Patent ID: 7210986

Claim:
A method of forming a duplicate of an original key from a key blank, comprising the steps of: providing a key duplicating attachment including a base and a carriage movable linearly and angularly relative to the base; attaching, to the carriage, a rotary tool including an elongated dielectric housing and a high speed motor having a rotary shaft; coupling a cutting element to the rotary shaft of the high speed motor; clamping a key blank and an original key to the base in respectively fixed positions relative to one another; securing a stylus to the carriage such that when an engagement surface of the stylus contacts a reference surface of the original key, the cutting element contacts a corresponding target surface of the key blank; and while the rotary shaft of the high speed motor is rotating the cutting element, manipulating the dielectric housing so as to move the carriage relative to the base and to bring the stylus and abrasive cutting element into contact with the original key and key blank, respectively.