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Old 07-04-2010, 08:16 AM
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Orange Peel

hello again guys. This Bowel Movement on Wheels (BMW) that we are painting is really getting the best of me right now. The primmer, and paint went on perfect couldn't ask for better layment. However the clear coat is getting the best of me. I am using Martin Senour Cross Fire Product.
Clear Coat- CC5020 Multi/overall clear coat 4 parts
Harder- CH256 Urethane Harder 1 Part
Reducer- CR234 Med/Slow Reducer 1 part

My gun is set at manufacturer's psi which is 20psi at gun.

The problem= Some parts of the car is as smooth as a baby ***. And some are orange peel. The orange peel area's are around edges, some on the side and on back window towers. I am not understanding why this is. I let it flash before another coat. Usually 6-10 minutes. The sray is even. (Or at least I think it is) The temp outside is about 85 degrees. Not sure on humidity.

However can anyone please tell me why I am getting this orange peel in some areas not not all? And why is it happening? And what can I do o stop it. I am wet sending the car today. And Monday hope to shoot it again. This time WITH NO orange peel.

Any help would be great!!!!! My arms hurt....

Thank you
Krista

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Old 07-04-2010, 08:52 AM
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My guess that you aren't following the contour as well as you could to get peel on the rounded corners. Also, what brand spray gun. Unless it's an Iwata, that pressure might be a bit low - and if an Iwata, a bit high .

The cure - wet sand starting with 800 to 1000 and finishing it off with 2000 to 3000 grit paper - good stuff only like 3M, Norton or Mirka and finally cut and buff with Meguire's or similar 1500 and swirl remover.
Dave W
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Old 07-04-2010, 09:04 AM
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SO then I need to follow my spray all the way around a corner and not stop at the corner. With the sides for example the rear quater pannel is not good. So I should start at door jam and follow all the way around?

The gun is a Sharp and psi at 29. I miss type before.

Krista
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Old 07-04-2010, 09:43 AM
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Originally Posted by glessen
SO then I need to follow my spray all the way around a corner and not stop at the corner. With the sides for example the rear quater pannel is not good. So I should start at door jam and follow all the way around?

The gun is a Sharp and psi at 29. I miss type before.

Krista
You pretty much stop a natural break in a panel or side keeping the gun at a constant distance from that panel so you get uniform coverage. Sometimes you even have to take a step or two. But - if it really isn't too bad, do the wet sanding then re-clear, being careful not to go through the BC and you should be OK. Just don't keep hammering the clear on and hoping that it will end up smooth - ever see clear coat icicles - not fun to fix.
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Old 07-04-2010, 12:14 PM
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what the heck are clear coat icicles?
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Old 07-04-2010, 12:32 PM
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Originally Posted by glessen
what the heck are clear coat icicles?
When you spray too much clear on and not allow it to at least flash it tends to run off - leaving------ icicles and hanging off the edge of that panel
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Old 07-04-2010, 02:37 PM
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When you spray too much clear on and not allow it to at least flash it tends to run off - leaving------ icicles and hanging off the edge of that panel
Those are call "Flow Checks"
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Old 07-07-2010, 04:29 PM
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Crank your gun pressure up to 32psi and open the pattern up some. Also, open the flow for the material up some too.
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Old 07-09-2010, 07:15 PM
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The pressure was at 29psi. I am not sure on flow and all that. However we just re did it and there is less Orange peel. However it is in spots? And at some spots it's almost like a matted finish not even real shinny. What would cause that to go on like that. For example one door panel. The top is good, the middle had a spot of the matted finish like and the bottom edges had the orange peel. I am about to pull the rest of my husbands hair out. And he doesn't have much left.

Krista
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Old 07-09-2010, 09:27 PM
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Quote:
Originally Posted by glessen
.......The temp outside is about 85 degrees. Not sure on humidity......
Krista, you are right on the edge as far as ambient temperature is
concerned. It might be just too darn hot to paint.

In this hot weather we've been having lately, it's best to paint only
in the mornings when it's cooler. It also helps to hose down the floor right before painting; the evaporating water cools the air and adds humidity.
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