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Old 10-11-2007, 11:38 AM
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help with sanding metallic base

When doing a bc/cc is it ok to wet sand a metallic base before the clear goes on?

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Old 10-11-2007, 11:44 AM
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Quote:
Originally Posted by Samsonian
When doing a bc/cc is it ok to wet sand a metallic base before the clear goes on?

I always go wet on wet but I dont think it would hurt anything, not really sure though. If you mess it up you will likely have to redo the whole job because most metallics are hard to match. I know its not much help but if it was me I would try to go wet on wet.
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Old 10-11-2007, 11:52 AM
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what if the base isn't real smooth? will it be covered up by the clear after sanding and polishing?
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Old 10-11-2007, 12:22 PM
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Quote:
Originally Posted by Samsonian
what if the base isn't real smooth? will it be covered up by the clear after sanding and polishing?

The clear is what makes the paint job, after you clear and polish it you will be supprised at the results. Just make sure to put three coats of clear on to give you material to work with when you polish. Also dont worry about making it look slick on the first coat, take your time and put light coats on let the last coat be the slick one. This way if you do get a run it will be on the last coat and you can get it out easy.
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Old 10-11-2007, 01:02 PM
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Don't sand the base, Interesting test on sanding base coat paint (against the data sheets recommendation)

But if you have to "scuff" it for some reason, it MUST be recoated with color prior to clear.

Brian
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Old 10-12-2007, 08:33 AM
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Thanks everyone

I understand much better now.
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Old 10-12-2007, 10:13 AM
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In addition to Brian's link which I glanced over and he was Dead Nuts On to what I was always taught. I dodn't notice if there were mention of the fact the scuffed and cleared base also has a totally different look to it. If you sand metallic color coat before clear, it ruins the metallic and gives a very dull almost non metallic look to the sanded area.

I hope I didn't step on anybody's toes with this post. Brian/Martinsr always has the right answer whenever I have read his replies.
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Old 10-12-2007, 12:44 PM
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Brian Martin,Freelance adviser
 
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"Always right", far from it, but I am eager to discuss and learn. Your points on look are well taken. Of course, the point of my test was strictly just about the adhesion issue.

Brian
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Old 10-12-2007, 01:24 PM
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Quote:
Originally Posted by MARTINSR
"Always right", far from it, but I am eager to discuss and learn. Your points on look are well taken. Of course, the point of my test was strictly just about the adhesion issue.

Brian
Ok, we will correct it from always to 99% of the time. The adhesion problem is why I am repainting a twice before dealership painted 85 Monte SS. The clear peeled on the first repaint so the guys cousin who has worked for a dealership body shop the last twenty + years sanded the base before clearing. The second time, they let the base dry overnight and then cleared it. I am guessing some people just take no pride in their workmanship.
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