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Old 11-18-2004, 05:18 PM   #1
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Default do you wet sand/sand after primer?

is it nescessary? just trying to paint something small.
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Old 11-18-2004, 05:21 PM   #2
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Default Re: do you wet sand/sand after primer? (1.8)

Yes, you need to wet sand.
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Old 11-18-2004, 05:23 PM   #3
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Default Re: do you wet sand/sand after primer? (1.8)

yes, def wet sand the primer if u want it to look like glass
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Old 11-25-2004, 01:08 AM   #4
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Default Re: do you wet sand/sand after primer? (hybrid97coupe)

what grit do you guys use? can you give me some tips? i've heard of people using different grits.
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Old 11-25-2004, 05:41 AM   #5
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Default Re: do you wet sand/sand after primer? (1.8)

Spray on your primer, let it dry for at least a day. You will be able to feel a texture in the primer.

Run water from the hose or faucet over the piece and sand it lightly w/ 400 until all the texture is gone. Go over it again lightly with 600 grit.

Let that fully dry then spray on your paint, however many coats it takes to fully coat it. After that spray on your clear, however many coats you want. If you intend to wetsand and buff the clear (to really make it shine like glass) I would suggest between 3-5 coats of clear.

After the clear, it will have that same bumpy orange-peel-like texture that the primer had. So now after you let that dry for at least a day, go over it under running water w/ some 1200 grit, and finish up with 2000 grit.

Finally use a good buffing compound like that from 3M, then polish, and then wax. Click the image to open in full size.
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Old 11-25-2004, 12:56 PM   #6
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Default Re: do you wet sand/sand after primer? (PatrickGSR94)

thanks!!

anyone else with tips?
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Old 11-25-2004, 01:12 PM   #7
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Patrick. too many useless steps.
Primer, wait till it drys, run water over and wet sand with 600grit. I really don't know how to explain how you should know you wet sand enough. But if you look at the primier at an angle, you can see the smoothness. Can't really feel it.
Now go paint your car correctly and dry it in an oven for 20mins. If you did so, you won't have to waste time wet sanding the clear coat to get rid of the orange peal.
There's a real reason why Dupont painters paint the car correctly the first time. Time = Money.

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Old 11-25-2004, 01:25 PM   #8
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Default Re: (NrG)

Quote:
Originally Posted by NrG
Patrick. too many useless steps.
Primer, wait till it drys, run water over and wet sand with 600grit. I really don't know how to explain how you should know you wet sand enough. But if you look at the primier at an angle, you can see the smoothness. Can't really feel it.
Now go paint your car correctly and dry it in an oven for 20mins. If you did so, you won't have to waste time wet sanding the clear coat to get rid of the orange peal.
There's a real reason why Dupont painters paint the car correctly the first time. Time = Money.

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yes soo true.. so many people look over baking the car Click the image to open in full size. man but you put it best when doing the body, Time is most certainly = Money.. I like how you found that qutoe about Dupont guys Click the image to open in full size. thats true also, many of the Dupont painters i know are rolling in the doe over the PPG guys in my area, b/c they charge a lot and their paint jobs compared to a PPG paint job is Secon to None.. i have seen it countless times that Dupont Clear is Killer.. but yah most of the Dupont guys in my area deal with the higher end folks BMW, Mercades, Ferrari, Porsche etc so they charge more then the PPG (it all pref. really if you know what your doing, but the DUPONT CLEAR, i dunno its crazy stuff).. but enuff of my rambling LOL i just liked the qutoe about Dupont guys..
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Old 11-25-2004, 02:04 PM   #9
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Default Re: (manikgsr)

good info
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Old 11-25-2004, 02:18 PM   #10
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Default Re: do you wet sand/sand after primer? (1.8)

if u want less sratches sand the primer with 600, 400 some times car leave sratches and after clear sand with 1200 the polish with compound the glaze after i wolud come out way cleaner Click the image to open in full size.
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Old 11-25-2004, 03:18 PM   #11
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Default Re: do you wet sand/sand after primer? (JDMblueDA9)

would 1200 be too course for for clear coat? or should i go with 1500?
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Old 11-25-2004, 04:29 PM   #12
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Default Re: do you wet sand/sand after primer? (1.8)

or 2000
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Old 11-26-2004, 10:21 AM   #13
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Default Re: (NrG)

Quote:
Originally Posted by NrG
Patrick. too many useless steps.
Primer, wait till it drys, run water over and wet sand with 600grit. I really don't know how to explain how you should know you wet sand enough. But if you look at the primier at an angle, you can see the smoothness. Can't really feel it.
Now go paint your car correctly and dry it in an oven for 20mins. If you did so, you won't have to waste time wet sanding the clear coat to get rid of the orange peal.
There's a real reason why Dupont painters paint the car correctly the first time. Time = Money.

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Useless steps? I don't think so, if you want the best finish.

And when the finish is not shiny (i.e. primer, flat finish), it's ALOT easier to find imperfections by feel than by sight. It's VERY easy to tell where you've sanded and where you haven't by touch. For very small dents and stuff, it's pretty much impossible to see it if the surface doesn't reflect any light, so you have to go by touch. When we were taking the dents out of my car, after using the tiniest amount of filler and primer, we would then sand and then run our hand along the area to make sure it was straight and the imperfections were in fact removed.

And my friend who painted my car, he said at the car dealership where he paints cars, usually they just go over the whole car with 320 prior to painting. Like you said, time = money, and they're trying to get the cars in and out. But with my car we did 400 first, and then took it a step farther with 600 to ensure that all the primered areas on my car as well as all other areas were as smooth and straight as possible before spraying the base and clear coats on.

Quote:
Originally Posted by 1.8
would 1200 be too course for for clear coat? or should i go with 1500?
Start with 1200, then go up to 2000, then follow with a buffing compound to remove the "haze" left by the 2000 grit paper and make it shiny.
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Old 11-26-2004, 03:14 PM   #14
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Default Re: do you wet sand/sand after primer? (1.8)

Im a part time painter Click the image to open in full size. . 2000 grit Click the image to open in full size.
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Old 11-26-2004, 03:31 PM   #15
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Default Re: do you wet sand/sand after primer? (B18B-TURBO)

so 1200 won't make the clear coat go away, right? i'll go out and get that then. thanks.
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Old 11-26-2004, 04:21 PM   #16
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Default Re: do you wet sand/sand after primer? (1.8)

cough cough::sikkens is better::cough cough Click the image to open in full size.
but yah what they said.....
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Old 11-28-2004, 11:04 AM   #17
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Default Re: do you wet sand/sand after primer? (1.8)

Quote:
Originally Posted by 1.8
so 1200 won't make the clear coat go away, right? i'll go out and get that then. thanks.
Not if you put enough coats on it. When my friend painted my car, he sprayed about 4 coats of clear on it so that the clear would be at least 3 coats thick after the final wetsanding and buffing.
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Old 11-28-2004, 11:24 AM   #18
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i was thinking, if we throw the car in the oven, what is the temp used for 20 mins
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