Patent ID: 7181993

Claim:
A method for manufacturing a rotatable cutting blade assembly for an extruder, the method comprising the steps of: selecting a substantially circular cutting blade holder made of a first material having two spaced apart faces and having a plurality of cutting blade channels around the outer periphery of the cutting blade holder, the channels forming an angle with respect to a plane defined by the faces of the cutting blade holder; brazing a first end of blade made of a second material in each of said cutting blade channels while an opposite second end of the blade is left free-floating, wherein the blade has sufficient height to extend at least one edge of the cutting blade beyond the plane defined by at least one face of the cutting blade holder, and wherein the blade has a length such that the majority of the length extends beyond the outer periphery of the cutting blade holder; sharpening at least a portion of at least two opposite edges of the cutting blade; and forming a first cutting plane and an opposite second cutting plane, each cutting plane being generally parallel to the plane defined by at least one face of the cutting blade holder for cutting extruded materials, wherein the cutting direction of the first cutting plane is opposite of the cutting direction of the second cutting plane.