Patent ID: 8888565

Claim:
A sharpening tool for sharpening carbide wear rails, said sharpening tool comprising: a shaft dimensioned for attachment to a rotating power tool; and a substantially cylindrical head extending from said shaft, said head comprising: a top face; a bottom face, wherein said shaft extends from a center of said bottom face; a round body extending between said top face and said bottom face; and at least one rail groove extending around a circumference of said round body between said top face and said bottom face, wherein: said rail groove comprises at least one set of angled surfaces; and an abrasive material is disposed upon each of said at least one set of angled surfaces of said rail groove; wherein said at least one set of angled surfaces of said rail groove comprises an inner set of angled surfaces and an outer set of angled surfaces, wherein said inner set of angles surfaces form and included angle of between 60° and 80° and said outer set of angles surfaces form an included angle of substantially 120°.