Method and system for removing material from a workpiece

An article, comprising:

• a platen comprising a body having a convex receiving surface configured for movement of a coated abrasive thereon;
• at least two openings intersecting the convex receiving surface and configured to allow for flow of an ejection material therethrough;
• and
• a coating disposed over the convex receiving surface of the platen, wherein the coating comprises a plurality of layers including a first layer overlying and in direct contact with the convex receiving surface and a second layer overlying and in direct contact with the first layer, wherein the first layer comprises a Shore A hardness of not greater than 100A;
• wherein the body comprises a thickness defined as distance between a bottom surface of the body and the convex receiving surface of the body as viewed from a lateral cross-sectional plane of the body, and wherein the body comprises a first uniform thickness extending from a first distal end of the body and a second uniform thickness extending from a second opposing distal end of the body, such that the thickness varies along a longitudinal cross-sectional plane of the body over which the coated abrasive moves.

A system, comprising:

• a translation assembly configured for translation of a coated abrasive;
• a platen comprising a body having a receiving surface configured for movement of the coated abrasive thereon;
• a plurality of openings intersecting the receiving surface and configured to allow for flow of an ejection material therethrough, wherein the receiving surface comprises a convex contour along a lateral cross-sectional plane of the body;
• and
• a coating disposed over and in direct contact with the receiving surface of the platen, and wherein the coating comprises a Shore A hardness of not greater than 100A;
• wherein the body comprises a thickness defined as a distance between a bottom surface of the body and the convex receiving surface of the body as viewed from a lateral cross-sectional plane of the body, and wherein the body comprises a first uniform thickness extending from a first distal end of the body and a second uniform thickness extending from a second opposing distal end of the body, such that the thickness varies along a longitudinal cross-sectional plane of the body over which the coated abrasive moves.