Abraders are formed from encapsulated abrasive particles which are uniformly distributed in a matrix. Superior abraders may be formed by metal bonding such encapsulated abrasives with a metal matrix which forms a continuous phase in which the abrasive particles may be positioned. Where the abrader is formed from a mixture of the bonding metal and a single type of abrasive particle, the specific gravity of the abrasive particle may be adjusted to match more closely that of the metal. The encapsulated abrasive particle may form the primary abrasive together with a secondary abrasive which is not as hard as the primary abrasive and which may or may not be encapsulated with a metal.
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