:28 PM--><div class='quotetop'>QUOTE(MaThGr82 @ Mar 27 2005, 08:28 PM)</div><div class='quotemain'><!--QuoteBegin-Casey3561@Mar 27 2005, 04:36 PM
Since it's under the paint, how do I do this? Scrape off the loose paint then apply the remover?
[snapback]319638[/snapback]
If it is "under" the paint, how in the hell can you see it. Wouldn't it be "under" the paint and therefore not visible to you???

I guess I don't understand. Can you take a pic of it?
[snapback]319681[/snapback]
[/b][/quote]

Maybe it's under the clear-coat? Doesn't rust only occur as a result of the oxidation of metal? e.g. the metal IS rusting.
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Old 03-28-2005, 12:03 AM   #8 (permalink)
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If it is "under" the paint then you could see the paint start to bubble out right? You don't actually see the rust just a bit of a bubble and maybe some cracks from it.
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Old 03-28-2005, 11:24 AM   #9 (permalink)
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There's some bubbling and minor cracking. When I say it hasn't penetrated, I meant that it hadn't broken through to the other side- i.e. it could still be sanded.
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Old 04-13-2005, 10:21 PM   #10 (permalink)
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put that sandpaper down cowboy were going to handle this one with clay.
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