The document discusses various non-traditional machining processes including chemical machining, electrochemical machining, electrical discharge machining, laser beam machining, electron beam machining, water jet machining, abrasive jet machining, and ultrasonic machining. These processes are used for hard materials, complex shapes, or where heat and stresses from traditional machining would cause damage. Each process removes material in unique ways such as through chemical dissolution, electrochemical erosion, electrical sparks, focused light/electron beams, or abrasive particle impact.