Abstract: A method of producing a carbon bonded abrasive tool by chemical vapor deposition of carbon, such as pyrolytic carbon, diamond, or a polymorphous form of diamond through a preshaped tool, the preshaped tool containing a mixture of abrasive particles, and also the carbon bonded abrasive tool produced by the method. The mixture of abrasive particles may include a mixture of a superabrasive powder and an abrasive powder filler. All or a portion of the filler has been impact processing by subjecting the filler to an uniform super-pressure exceeding one gigapascal to break up the filler into random size particles, some at the original mesh size interspersed with a continuum of smaller particles.