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Old 05-30-2010, 09:28 AM
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drop coat for metallic

Should a drop coat be done panel at a time or wait till the complete car has the last coat and then do a drop coat all over. Panel at a time while still wet would seem like it would mess up the last panel that was drop coated. I hope you can uderstand this question, I don't know another way to word it.

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Old 05-30-2010, 09:33 AM
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Are you painting in pieces or all together? If it is all together you paint each coat completely around the car. Drop coat is the same.
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Old 05-30-2010, 10:09 AM
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The question was based on painting a car all together and the only reason was because most people say you can't get a good color match painting in pieces. I've seen some cars painted in pieces and the metallics/color looks fine. If it was a solid color I would do it in pieces, still havn't decided how I'm gonna paint this one.
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Old 05-30-2010, 11:02 AM
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Yes, painters paint cars in pieces ALL the time and dont have problems with them matching. BUT, you won't KNOW it doesn't match until you get the pieces together on the car. Then, what are you going to do. There is a high dollar shop here in a suburb of KC that built a Cougar convert that has been in the magazines. I seen it up close at GoodGuys last year. I could tell from 100 yards away that the car was painted in pieces. There are ways to lessen the chances of a mis-match by painting the pieces the way they are on the car. But then you have to be SUPER carefull assembling everything. If you feel comfortable in your abilities, then paint in pieces. If not, or you just don't want to take a chance, unbolt everything, edge everything in and the reassemble. If you scratch the edges of anything, they can be repaired when you paint the outside. Then you are GUARANTEED the panels will match each other.
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Old 05-30-2010, 11:39 AM
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I only paint a panel or two at a time, and go back right away and drop coat them. The idea is you still want it to be wet enough to accept your drop coat, so the drop coat is not just sitting in a dry thin coat on tp. Too dry, and besides a rougher surface to bury in the clear, Its possible that the adhesion-life of the clear coat could be affected.
Some times you are forced to dry spray the basecoat, like to form a barrier when doing a repair and it wants to attack and lift a cutthrough, but in general a dryly sprayed base is not the best practice. The goal is to spray the base on smooth and wet, not overly wet and heavy that can cause problems like solvent trapment and will only contribute to mottling, but not dry either, if that makes any sense.
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