Patent ID: 8360818
Filing Date: 2013-01-29
Classification: B24B

Abstract:
1. A process for polishing a workpiece, comprising the steps of: suspending a first weight by a jig shaft above a polishing platen by a weight support, the first weight including the weight of the jig shaft and the weight of the workpiece; controllably lowering the workpiece and jig shaft toward an upper surface of the polishing platen until the workpiece contacts the platen; incrementally removing a weight support of the jig shaft and workpiece such that incrementally more of the first weight is borne by the platen; repeatedly sensing an amount of the first weight which is presently being supported by the weight support; and halting the incremental removal of the weight support once said amount of supported weight approximates a predetermined stored value, such that a known amount of pressure is applied between the workpiece and the platen.