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Old 11-16-2010, 08:56 PM
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painting car in sections

Hi everyone i have been reading all the info on this site about how to paint and you guys seem like you really know your stuff. That being said, i have come across a problem that i havent been able to find on the internet. Im painting my car a very bright white im at work i cant remember what the exact name was. But iv broken up my car into pieces to paint and so far i have paint the rear end and roof at the same time, then the fenders then the doors. After i painted the door i put them back on the car to find that it was more of a vanila white then the bright white the rest of the car was. So i was thinking its my clear coat that i laid my my second coat on kinda think verses when i painted the rear end i paint the second and first nice and even thinner coats. I thought that if it was the clear beinging to thick i could wet sand it and buff it down thinner so that it would match but it didnt help. Which then lead me to believe that maybe i wasnt mixing my paint good enough. I have a gallon of omni base coat white and i stir it for probably about 5 mins or more everytime before i use it. So i dont see how that could have effected the color. This is where im lost, i had all the same air pressure and gun settings and tryed to keep my garage heated about the same. Im sorry for beinging a newb just jumping on here and asking question. If you have any ideas if its the clear or if its the paint im all ears. thanks you very much guys.

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Old 11-16-2010, 09:12 PM
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If you are spraying a solid color then you should have no problem painting it in sections one thing you have to make sure is that you allow enough flash time I have been in a hurry before and clear to soon and it will turn the base a yellow color and white is the worse color to do that
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Old 11-16-2010, 09:13 PM
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I tried to take the best picture i could but it looks worse then the camera will show. hopefully this helps



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Old 11-16-2010, 10:45 PM
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Old 11-17-2010, 12:40 AM
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First off, what color undercoat are you using? Any chance you just didn't get complete coverage? The coverage on OMNI is horrible from my experience so it would be easy for it to be a little transparent exposing more of your primer color.

I've seen something like this before years ago with the old sikkens autobase. It was actually what was explained to me as a "float" that would cause the color to be different depending on how heavy or light it was sprayed. Light and pastel shades of color were the only time you would see it. I haven't seen it in years though. It wasn't a big deal then because we blended almost everything and when I did an overall I painted it all at once.

I've seen clear yellow a bright white before but only because one batch or a different brand was used and the 2nd batch/brand was much yellower. I've never seen clear cause that much color change from the same can only in different areas.

I hate to say it but it looks like it's time to do some blending!
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Old 11-17-2010, 04:32 PM
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Yes you were right i didn't put enough coats on the rear end "damn omni". After you posted that i went out started looking at the car a noticed that it only look like the quarter panels, then i knew it was my primer showing threw here is a nice picture of how i primed it.


I then painted the gas cap door again just to make sure and what do you know it looks great.




Well thanks guys i appreciate your help here is some more picture of what the quarter use to look like.

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Old 11-17-2010, 07:00 PM
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Here is an article that covers just about every thing you need to know to paint a car in pieces or sections.

Click here for the "Baiscs of Basics" to painting a car in sections.

Other than of course as mentioned different undercoat colors and not enough paint applied, or more clear was applied. "More" doesn't always mean more coats, if the gun speed is slowed down, if you use more overlap, there are many reasons to cause more film build of clear.

And yes the amount of clear can change turn the white yellower even if it is the same brand. Some clears are very yellow, the more you add the more yellow it becomes.

Brian
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