Because the smooth texture of the clear coat will reduce the adherance of the following coat. You sand to put small scratches in the slick finish of the undercoats so the next coat will stick to it.
2006-08-29 11:07:52
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answer #1
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answered by Jeffrey S 6
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I figure that the sanding (for which I actually use steel wool) serves to smooth the earlier coat and also to improve adhesion. I've never tried NOT sanding, so I can't tell you how much of a difference it makes. It's a pain, though, having to remove every spec of dust from the surface and from the surrounding area, even with a tack cloth.
2006-08-29 17:11:29
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answer #2
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answered by MailorderMaven 6
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I totally agree with the answers. Air bubbles and improves adhesion but use steel wool, not sand paper. Just be sure all the metal particles are brushed or vacuumed off.
2006-08-29 17:42:27
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answer #3
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answered by Matrix 3
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Because it sometimes causes air bubbles to appear so you have to sand it off. Thats why when I get jobs like that I prefer toy use this thing called 'PE fast drying Polyutherane' I buy it at the Contractors Wharehouse. You dont have to sand it........At All........
2006-08-29 17:20:44
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answer #4
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answered by Anonymous
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I have never bothered with the sanding part as long as the wood is well sealed. By the way, cute pic!
2006-08-29 17:20:22
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answer #5
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answered by Anonymous
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sometimes air bubbles appear and you have to sand them between coats.
2006-08-29 17:12:43
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answer #6
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answered by breezy 2
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