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NOC Code: NOC Code: 7231 Occupation: Machinists and machining and tooling inspectors
Occupation Description: Occupation Description:
Machinists set up and operate a variety of machine tools to cut or grind metal, plastic or other materials to make or modify parts or products with precise dimensions. Machining and tooling inspectors inspect machined parts and tooling in order to maintain quality control standards. They are employed by machinery, equipment, motor vehicle, automotive parts, aircraft and other metal products manufacturing companies and by machine shops. Machinists set up and operate a variety of machine tools to cut or grind metal, plastic or other materials to make or modify parts or products with precise dimensions. Machining and tooling inspectors inspect machined parts and tooling in order to maintain quality control standards. They are employed by machinery, equipment, motor vehicle, automotive parts, aircraft and other metal products manufacturing companies and by machine shops.

  • Click on any of the Essential Skills to view sample workplace tasks for this occupation.
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Table will display the Skill Level for the Noc specified
Essential Skills Essential Skills Levels
Reading Reading 1 2 3 4
Writing Writing 1 2 3
Document Use Document Use 1 2 3 4
Digital Technology Digital Technology 1 2 3
Oral Communication Oral Communication 1 2 3
Scheduling or Budgeting and Accounting Scheduling or Budgeting and Accounting 1 2
Measurement and Calculation Measurement and Calculation 1 2 3 4
Data Analysis Data Analysis 1 2 3
Numerical Estimation Numerical Estimation 1 2
Job Task Planning and Organizing Job Task Planning and Organizing 1 2
Decision Making Decision Making 1 2 3
Problem Solving Problem Solving 1 2 3
Finding Information Finding Information 1 2
Critical Thinking Critical Thinking 1 2 3


  • The skill levels represented in the above chart illustrate the full range of sample tasks performed by experienced workers and not individuals preparing for or entering this occupation for the first time.
  • Note that some occupational profiles do not include all Numeracy and Thinking Essential Skills.

If you would like to print a copy of the chart and sample tasks, click on the "Print Occupational Profile" button at the top of the page.


Reading
  • Read information on labels and drawings, e.g. read safety precautions on labels affixed to milling, boring and grinding equipment to learn about shock and crush hazards. (1)
  • Read short notes on technical drawings, e.g. read notes on blueprints to learn about changes to specifications. (1)
  • Read short notes in logbooks and forms, e.g. read shift notes and logbook entries about the status of various jobs, special machining instructions and changes to customer orders. (1)
  • Read a variety of instructions and procedures, e.g. read step-by-step instructions on work orders to learn the steps required to produce machine parts. (2)
  • Read memos and bulletins, e.g. read memos about staffing changes and bulletins that provide details of new contracts, equipment or technologies. (2)
  • Read workplace safety materials, e.g. read Material Safety Data Sheets to understand the chemical composition of solvents and their possible hazards. (2)
  • Read a variety of trade magazines, e.g. read articles in magazines, such as Canadian Manufacturing, to learn about new equipment, technologies, industry trends and changes in manufacturing processes. (3)
  • Read a variety of manuals to learn how to carry out work, e.g. read manuals to learn how to program and operate computer numerically controlled (CNC) equipment. (3)
  • Read Acts and regulations, e.g. read occupation health and safety Acts and Workplace Hazardous Materials Information System (WHMIS) regulations to learn the safety procedures to follow. (4)
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Writing
  • Write reminders and short notes, e.g. write brief notes to record equipment setup procedures and to inform other machinists about the status of projects. (1)
  • Write comments in forms, e.g. write comments in defect and non-conformity report forms to describe defects and corrective actions taken. (2)
  • Write brief email messages to request equipment repairs, tool replacement and missing project specifications. (2)
  • Write short reports, e.g. write damaged tooling reports to record the events leading up to equipment malfunctions and the actions you took afterward. (3)
  • Write lengthy work procedures, e.g. write detailed sequenced instructions to describe the tools, techniques and materials needed for complex machining processes. (3)
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Document Use
  • Observe symbols and icons, e.g. view hazard symbols to learn about the toxic properties of solvents. (1)
  • Locate data on tags, e.g. view tags attached to parts to identify customer information and job numbers. (1)
  • Locate the grade of metals and their alloys using colour code charts. (2)
