Emery-wheel
A disk of corundum, or emery composition, keyed to a mandrel and rotated by a pulley and belt; used principally for grinding and polishing metals. See CORUNDUM; EMERY.
Twelve hundred entries from the golden age of cast metal — how bells are founded, why brass is not bronze, what a cupola melts and a core withstands — by Simpson Bolland, the trade's great teacher.
A disk of corundum, or emery composition, keyed to a mandrel and rotated by a pulley and belt; used principally for grinding and polishing metals. See CORUNDUM; EMERY.