A hole saw blade comprises a substantially cylindrical body with a pair of sides extending substantially concentric to each other. The sides have an inner surface and an outer surface. A cutting edge extends from an end of the body. A plurality of teeth defines the cutting edge. The teeth are arranged in an alternating pattern in which a first tooth extends inwardly of a cylinder containing the inner surface a first inner distance. A second tooth is adjacent to the first tooth extends outwardly of a cylinder containing the outer surface a second outer distance. A third tooth is located adjacent the second tooth on an opposite side of the first tooth and that extends inwardly of the cylinder containing the inner surface a third inner distance greater than the first inner distance.

A system for setting and sharpening teeth of a saw blade includes a frame, a sharpening assembly and a setting assembly. A block affixed to the frame defines at least in part a blade path. The sharpening assembly is configured to sharpen a first tooth of the saw blade in a first position of the blade path. The setting assembly configured to set the first tooth of the saw blade in a second position of the blade path, wherein the blade path is defined through the sharpening assembly and the setting assembly. An advancement assembly is configured to move the saw blade along the blade path in an advancement direction to advance teeth of the saw blade into and out of the first position, and into and out of the second position.

A hole saw blade comprises a substantially cylindrical body with a pair of sides extending substantially concentric to each other. The sides have an inner surface and an outer surface. A cutting edge extends from an end of the body. A plurality of teeth defines the cutting edge. The teeth are arranged in an alternating pattern in which a first tooth extends inwardly of a cylinder containing the inner surface a first inner distance. A second tooth is adjacent to the first tooth extends outwardly of a cylinder containing the outer surface a second outer distance. A third tooth is located adjacent the second tooth on an opposite side of the first tooth and that extends inwardly of the cylinder containing the inner surface a third inner distance greater than the first inner distance.

A system for setting and sharpening teeth of a saw blade includes a frame, a sharpening assembly and a setting assembly. A block affixed to the frame defines at least in part a blade path. The sharpening assembly is configured to sharpen a first tooth of the saw blade in a first position of the blade path. The setting assembly configured to set the first tooth of the saw blade in a second position of the blade path, wherein the blade path is defined through the sharpening assembly and the setting assembly. An advancement assembly is configured to move the saw blade along the blade path in an advancement direction to advance teeth of the saw blade into and out of the first position, and into and out of the second position.

A method and apparatus for removing a section from a tire is disclosed. The method and apparatus are configured so that one side of a saw blade used to cut a section from a tire is treated by dulling. The treatment allows for the removal of a section of a tire so cords embedded in various layers of the tire are protected from damage and the surface texture surrounding the removed section of the tire is adequate for repair.