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Question for you painters (auto body)
I just received 2 parts back for my other car that a body shop painted. They did a pretty bad job (I didn't end up paying.) There are some glitches in the paint. They told me I could wet sand them and buff them out. What grit sandpaper should I use and what should I use to polish them. They are clearcoated metallic.
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John Original owner '81 911SC blackmetallic coupe. Terbatrol, SSI, M+K Gen 4, SC+ cams, A/C delete, console delete, heater backdate, 7 & 8 x 16 Fuchs with polished rims, Turbo tie rods, tensioner update, Rennline engine mount bar, Mainely Custom sump plate, new top-end, corner balance. |
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11-01-2007, 01:22 PM
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Friend of Warren
Join Date: Oct 2000
Location: Lincoln, NE
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You need to post a pic. Glitches covers a wide array of mistakes.
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Kurt V No more Porsches, but a revolving number of motorcycles. |
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11-01-2007, 01:46 PM
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I hate freight charges
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The color will also dictate what grit to use as well. On darker colors like black I like to use 2000 grit. Lighter colors like bright reds, whites, yellows I'll use 1500 but that's just me. I'm sure there'll be others chiming in.
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Tom 78 911SC SC to 73RS imposter SCWDP crew #50 and 51 1969 Camaro "The new project" 
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11-01-2007, 03:36 PM
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I'm curious as to why they didn't wet sand themselves. If the 'glitch' is in the clearcoat then yes they can be wet sanded out, if they're in the basecoat you're SOOL. But you shouldn't have to start with anything less than 400 grit. I'm with Kurt, post a couple pics.
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O2 In Sully We Believe |
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11-01-2007, 03:37 PM
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1500 or 2000 grit and then wizard's finish compound. the stuff works incredible. You can find it at paint shops
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11-01-2007, 03:46 PM
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John,
Who did you use? I'm in the market for a paint job...and would like to know who to stay away from. If you don't want to make it public, PM me. Thanks.
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Matt. 83 911SC 85.5 944 NA - Sold |
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11-01-2007, 03:49 PM
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Do you know what brand of clear did they used or how much did they spray?
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"EVER SINCE EXCUSES WERE INVENTED, EVERYBODY IS PERFECT" http://axiom-motorsports.com/ Rudy Ruano, Operations Manager. Joseph Toliva, guy who signs my check |
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11-01-2007, 05:43 PM
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Quote:
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John Original owner '81 911SC blackmetallic coupe. Terbatrol, SSI, M+K Gen 4, SC+ cams, A/C delete, console delete, heater backdate, 7 & 8 x 16 Fuchs with polished rims, Turbo tie rods, tensioner update, Rennline engine mount bar, Mainely Custom sump plate, new top-end, corner balance. |
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11-01-2007, 07:02 PM
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It's really hard to post pics. The pieces are fiberglass, and I think the prep work was shoddy. Since the paint is dark grey metallic, it's hard to photograph. Some of it is like blobs in the first photo:
 And like pinholes in the second photo: 
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John Original owner '81 911SC blackmetallic coupe. Terbatrol, SSI, M+K Gen 4, SC+ cams, A/C delete, console delete, heater backdate, 7 & 8 x 16 Fuchs with polished rims, Turbo tie rods, tensioner update, Rennline engine mount bar, Mainely Custom sump plate, new top-end, corner balance. |
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11-01-2007, 07:19 PM
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Insert Tag Line HERE.....
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It takes ALOT of work to prep fiberglass right. It also depends alot on the quality of the material. Pinholes in glass is actually quite common. The pinholes will have to be filled, primed and painted again, the splotch is hard to tell from the photos. . Is it just in the clear coat, or lower? Or did they even use a two stage process?
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11-01-2007, 07:34 PM
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Based on the images - Wet sanding is NOT going to fix what I see.
The first image seems to show an area that is either an air bubble or a poorly prepped area. The second image seems to show an area that has indentations that will need to be filled and sanded. Bottom line, both areas will need to go back down to the base and re prepped and shot.
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pozee |
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11-02-2007, 01:23 AM
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Well the pics answered my question, why they didn't wet-sand the defects, you can't!!!!
The 2nd pic could also be fisheyes/craters. But yes basically you need a new paint job, WITH the proper prep. Good luck
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O2 In Sully We Believe |
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11-02-2007, 06:11 AM
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Thanks for all the replies. You guys are really experts! Went to the body supply place and had a long conversation with the owner. Referred me to a shop that I think will make it right.
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John Original owner '81 911SC blackmetallic coupe. Terbatrol, SSI, M+K Gen 4, SC+ cams, A/C delete, console delete, heater backdate, 7 & 8 x 16 Fuchs with polished rims, Turbo tie rods, tensioner update, Rennline engine mount bar, Mainely Custom sump plate, new top-end, corner balance. |
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11-02-2007, 06:34 AM
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Before anyone bashes the body shop, what were they charging you?
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11-02-2007, 06:50 AM
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wow, just like that and you didn't have to pay? I would say they are too nice.
On the first pic, I would use very fine wet sand, then buff. I wouldn't use buffer machine if it's only that spot you want to buff. Blue magic, hand buff, is good enough. Just an individual opinion.
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Fat butt 911, 1987 |
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11-02-2007, 10:02 AM
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1981 Porsche 911SC
1978 Porsche 911SC 3.0
My Carrera
Miata of Doom!
1983 Porsche 911SC
78 Porsche 911 Turbo
1972 porsche 72 rsr clone
1995 porsche 993
1995 porsche 993
1990 porsche C2 911
1966 porsche 911
1984 Porsche 911
2003 Porsche 996
