Abstract Results are given in the fabrication of tools of tungsten carbide, and experiences are detailed of successful and unsuccessful attempts to apply them to various kinds of work. Readjustment of manufacturing practices must take place if there is to be a place in industry for tungsten carbide. The present high price may have its effect upon general adoption. The future of such alloys as factors in efficient manufacturing is asserted to be in the hands of the users of machine tools and not the makers of tool materials nor of the machine-tool builders. The rigidity and absence of vibration in the machine tool must continue, even as it grows appreciably older, to permit these materials to operate without chipping. An even stronger and tougher alloy may become necessary.