Milling machine operator
Also known as: numerical controlled lathe operator, CNC milling operative, cnc programmer/operator, numerical controlled milling operator, numerical controlled milling machine technician, numerical control milling operative
About this occupation
Milling machine operators set up, program and control milling machines, designed to cut excess material from metal workpieces using a computer-controlled rotary-cutting, milling cutter. They read milling machine blueprints and tooling instructions, perform regular machine maintenance, and make adjustments to the milling controls, such as the depth of cuts or the rotation speed.
A specialisation of computer numerical control machine operator.
Essential skills and knowledge
- perform machine maintenance
- interpret geometric dimensions and tolerances
- consult technical resources
- dispose of cutting waste material
- operate precision measuring equipment
- use CAM software
- manufacturing processes
- monitor automated machines
- perform test run
- troubleshoot
- types of metal
- use automatic programming
Typical tasks and preparation
From the related US occupation profile Milling and Planing Machine Setters, Operators, and Tenders, Metal and Plastic (O*NET 51-4035.00). Linked by an official crosswalk: related, not identical; details vary by country.
- Remove workpieces from machines, and check to ensure that they conform to specifications, using measuring instruments such as microscopes, gauges, calipers, and micrometers.
- Verify alignment of workpieces on machines, using measuring instruments such as rules, gauges, or calipers.
- Move controls to set cutting specifications, to position cutting tools and workpieces in relation to each other, and to start machines.
- Observe milling or planing machine operation, and adjust controls to ensure conformance with specified tolerances.
- Select and install cutting tools and other accessories according to specifications, using hand tools or power tools.
- Position and secure workpieces on machines, using holding devices, measuring instruments, hand tools, and hoists.
- Typical education (US)
- High School Diploma or the equivalent (such as a GED)
- Preparation
- Job Zone 2 of 5
- Interests
- Realistic, Conventional, Investigative
Top skills: Operations Monitoring, Operation and Control, Critical Thinking, Monitoring, Active Listening, Reading Comprehension
US median pay: US$52,800 a year (2025), 12,460 employed. Source: U.S. Bureau of Labor Statistics, Occupational Employment and Wage Statistics.
Subjects this work relies on
How important each subject's knowledge is in the job itself, rated by people doing it (1 to 5).
- MetalworkO*NET: MechanicalVery important (3.7)
- Mathematics or StatisticsO*NET: MathematicsImportant (3.5)
- English or Literature in EnglishO*NET: English LanguageImportant (3.5)
- Computer StudiesO*NET: Computers and ElectronicsImportant (3.2)
O*NET data describe work in the United States; requirements differ by country. This page includes information from the O*NET 31.0 Database by the U.S. Department of Labor, Employment and Training Administration (USDOL/ETA). Used under the CC BY 4.0 license. O*NET is a trademark of USDOL/ETA. CareerProof Global has modified all or some of this information; USDOL/ETA has not approved, endorsed, or tested these modifications.
Preparation needed
Job Zone 1-2: Very Little to Some Preparation Needed
- Most common education (US)
- High School Diploma or the equivalent (such as a GED)
- Education
- Usually requires a high school diploma or GED, though some occupations may not.
- Experience
- Some occupations may need little or no previous experience; others require several months to a year of experience. For example, landscaping and groundskeeping workers might require very little training or previous experience, while agricultural equipment operators can benefit from on-the job training.
- Training
- Ranges from a few days to one year of on-the-job training.
O*NET data describe work in the United States; requirements differ by country. This page includes information from the O*NET 31.0 Database by the U.S. Department of Labor, Employment and Training Administration (USDOL/ETA). Used under the CC BY 4.0 license. O*NET is a trademark of USDOL/ETA. CareerProof Global has modified all or some of this information; USDOL/ETA has not approved, endorsed, or tested these modifications.
Related occupations
Occupations O*NET links to this one by similar work, skills and knowledge.
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- Rolling Machine Setters, Operators, and Tenders, Metal and Plastic
O*NET data describe work in the United States; requirements differ by country. This page includes information from the O*NET 31.0 Database by the U.S. Department of Labor, Employment and Training Administration (USDOL/ETA). Used under the CC BY 4.0 license. O*NET is a trademark of USDOL/ETA. CareerProof Global has modified all or some of this information; USDOL/ETA has not approved, endorsed, or tested these modifications.