The present inventions is directed to a method of polishing a workpiece. The method comprises providing an abrasive article, the abrasive article comprising superabrasive particles within agglomerates. The method then comprises contacting the abrasive article with a workpiece outer surface, the workpiece outer surface comprising a thermal spray hard phase, and relatively moving the abrasive article and the workpiece. The workpiece outer surface may further comprises a bonding phase. The abrasive article may be a continuous belt, an abrasive tape or a resin bonded disk.