Patent ID: 8721393

Claim:
A method of sharpening a rotary cutting blade for a hand held rotary cutter, the method comprising: placing a first planar side of the rotary cutting blade for a hand held rotary cutter over an upper face of a lower rotary column disposed in a lower body portion of a case of a power sharpener system; bringing a bottom face of an upper rotary column disposed in an upper cap portion of the case into contact with a second planar side of the rotary cutting blade, such that the upper rotary column and the lower rotary column are aligned along a common rotary axis and the rotary cutting blade is secured between the bottom face of the upper rotary column and the upper face of the lower rotary column, wherein a first cutting edge of the rotary cutting blade on the first planar side of the rotary blade is in contact with an upper sharpening stone positioned at an appropriate angle to sharpen the first cutting edge, and a second cutting edge of the rotary cutting blade on the second planar side of the rotary blade is in contact with a lower sharpening stone positioned at an appropriate angle to sharpen the second cutting edge, and actuating a motor to rotate the upper and lower rotary columns thereby sharpening the first cutting edge and the second cutting edge of the rotary cutting blade against the upper sharpening stone and the lower sharpening stone.