Abstract: A guard apparatus for a rotational tool prevents direct contact of the cutting regions by an operator of the tool. The rotational cutting tool to which this invention is particularly applicable is the type having at least a shank portion and a toothed region, with the shank portion attachable to a holding attachment device to hold the tool, particularly during operation. The guard apparatus comprises a compressible guard housing for defining a guard circumferential area following a circular path parallel to but greater than a cutting circumferential area defined by the toothed region of the rotational cutting tool; and a first securement device having a first periphery at a first end for abutting the holding attachment device and a flared and tapered periphery at a second end for associating with the compressible guard housing.