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E90/E91/E92/E93 (2006 - 2013)
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  #1  
Old 05-12-2014, 10:11 AM
elilol elilol is offline
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Sanded through something :(

So there was a nice big scratch on the hood of my car that I was sure was only through the clear coat. I decided to sand/polish it out. As I was sanding I noticed the paint around the scratch started to change and a nice nickel size circle formed. I do not know what caused it / how to fix it and what exactly happened. I used 3000 grit paper, very soft sand paper. What do I do?
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  #2  
Old 05-12-2014, 10:17 AM
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Orient330iNYC Orient330iNYC is online now
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you need a repaint. you sanded through the clear, through the base layer, and through the primer in the center. very likely the whole hood will need to be repainted, and the fenders blended.

no way to fix that now, sorry to say.
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Old 05-12-2014, 10:23 AM
elilol elilol is offline
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Hows that possible? I sanded for only about 3 minutes if not less. When I rub my hand through the area and through that part there is no change at all .
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Old 05-12-2014, 10:34 AM
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Orient330iNYC Orient330iNYC is online now
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Quote:
Originally Posted by elilol View Post
Hows that possible? I sanded for only about 3 minutes if not less. When I rub my hand through the area and through that part there is no change at all .
that scratch is through the clear and into the base coat. car paint is super thin, we are talking about a few mils of thickness. 3000 grit sand paper on a sanding block in one area will go through the clear, base, and primer very quickly.

if you cant remove a scratch with polishing compound, sandpaper is going to make it worse as its too deep.

were u sanding it wet or dry?

you can see bare metal starting to peek out in the center of that spot. there's no way to salvage that without a respray of the hood.
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Old 05-12-2014, 10:37 AM
elilol elilol is offline
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I was sanding it wet, what if I buy the OEM Factory paint and apply it to that spot then sand it down to match? will that work?
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Old 05-12-2014, 10:48 AM
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nope, it needs to be matched. You kind of "went to 11" on that one...if it makes you feel better, I did a similar thing to a crease on my wife's Z4 trunk when I scratched it with a belt buckle and tried to "fix" it.
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Old 05-12-2014, 11:06 AM
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Quote:
Originally Posted by elilol View Post
I was sanding it wet, what if I buy the OEM Factory paint and apply it to that spot then sand it down to match? will that work?
There's really no way to fix it diy. Needs to be repainted or else the repair will be obvious
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Old 05-12-2014, 12:26 PM
fdriller9 fdriller9 is offline
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Old 05-12-2014, 01:50 PM
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If you could feel the scratch with your fingernail before you started, it was already over and needed a respray. You could have filled the scratch with paint over time and then lightly sanded that.
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Old 05-12-2014, 02:10 PM
Roleez Roleez is offline
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Went through the same situation with a Honda Accord in my 20s. Sanded a hood chip too far after a touch up with OEM paint in a bottle. Repaired surface was smooth to the touch ... but the repainted area was definitely darker than the rest of the hood, much like getting a drop of cooking oil on a white napkin. Bothered the hell out of me for 17 years. Then I got a scratch and rock chip/dent on my E92's hood a year ago. Amazing what a resprayed hood does to eliminate mental stress.
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Old 05-13-2014, 05:29 AM
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Quote:
Originally Posted by ///M-ratedE90 View Post
nope, it needs to be matched. You kind of "went to 11" on that one...if it makes you feel better, I did a similar thing to a crease on my wife's Z4 trunk when I scratched it with a belt buckle and tried to "fix" it.
"Hon, remember that little scratch you could hardly see on the trunk where I fell in trying to get out the case of Fosters? Well...um...you can't see the scratch anymore!"
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