Abstract: A method and apparatus for programming the motion of a machine tool in a three-dimensional machining space defined by an X, Y and Z coordinate system, the machine tool having a spindle linearly displaceable in three orthogonal X, Y and Z axes. A probe, mounted in the spindle and coupled to transducers, is moved by hand through a desired cutting path for an actual part. A computer connected to the transducers moves the machine in the direction that the probe is moved and/or rotates a workpiece mounted in the machining space and selectively records the position of the probe and workpiece to create an NC parts program that replicates the cutting path motions.