What Does a CNC Machinist Do?
A CNC machinist operates computer numerical control (CNC) machines to manufacture precise components and tools used in various industries such as aerospace, automotive, and manufacturing. They read technical drawings, set up machinery, monitor production runs, and inspect finished parts to ensure they meet exact specifications.
This hands-on role combines computer programming with mechanical skills. CNC machinists are essential for transforming raw materials into highly accurate, high-quality parts. They must follow safety procedures, maintain equipment, and work closely with engineers and quality inspectors to support production goals.
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CNC Machinist Core Responsibilities
- Set up and operate CNC lathes, mills, or grinders according to work orders and blueprints
- Read and interpret technical drawings, schematics, and G-code programs
- Select appropriate tools, fixtures, and materials for each job
- Monitor machine operations and make real-time adjustments as needed
- Measure and inspect finished parts using calipers, micrometers, and gauges
- Perform routine maintenance and troubleshoot equipment issues
- Maintain clean and organized workspaces in compliance with safety standards
- Document production data and report nonconformities
Required Skills and Qualifications
Hard skills
- Experience with CNC machine operation and G-code programming
- Ability to read blueprints and use precision measurement tools
- Familiarity with materials like steel, aluminum, or composites
- Machine setup and tooling adjustments
- Basic math and geometry for part dimensions
Soft skills
- Strong attention to detail and accuracy
- Manual dexterity and steady hand-eye coordination
- Ability to follow procedures and work independently
- Problem-solving and mechanical aptitude
- Team communication and safety awareness
Educational requirements
- High school diploma or GED required
- Technical training in machining, manufacturing, or a related field preferred
Certifications
Not required, but certifications from NIMS (National Institute for Metalworking Skills) or similar programs are often preferred.
Preferred Qualifications
- 3+ years of experience in a CNC machining environment
- Familiarity with CAD/CAM software (e.g., Mastercam, Fusion 360)
- Experience working in ISO-certified or lean manufacturing environments
- Cross-training in manual machining or fabrication
National Average Salary
CNC machinist salaries vary by experience, industry, organization size, and geography. Click below to explore salaries by local market.
The average national salary for a CNC Machinist is:
$49,955
Sample Job Description Templates for CNC Machinists
Entry-Level CNC Machinist
Position Overview
An entry-level CNC machinist assists with machine setup, operation, and inspection of precision parts. Working under close supervision, they support production runs and learn to maintain equipment, follow technical drawings, and meet safety standards.
Responsibilities
- Assist in setting up CNC machines based on production specifications
- Load materials and monitor machine operations during production
- Use calipers and micrometers to inspect part dimensions
- Clean parts, organize tools, and maintain work area
- Learn to read blueprints and make basic tooling adjustments
- Follow safety protocols and quality control procedures
Requirements
Hard skills
- Basic understanding of CNC machinery
- Familiarity with calipers, gauges, and hand tools
- Willingness to learn blueprint reading and G-code basics
- Basic math and measurement skills
Soft skills
- Good hand-eye coordination and attention to detail
- Reliability and punctuality
- Openness to coaching and instruction
- Safety awareness in a production environment
Education
- High school diploma or GED required
- Technical training or machining coursework preferred
Senior CNC Machinist
Position Overview
A senior CNC machinist leads high-precision machining tasks, complex setups, and quality control for advanced components. They troubleshoot equipment, interpret detailed blueprints, and ensure compliance with tight tolerances and safety regulations.
Responsibilities
- Perform advanced machine setups, offsets, and program edits
- Inspect complex parts using precision instruments and CMMs
- Identify and resolve tooling or programming issues
- Train and assist junior machinists on equipment and safety
- Work from engineering drawings and ensure part compliance
- Support maintenance and process improvements
Requirements
Hard skills
- Proficiency in G-code and CNC machine programming
- Expertise with lathes, mills, or multi-axis machines
- Advanced part inspection and measurement techniques
- Knowledge of lean manufacturing and quality systems
Soft skills
- Leadership and technical mentoring
- Strong troubleshooting and mechanical reasoning
- Effective communication with engineers and operators
- Decision-making under pressure
Education
- High school diploma required; trade certificate or associate degree preferred
Certifications
- NIMS certification or equivalent preferred
Lead CNC Machinist
Position Overview
A lead CNC machinist oversees shop floor operations, coordinates workflows, and ensures machining standards are met. They guide machinist teams, optimize productivity, and act as the go-to resource for setup, tooling, and quality control.
Responsibilities
- Supervise daily activities and prioritize job orders for CNC team
- Lead setups for complex or prototype parts
- Perform final inspections and resolve quality issues
- Train machinists and enforce safety procedures
- Collaborate with engineers on process improvements and tooling solutions
- Maintain shop floor documentation and production records
Requirements
Hard skills
- Mastery of setup, programming, and inspection
- Shop management and workflow optimization
- CAD/CAM familiarity and toolpath verification
- Compliance with ISO and QA documentation
Soft skills
- Leadership and team coaching
- Strong time and resource management
- Clear communicator and problem solver
- Commitment to safety and continuous improvement
Education
- Trade school or associate degree preferred
Certifications
- Advanced NIMS credentials or equivalent recommended
CNC Lathe Machinist
Position Overview
A CNC lathe machinist specializes in producing round and cylindrical parts using computer-controlled turning equipment. They manage part setups, inspect components, and maintain tight tolerances throughout production runs.
Responsibilities
- Set up and operate CNC lathes based on work instructions
- Inspect turned parts using micrometers, bore gauges, and indicators
- Load materials, change tools, and adjust feeds/speeds
- Edit programs and ensure surface finishes meet specifications
- Perform routine maintenance on lathe equipment
- Document measurements and flag nonconforming parts
Requirements
Hard skills
- CNC lathe programming and operation experience
- Knowledge of turning tools and insert types
- Blueprint and GD&T interpretation
- Manual deburring and part handling
Soft skills
- Visual accuracy and manual dexterity
- Dependability and accountability
- Ability to maintain production output with minimal supervision
- Communication with quality and engineering teams
Education
- High school diploma or equivalent required
- Vocational or technical training preferred
CNC Mill Machinist
Position Overview
A CNC mill machinist operates vertical or horizontal milling machines to create precision components from raw materials. They follow engineering drawings, adjust machine settings, and inspect parts throughout the milling process.
Responsibilities
- Set up and run CNC milling machines to produce high-precision parts
- Read and interpret technical drawings and setup sheets
- Perform tool changes, fixture alignments, and offset adjustments
- Inspect milled parts with calipers, micrometers, and height gauges
- Deburr parts and maintain a clean, safe workstation
- Make program edits and recommend process improvements
Requirements
Hard skills
- Milling machine operation and setup
- Familiarity with cutting speeds, feed rates, and material behavior
- Understanding of multi-axis machining and workholding
- Quality control and documentation
Soft skills
- Strong spatial reasoning and problem-solving
- Attention to measurement and finish accuracy
- Collaboration with machinists and engineering staff
- Organized and process-focused
Education
- High school diploma or GED required
- Technical certification in CNC or precision machining preferred