Abstract: A wide joint latex grout composition is disclosed comprising a thermoplastic film-forming resin latex and particulate mineral filler, the fillers comprising from about 74 to about 88 percent by weight of the grout composition and possessing a wide range of particle sizes, a major proportion of the grout comprising sand. Cracking in joints up to about one inch wide is avoided by the high sand loading, and dilatancy problems expected from such high sand loadings are obviated by closely controlling the particle size distribution of the sand and other inorganic fillers.

Abstract: A hole cutter for hard material such as ceramic tile. The cutter has a cylindrical body which has an axial opening and a pilot drill is mounted therein. The drill and the opening are non-circular, for example, hexagonal, in order to prevent relative rotation between the drill and the body. The body has a plurality of axially extending recesses in its periphery and an axially extending cutting blade which has an arcuate cross-section is positioned in each recess. The drill and the blades have carbide tips. The tips on the blades have beveled outer corners which prevent them from radially spreading when drilling and which minimize chipping the tile or its glaze. Mounting holes through the blades and in the recesses are spaced circumferentially away from their center lines to prevent improper mounting.