51-4194.00 - Tool Grinders, Filers, and Sharpeners. Perform precision smoothing, sharpening, polishing, or grinding of metal objects. Sample of reported job titles: Cutter Grinder, Finisher, Grinder, Grinder Operator, OD Grinder Operator (Outer Diameter Grinder Operator), Saw Filer, Tool and Cutter Grinder, Tool Grinder.