1971 Chevy C10 Auto Glass Installation - Project Get Shorty
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Here's another crucial thing to keep in mind: The 24-grit discs are pretty much good for one to two full passes across the windshield. After that, they get dull and don't cut nearly as good (when you change discs you'll see the difference immediately). When they get dull, a couple of things happen: First, it takes so much more effort to cut the glass that you run the risk of the glass heating up and breaking. Second, the dullness of the disc doesn't cut the glass nice and clean-it begins to kind of chip away at the glass (as shown in the picture), which can also crack the windshield. Therefore, eat the $2 it takes to pick up a disc and toss the old disc as soon as it begins to dull. A few dollars here and there is a whole lot less than buying a new windshield to replace a cracked one. View Related Article
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