Guide dresser, cutter heads and methods of use thereof

A guide dresser for milling a saw guide, the guide dresser comprising:

• a rail or slide system;
• a first cutter assembly slidably mounted on the rail or slide system, the first cutter assembly having a first rotatable cutter head;
• a second cutter assembly slidably mounted on the rail or slide system, the second cutter assembly having a second rotatable cutter head;
• a guide mount for receiving and maintaining in a stationary position the saw guide, the stationary position being between the first rotatable cutter head and the second rotatable cutter head, and the rail or slide system being aligned for moving each of the first cutter assembly and second cutter assembly towards and away from the guide mount;
• and
• one or more laser range finders each positioned and aligned to take a respective measurement of the saw guide when the saw guide is positioned in the guide mount,
• the guide dresser being automatically adjustable between an open position and a closed position by slidable movement of the first cutter assembly, the second cutter assembly, or both, wherein:
• when in the open position, both the first cutter assembly and the second cutter assembly are positioned away from the guide mount and on the rail or slide system, and
• when in the closed position, both the first cutter assembly and the second cutter assembly are positioned proximal to the guide mount and on the rail or slide system, such that both the first cutter head and second cutter head are capable of contacting the saw guide when the saw guide is received within the guide mount,
• wherein the slidable movement between the open position and the closed position is in whole or in part an automatic operation based on results of the measurement or measurements of the one or more laser range finders.