Abstract: A machine for cutting a preselected shape in a work piece along X and Y axes, the machine utilizing a diamond wire cutting means traveling along a Z axis. A diamond wire cutting machine adapted for use with a milling machine. The cutting machine includes servo-driven caster-type pulleys movable about the Z axis and closely positioned above and below the work. Positioning of the rotatable pulleys is in accordance with the changes in configuration of the work being cut so that the diamond wire is directly supported against the pressure of the work as the work is turned in accordance with the pattern or shape to be cut.