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A film of dimensionally stable plastic, to which are adhered carefully graded abrasive or polishing powders, i.e. , particles, having dimensions in the micrometer or submicrometer range. Note: Microfinishing films resemble sandpaper, but have much smaller abrasive or polishing particles. They are used commercially to shape and/or polish machined parts. They are also used to finish the endfaces of certain types of optical connectors. [After FAA]