June 23, 201411 yr Yes just not as good as a clean screw thread; however I have seen vises used until the screw thread was *sharp* at the top! It's like mileage on a car---can you drive a car with 100,000 mile on it? Sure; it's just not going to last as long as one with only 20,000 and you should *not* pay the same price for it as the one with 20,000!
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