Title: improves broken bits
Product review: If it is possible to get a bit properly aligned in the chuck, the excessive play in the fit of the chuck in the grinder will insure that only luck will get you a passable tip. The diamond grinding wheel works well at removing material rapidly, to bad there is no way to accurately control where it removes it. I reduced several dull bits to dust before I came close to getting a tip that would likely make a rough hole in soft wood. Save your money and buy new bits or a professional sharpening grinder.
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