an abrasive wheel comprised of abrasive granules dispersed throughout and adhered in a matrix with a binder system which comprises a blend of a tough adherent binder and a smear - reducing quantity of a smear - reducing compatible polymer . an abrasive wheel having abrasive granules adhered by the binder without the compatible polymer has a tendency to smear onto the surface of a workpiece when rotated thereagainst under heat - generating conditions such as high wheel to workpiece pressure and surface speed .