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Old 07-31-2004, 08:57 PM
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A perfect cut will look like a music CD. Lathes will start to cut to a mirror finish when the bits are starting to get dull. Then its not cutting as much as its pushing the metal around.

For years the standard cutting lube has been a plain old Sharpie marker. It lubricates just right and help minimize the amounts of copper you cut off..
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