Abstract: A method for forming a negative image of a golf club grip design in a golf club grip mold cavity includes translating an initial golf club grip design to an electric discharge machine electrode, cutting the design into the electrode surface, and rotating and translating the electrode within the mold cavity while engaging in electric discharge machining. The translation from the initial golf club grip design to the electrode includes cordally scaling the design elements such that their cordal relationship is preserved when the design is subsequently formed into the grip mold cavity. In another aspect, a data storage medium stores a program for forming a golf club grip design for the surface of an electric discharge machine electrode.