Title: Cutting tool

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Abstract: A cutting tool with a holder and a removable insert that has a flat positioning surface and a cutting edge located in the plane of said surface. The insert is carried in a slot of the holder, with the positioning surface of the insert clamped against a locating surface of the holder that in part forms the slot. The locating surface of the holder orients and locates the insert and, hence, the cutting edge in a plane that remains unchanged after the cutting edge is sharpened by grinding and lapping the positioning surface of the insert. Where the cutting edge is formed in a tip or bit of diamond or other cutting material different from the insert, the tip or bit need not be removed from the insert and reset for grinding or lapping. In use, the insert is clamped to the holder intermediate its ends and contact with the locating surface is restricted to spaced areas on opposite sides of a clamping screw. Longitudinal adjustment of the insert relative to the holder is afforded by an elongated slot in the insert, through which the clamping screw extends.


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