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Old 08-14-2006, 08:43 PM
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Can you respray clear over dried clear..

If you have a panel and it needs more clear..can you scuff the existing clear with 600 grit and then respray clear over it and have it stick properly? I have done this before on a piece and the clear absorbed the 600 grit marks and it looked clear and perfect. But I want to know if this is safe or will it seperate down the road? Thanks
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Old 08-14-2006, 10:08 PM
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Should be no problem.
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Old 08-14-2006, 10:25 PM
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Yes, as long as you don't sand through the existing clear into the base. If you do then you will need to apply more base and blend where you have cutthroughs. I go a little finer myself, around 800 wet, but have seen others recommend 600. See the southernpolyurethanes.com article the perfect paint job. Also do a search for flow coat on here. This is done by many on a regular basis. It is also how repairs are done in collision shops. The whole panel is sanded (1000 grit most places I worked) and the area needing repair with around 600. Base is sprayed and blended on the repair area, and the whole thing cleared. So essentially, you are spraying new clear over sanded old clear. Only thing to watch for if it is real fresh and you could possibly get lifting when you spray on the base.

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Old 08-14-2006, 10:26 PM
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600 grit?

I would advise you step down at least to 800 grit. The scratches may fill with 600, but my concern would be sand through. Color sanding and re-clearing is a common and great way to get a real slick finish. You need to realize that if you sand through the clear, You'll be spraying color again. I'd hate to see you go back-wards.
Good Luck

Sorry Kenseth same time man same time.
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Old 08-14-2006, 11:46 PM
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I had no idea it was a common thing to do this. So should I wait for my existing clear to really dry and gas out so there is no bubbling of some sort? What advantage does this have that it was a common thing? Did it allow more layers of clear for that deeper look? Thanks
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Old 08-15-2006, 05:13 AM
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Quote:
Originally Posted by makaveli200369
I had no idea it was a common thing to do this. So should I wait for my existing clear to really dry and gas out so there is no bubbling of some sort? What advantage does this have that it was a common thing? Did it allow more layers of clear for that deeper look? Thanks
If you are worried about that (solvent pop), just set the panel or car in the sun for a day after you final sand it.

Vince
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Old 08-15-2006, 09:14 PM
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Oh ya

It's common because it's a great way to really detail the surface of your paint job. Every coat of base and clear adds just a little more texture (orange-peal). By sanding it flat and re-clearing we can get a smoother surface. And that means easier color-sanding and buffing with an excellent finished product. As for the wait I'd say it depends on what clear you are using. But, sanding it (opening the surface) and putting it in the sun for a day is a great idea.
GOOD LUCK!
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Old 08-18-2006, 10:54 PM
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Another question. Does laying clear like this make it less durable? Meaning in the future being out in the sun etc. will it cause it to seperate from the orginal clear you are shooting on top of? I am thinking about doing it to my hood to get more detail and a even flatter surface from the previous wet sanding/blocking of the clear. What do you think?
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Old 08-19-2006, 03:00 PM
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Great idea!

I think it's a great idea! No, you certainly should not have any trouble with durability. An old saying " There's no better under-coat than a good top-coat!"
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Old 08-21-2006, 07:46 PM
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I've done it many times. you want have a problem at all.
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