Abstract: The present invention relates to a method of dressing a complex contour onto a grinding surface of at least one grinding wheel of a two-axis grinding machine for grinding a workpiece. The method comprises the steps of causing at least one dressing diamond to traverse the grinding surface of said grinding wheel along a first axis parallel to the axis of rotation of the workpiece while simultaneously causing movement of the dressing diamond with respect to said grinding surface along a second axis; and employing a programmable controller to control said traversing and said movement, so as to automatically dress a complex contour onto said grinding surface.