  • Complete a variety of forms, e.g. enter data, such as dates, times, quantities and identification numbers, in job cards, work orders and defect reports. (2)
  • Locate data in schedules, e.g. study schedules to learn about work assignments and which equipment you are to operate. (2)
  • Locate data in graphs, e.g. view graphed production statistics to determine the number of items that were produced outside acceptable tolerances. (2)
  • Locate data in forms, e.g. locate data, such as times, costs, quantities and completion dates, in work orders. (2)
  • Locate data in a variety of complex tables, e.g. scan specification tables to determine material requirements and information, such as speeds, feed rates, metal classifications, identification numbers and material coefficients. (3)
  • View complex three-dimensional representations of parts and machining processes on display panels of computer numerically controlled (CNC) machinery to determine project specifications and processes. (4)
  • Locate data in a variety of technical drawings, e.g. study complex assembly and sectional view diagrams to locate critical dimensions, angles, bore locations and machining tolerances. (4)
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Digital Technology
  • Use electronic measuring devices, such as digital micrometers and laser measuring machines, to take precise measurements of length, diameter, pitch diameter, parallelism and taper. (1)
  • Use calculators and personal digital assistant (PDA) devices to complete numeracy-related tasks, such as calculating material requirements. (1)
  • Use communications software to exchange email messages with supervisors, customers and suppliers. (2)
  • Use the Internet to access online tooling catalogues and other supplier information. (2)
  • Use databases to access drawings, instructions, internal process documents and work orders. (2)
  • Use the Internet to access training courses and seminars offered by suppliers, employers and trade schools. (2)
  • Use the Internet to access blogs and web forums to seek and offer troubleshooting and other technical advice. (2)
  • Use Internet browsers and search engines to locate information, such as equipment and supply specifications. (2)
  • Use computer-assisted design (CAD) software to produce basic drawings of parts and fixtures. (2)
  • Input data into computer numerically controlled (CNC) equipment, such as lathes and cutting machines, to set operating parameters, such as quantities, times, speeds and depths. (2)
  • Use advanced features of manufacturing and machining software to create three-dimensional models and run test programs to ensure programs will meet work specifications. (3)
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Oral Communication
  • Exchange information with co-workers, e.g. provide co-workers with updates about work performed during shift changeovers. (1)
  • Discuss features and compare specifications of new tooling products with suppliers. (2)
  • Talk to customers, e.g. talk to customers to clarify specifications and discuss project outcomes. (2)
  • Discuss work plans and coordinate tasks, e.g. discuss schedules, workloads and the use of tools with other machinists to ensure a large job is finished on schedule. (2)
  • Clarify work instructions, e.g. speak with supervisors when scale drawings and work orders are unclear or incomplete. (2)
  • Explain the use of equipment, such as computer numerically controlled (CNC) drill presses and lathes, to apprentices and new employees. (3)
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Scheduling or Budgeting and Accounting
  • Adjust daily work schedules to accommodate rush jobs and jobs that take longer than estimated. (2)
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Measurement and Calculation
  • Take measurements of length, height and weight using basic hand tools, e.g. measure the length of bars using tape measures. (1)
  • Calculate production and material requirements, e.g. calculate the amount of material to be removed and the number of machine passes required to machine products within tolerance. (2)
  • Take precise measurements, e.g. use precision instruments, such as callipers, micrometers and protractors, to take measurements of length, diameter, pitch diameter and parallelism, and taper to 1/10,000 of an inch. (3)
  • Calculate finished product dimensions, e.g. use starting measurements and formulae to calculate missing dimensions, such as lengths, cuts, circumferences and angles. (3)
  • Calculate starting positions, feed rates and speed settings for machines, e.g. use the dimensions of parts to be machined and tool sizes to determine appropriate equipment starting positions and settings. (4)
  • Use formulae, e.g. calculate the angle and position of subsequent holes by entering data, such as radii and the starting angles of the first holes to be drilled, into formulae. (4)
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Data Analysis
