There is provided a guide dresser for milling a saw guide, the guide dresser comprising first and second cutter assemblies that are slidably mounted on a rail or slide system so as to be adjustable, in operation, between an open position and a closed position. There is also provided cutter heads and methods for milling a saw guide.

A method involves processing multiple workpieces, each composed of a material with a machinable surface characterized by distinct compressive and tensile regions. In at least one workpiece, the compressive region exhibits greater strength than the tensile region, while in at least one other workpiece, the tensile region is stronger than the compressive region. The method includes selecting a workpiece from this group, ensuring that the chosen workpiece is made of a material different from at least one of the other workpieces. A set of opto-mechanical tools is prepared, and from this set, a tool is selected based on its rake angle, specifically choosing a tool with a midrange rake angle between approximately 136 and 165. This selected tool is used to machine the chosen workpiece.