The median annual wage for Grinding, Lapping, Polishing, and Buffing Machine Tool Setters, Operators, and Tenders, Metal and Plastic in Riverside-San Bernardino-Ontario, CA is $42,680 (May 2024 BLS OES). The mean (average) is $45,700.
Pay spans roughly $35,880 at the 10th percentile to $61,860 at the 90th, so experience and specialisation move this figure a lot. At the median that is about $20.52 per hour. An estimated 820 people work as grinding, lapping, polishing, and buffing machine tool setters, operators, and tenders, metal and plastic in Riverside-San Bernardino-Ontario, CA.
| Median (annual) | $42,680 |
| Mean (annual) | $45,700 |
| Median (hourly) | $20.52 |
| 10th percentile | $35,880 |
| 90th percentile | $61,860 |
| Employment | 820 |
Updated 2026-07-23.
Source: BLS OES May 2024 — bls.gov/oes. Checked 2026-07-23.