A wood crusher has body frame; a crushing apparatus installed on the body frame and a crushing rotor rotated in a crushing chamber. The display uses an automatic current limit driving method. A longitudinal key is disposed in the body channel with one end of the key configured to engage the keyway of the nut. The rack is preferably injection molded of plastic and can be placed in various locations within a refrigerator compartment, such as on a shelf or in a drawer. Operational data associated with the new cutter head is obtained.