Cutting edges for reamers and a method for making same

摘要

A new and improved reamer having a plurality of openings therein. Each of the openings have a periphery and a cutting edge selected from the periphery. Each of the cutting edges are bound by opposite portions of the periphery. The opposite portions are extended past the cutting edge in a direction opposite of the direction transverse of the cutting edge whereby the cutting edge may be shaped as desired independently of the shape of the periphery.