  • Monitor speed settings and feed rates for drills, lathes and mills to ensure they operate within acceptable ranges. (1)
  • Compare measurements of machined parts to specifications to determine if they are within specified tolerances. (1)
  • Calculate summary measures, e.g. calculate the average number of product defects per shift. (2)
  • Analyze production data, e.g. compare finished product dimensions of parts taken at regular intervals over the course of a machining cycle to identify when tools need to be replaced. (3)
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Numerical Estimation
  • Estimate the duration of machining jobs by considering factors, such as the size and complexity of parts to be produced and the type of machining processes used. (2)
  • Estimate the amount of material required to carry out machining jobs by considering the number of parts to be produced, the material and the machining processes used. (2)
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Job Task Planning and Organizing
  • Machinists determine the task sequence of their work and may establish their own work schedules. The workload of machinists who perform repairs or who work in smaller shops may fluctuate more than the workload of those employed by larger shops producing new parts. Machinists' daily routines vary with the type and size of parts machined, with more complex jobs sometimes extending over several days. Machinists' routines are interrupted by equipment failures, rush jobs and other scheduling problems. (2)
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Decision Making
  • Decide when to recalibrate tools and perform routine maintenance on equipment. Consider how long tools and equipment have been in use and the required tolerances of parts being produced. (1)
  • Decide when parts must be scrapped. Consider whether the parts' measurements meet tolerances specified on engineering drawings and work instructions. (1)
  • Choose machining methods and materials for projects. Consider project specifications and the availability of equipment and materials. (2)
  • Select the sequence of project tasks. Consider timelines, the availability of equipment and specifications, such as the size and quantity of parts to be produced, materials and tolerances. (3)
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Problem Solving
  • Encounter defective materials. Adjust the machining process to accommodate minor defects. Scrap work pieces that are unsalvageable. (1)
  • Encounter delays due to equipment breakdowns and material shortages. Inform supervisors of the issue, assist with repairs if possible and perform other work until repairs are completed and needed materials arrive. (2)
  • Discover that finished products do not meet specifications. Salvage whatever materials you can, adjust equipment settings and re-do the order. (2)
  • Encounter drawings that are vague or missing key information. Make your own calculations to fill in missing numbers and rely on your experience and knowledge to determine suitable ways to carry out the machining. (3)
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Finding Information
  • Consult with customers and co-workers to gather information missing from drawings. (2)
  • Use manuals to look up formulae, tolerances and other key information when interpreting job specifications. (2)
  • Learn about new products by reading magazines, brochures and information on websites and speaking with suppliers and co-workers. (2)
  • Refer to work orders to find out specifics of a job, such as materials required or shipping date. Check scale drawings to find critical dimensions and tolerances. (2)
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Critical Thinking
  • Judge the suitability of tools and equipment for machining jobs. Consider the work process, materials and your own experience with different tools and equipment to determine whether the tools suit the purpose. (2)
  • Assess the quality of cuts and grinding throughout the machining process. Consider whether measurements taken at each stage meet tolerances set out in scale drawings. (2)
  • Assess the safety of projects and work sites. Consider the condition of tools, equipment and protective devices, such as safety barriers. Consider electrical, crush and fall hazards and safety rules outlined in occupational health and safety Acts and Workplace Hazardous Materials Information System (WHMIS) regulations. (2)
  • Assess the severity of deviations of machined parts from specifications to determine whether they will pass inspection. Consider whether non-conforming measurements are critical or whether corrections can be made in subsequent machining steps. The reasons for non-conformities must be understood in order to know whether and how they can be repaired. (3)
  • Judge the most likely interpretation of sketches when information is vague or missing. Use knowledge of machining processes to interpret sketches with missing information. (3)
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