# Tool Grinders, Filers, and Sharpeners > Perform precision smoothing, sharpening, polishing, or grinding of metal objects. - Code: 51-4194.00 (O*NET-SOC; SOC 2018 51-4194) - Family: [Production](https://foundation.org.ai/occupations#family-51), one of its 114 occupations - Tasks: 18 tasks (12 core and 6 supplemental) - Page: https://foundation.org.ai/occupations/51-4194.00 - JSON: https://foundation.org.ai/data/tasks/51-4194.00.json ## What the work is made of 1. Monitor machine operations to determine whether adjustments are necessary, stopping machines when problems occur. Core task · Task 10349 · Rated by 70 people who do the job, July 2016 2. Inspect, feel, and measure workpieces to ensure that surfaces and dimensions meet specifications. Core task · Task 10350 · Rated by 71 people who do the job, July 2016 3. Study blueprints or layouts of metal workpieces to determine grinding procedures, and to plan machine setups and operational sequences. Core task · Task 10358 · Rated by 70 people who do the job, July 2016 4. Select and mount grinding wheels on machines, according to specifications, using hand tools and applying knowledge of abrasives and grinding procedures. Core task · Task 10354 · Rated by 71 people who do the job, July 2016 5. Compute numbers, widths, and angles of cutting tools, micrometers, scales, and gauges, and adjust tools to produce specified cuts. Core task · Task 10357 · Rated by 70 people who do the job, July 2016 6. Turn valves to direct flow of coolant against cutting wheels and workpieces during grinding. Core task · Task 10359 · Rated by 70 people who do the job, July 2016 7. Set up and operate grinding or polishing machines to grind metal workpieces, such as dies, parts, and tools. Core task · Task 10351 · Rated by 70 people who do the job, July 2016 8. Dress grinding wheels, according to specifications. Core task · Task 10348 · Rated by 70 people who do the job, July 2016 9. File or finish surfaces of workpieces, using prescribed hand tools. Core task · Task 10353 · Rated by 71 people who do the job, July 2016 10. Perform basic maintenance, such as cleaning and lubricating machine parts. Core task · Task 10355 · Rated by 71 people who do the job, July 2016 11. Remove finished workpieces from machines and place them in boxes or on racks, setting aside pieces that are defective. Core task · Task 10352 · Rated by 70 people who do the job, July 2016 12. Remove and replace worn or broken machine parts, using hand tools. Core task · Task 10356 · Rated by 70 people who do the job, July 2016 13. Fit parts together in pre-assembly to ensure that dimensions are accurate. Supplemental task · Task 20926 · Rated by 70 people who do the job, July 2016 14. Attach workpieces to grinding machines and form specified sections and repair cracks, using welding or brazing equipment. Supplemental task · Task 10364 · Rated by 70 people who do the job, July 2016 15. Duplicate workpiece contours, using tracer attachments. Supplemental task · Task 10362 · Rated by 69 people who do the job, July 2016 16. Inspect dies to detect defects, assess wear, and verify specifications, using micrometers, steel gauge pins, and loupes. Supplemental task · Task 10361 · Rated by 71 people who do the job, July 2016 17. Place workpieces in electroplating solutions or apply pigments to surfaces of workpieces to highlight ridges and grooves. Supplemental task · Task 10365 · Rated by 70 people who do the job, July 2016 18. Straighten workpieces and remove dents, using straightening presses and hammers. 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