A method of producing aggregated abrasive grains for cutting tools and the like, comprising sintering a mixture of abrasive material powders and metal or alloy powders together with 5 to 10% by weight of the metal powders of an adhesion-active agent, to obtain a cake which is subsequently crushed. The...http://www.google.com.au/patents/US4024675?utm_source=gb-gplus-sharePatent US4024675 - Method of producing aggregated abrasive grains