A stump grinder having a grinding member with a plurality of stacked plates. The stacked plates are joined by at least three bolts that extend the entire length of the plate stack and are secured by nuts at each end thereof. Adjacent plates are held apart from each other via spacers. Each spacer has a aperture through which one of the bolts passes. Each plate has three cutting elements secured thereon. The three cutting elements are spaced at approximately one hundred-twenty degrees apart from an adjacent cutting element. The three cutting blades are each mounted to have a different cutting path. To this end one of the blades is mounted on a first surface of the plate. The second blade is mounted on a second opposed surface of the plate and the third blade is mounted intermediate the first and second blades. The cutting paths may slightly overlap to ensure that now material is left uncut. The plates are mounted on a driven shaft.
