Patent ID: 7955160

Claim:
A method comprising: providing a polishing tool comprising mounting plate, a chuck plate over and mechanically attached to said mounting plate, and a pad structure over and mechanically attached to said chuck plate, wherein said chuck plate comprises a first plurality of thru-holes, wherein said pad structure comprises a second plurality of thru-holes, and wherein each thru-hole of said second plurality of thru-holes is located over an associated thru-hole of said first plurality of thru-holes; mechanically attaching a retaining structure to said chuck plate; placing a glass mold comprising a plurality of cavities on said pad structure and within a perimeter formed by said retaining structure, wherein a bottom surface of said glass mold is in contact with said pad structure, and wherein said plurality of cavities are formed within a top surface of said glass mold; attaching a vacuum device to said chuck plate; activating said vacuum device such that a vacuum is formed within each said thru-hole of said second plurality of thru-holes and each said associated thru-hole of said first plurality of thru-holes, wherein said vacuum mechanically attaches said bottom surface of said glass mold to said pad structure; placing said polishing tool comprising said glass mold mechanically attached to said pad structure over a polishing pad such that said top surface of said glass mold is in contact with said polishing pad; applying a polishing substance to said polishing pad; first rotating at a first speed and in a first direction, said polishing tool comprising said glass mold mechanically attached to said pad structure; and polishing for a specified time period, said glass mold.