Patent ID: 7066792

Claim:
A system for removing material from a microfeature workpiece having a first face, a second face facing opposite from the first face, an edge surface between the first and second faces, and an edge at a juncture between the edge surface and one of the first and second faces, the system comprising: a carrier positioned to carry the microfeature workpiece with the first and second faces generally normal to an axis; a first polishing pad having: a first section with a first polishing surface having a first shape and a first support surface corresponding to the first polishing surface, wherein the first polishing surface forms an acute angle relative to the axis and the first support surface; and a second section having a second polishing surface and a second support surface corresponding to the second polishing surface, and wherein the first and second support surfaces are generally co-planar; and a polishing pad support positioned to carry the first polishing pad proximate to the carrier with the polishing surface facing toward the carrier, the polishing pad support being configured to carry a second polishing pad in lieu of the first polishing pad, the second polishing pad having a polishing surface with a second shape different than the first shape, the second shape being configured to remove material from the first face of the microfeature workpiece while the microfeature workpiece rotates about the axis.