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Old 01-13-2008, 08:30 PM
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color sandig louvers

Here goes I'm sure most of you have fought this before. I have a hood that I just painted for a guys car that is full of (you guessed it) louvers!!. now these are the small louvers like rootlieb uses on thier hoods.and i have around two inches between the rows.I am NOT capable of laying perfect flat no orange peel paint < that also has not one spec of dirt in it>. so i will be forced to colorsand and buff it. Their is roughly 105 louvers to individually sand etc etc,My question is (because I always fight it ) when you are sanding each of these little louvers how do you keep from putting really deep scrathes in the flat spots between the rows. I probably can't explain it very well but i will try. every time you come off the louver you put deep scratch's in the flats between the rows because you have a small piece of paper folded in half and your sanding with the tips of your fingers. Ever took a piece of sand paper folded it in half and then sanded withe the folded edge?( NO of course not it would leave horrid sand scratch's that are almost impossible to get out). That is what happens when you sand a louver though because your paper comes off of one angle wear you are sanding flat to another that lets the paper cut in with its edge. For those of you who have tackeld this before you will know exacty what i am battleing. I gave thought to the new sanding sponges but 3m in my are has course medium and fine. I do know of one shop that has gotten some up to 600 grit but that is a long ways from final sanding when you need to buff it out. And of course any one who has tackeled this type of stuff before knows that nothing will drive you to drinking,drugs,etc,etc, than getting half way through and sanding or buffing through one of the many edges from the louvers and its back to square one.
So if any one out their can let me in on some tricks or technique they have used to get through this proccess I woul be grateful. We may be proffesional sanders but I don't care to do it over and over again as a matter of enjoyment!!!

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Old 01-13-2008, 08:49 PM
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There is no way I would even attempt to color sand and buff louvers. On my 34 I was especially careful to lay the clear down exceptionally smooth. I over reduced it and used the slowest reducer PPG makes. I layed the hood side pieces out flat so as to minimize runs. What I wound up with required no buffing or color sanding. But I must be honest, I had some help in the way of a pro painter and the use of his Iwata gun....which made just a little difference .

Vince
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Old 01-13-2008, 11:24 PM
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I have painted a lot of louvered hoods, most of them in lacquer. Sanding and buffing every single one of them. The sanding of them real well prior to the last coats is the best defense. In other words, using a "flow coat" is the trick. Sand it PERFECTLY prior to that last couple of coats so very little buffing is needed.

As far as the sand paper, you can use the regular paper, just don't let it dig in on the edge. It isn't that it "will" dig in, it will only do what you let it do, you are in control, not the paper. If you roll up the edge a little, keep it flexable by rolling it good and letting it soak in the water before using it. There is no reason what so ever not to use regular paper.

Brian
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