Patent ID: 7472573

Claim:
A method for cutting material comprising the steps of providing; a first rotatable member having a first blade which is comprised of only carbide, a second blade which is comprised of only steel, and a third blade which is comprised only of steel, wherein said second and third blades are respectively and operatively disposed at opposite sides of said first blade, thereby causing said second blade to be operatively positioned between said third blade and said first blade; a second rotatable member having a fourth blade which comprised only of carbide, a fifth blade which is comprised of only steel, and a sixth blade which is comprised only of steel, wherein said fifth and sixth blades are respectively and operatively disposed at opposite sides of said fourth blade, thereby causing said fourth blade to be operatively positioned between said fifth blade and said sixth blade; wherein said first blade is constrained to selectively and cuttingly engage only said fourth blade, wherein said second blade is constrained to cuttingly engage only said fifth blade; and wherein said third blade is constrained to only cuttingly engage said sixth blade, thereby causing said tooling assembly to operatively and selectively cutting said material.