Engineering

How to Become a Machinist (Operator and Setter of CNC or Conventional Machine Tools) in Ontario: Salary, Training, and Career Outlook

by Occupations.ca Team
10 min read

Have you ever looked at a car engine part, a medical implant, or an aircraft component and wondered, “Who actually makes these with such precision?” If you enjoy working with your hands, solving problems, and using high-tech tools, becoming a Machinist—specifically an operator and setter of CNC or conventional machine tools—could be a strong fit for you in Ontario.

Job Description

Machinists in Ontario make precision metal parts by operating and setting up CNC (Computer Numerical Control) and conventional machine tools such as lathes, mills, grinders, and drill presses. You read blueprints, calculate measurements, set up workpieces and tooling, adjust machine settings, run cycles, and inspect parts to tight tolerances. You might work in Automotive, aerospace, medical devices, energy, tool and die, or job shops that produce custom parts.

In many Ontario shops, job titles vary:

  • CNC Operator: runs existing programs and performs basic setups.
  • CNC Setter/Setup Technician: sets up machines, selects tooling, and ensures jobs run safely and efficiently.
  • General Machinist: does the above and often creates or edits programs, chooses cutting parameters, and solves complex machining challenges.

The trade is recognized in Ontario as General Machinist (429A), a Red Seal trade.

Daily Work Activities

Your day often includes:

  • Reviewing work orders, blueprints, and CAD/CAM outputs to understand part specifications and tolerances.
  • Selecting and installing tools, chucks, collets, vises, and fixtures.
  • Setting zero points, offsets, speeds and feeds, and coolant parameters.
  • Running trial cuts, verifying dimensions, and refining setups to reduce cycle time and scrap.
  • Inspecting parts using micrometers, calipers, height gauges, bore gauges, and sometimes CMM reports.
  • Monitoring tool wear, changing inserts, and troubleshooting vibration, chatter, or surface finish issues.
  • Keeping accurate records of setups, adjustments, and quality checks for traceability.
  • Communicating with programmers, engineers, quality technicians, and teammates to resolve issues and improve processes.
  • Following strict Safety procedures and maintaining a clean work area.

Main Tasks

  • Read and interpret blueprints, GD&T callouts, and process sheets.
  • Set up and operate CNC lathes and mills; occasionally grinders, EDM, or multi-axis machines.
  • Edit or input G-code/M-code at the machine controller (Fanuc, Haas, Siemens, Heidenhain, etc.).
  • Choose tools and workholding based on the material and part geometry.
  • Calculate speeds and feeds, depth of cut, step-overs, and tool life.
  • Perform in-process inspection and hold tight tolerances (often ±0.001″ or ±0.02 mm, sometimes tighter).
  • Deburr, finish, and verify surface finish requirements.
  • Document setup sheets and contribute to continuous improvement.
  • Comply with safety, WHMIS, and company quality systems (ISO 9001, AS9100, IATF 16949, etc.).
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Required Education

There are several paths into this trade in Ontario. You can start directly in industry, complete a college certificate or diploma in CNC/machining, or register for a General Machinist (429A) apprenticeship and earn while you learn.

Diplomas

  • Certificate

    • Pre-apprenticeship or postsecondary certificates in CNC machining or precision machining typically last a few months to a year.
    • Good if you’re new and want fast entry-level skills to become an operator.

  • College Diploma (recommended)

    • Two-year diplomas such as Mechanical Technician – CNC/Precision Machining or Manufacturing Engineering Technician are common.
    • Ideal if you want stronger theory, Quality Control, and CAD/CAM to progress to setup, Programming, and advanced roles.

  • Bachelor’s Degree (optional)

    • Not required for machinist roles. A Bachelor of Engineering (Mechanical/Manufacturing) can help if you plan to move into CNC programming, process engineering, or Leadership later on.

Length of Studies

  • Apprenticeship (General Machinist 429A)

    • Approximately 6,500 hours total, including about 720 hours of in-school Training (typically three levels) and the rest on-the-job, paid.
    • You can challenge the Certificate of Qualification (C of Q) exam after completing requirements.

  • College Diploma

    • Usually 2 years (four semesters) full-time.

  • Certificate or Pre-Apprenticeship

    • Often 12–52 weeks, depending on the program.

Where to Study?

You can pursue machining/CNC programs and apprenticeship in-school training at many Ontario public colleges. Explore school pages and contact their admissions or apprenticeship offices:

Key official resources you should bookmark:

Tip: If you’re in high school, ask about the Ontario Youth Apprenticeship Program (OYAP): https://www.oyap.ca/

Salary and Working Conditions

Entry-Level vs Experienced Salary

Wages vary by region, sector, and shift. In Ontario, typical pay ranges are:

  • Entry-level CNC Operator: about $20–$25/hour.
  • Experienced CNC Setup/Operator or General Machinist: about $27–$38/hour.
  • Senior setup technicians, multi-axis specialists, or those in aerospace/medical sectors can earn $38–$45+/hour, especially with overtime or shift premiums.

Many shops offer shift premiums, overtime, Benefits, and sometimes RRSP matching or profit-sharing. Apprentices earn a percentage of the journeyperson rate that increases each level.

For labour market and wage details in Ontario, consult:

Job Outlook

Ontario’s outlook for machinists is generally steady to good, with stronger demand in:

  • GTA (Greater Toronto Area): aerospace, medical devices, high-precision job shops.
  • Kitchener–Waterloo–Cambridge/Guelph: Automation, tooling, advanced manufacturing.
  • Windsor–Sarnia: automotive and moldmaking.
  • Ottawa: defense, tech manufacturing.
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Drivers of demand include retirements, reshoring, growth in aerospace and medical manufacturing, and the ongoing need for CNC setup talent. Employers report consistent challenges filling reliable, detail-oriented setters and multi-axis operators.

For official market Information:

Key Skills

Soft Skills

  • Attention to detail: You’ll hold tight tolerances and verify quality.
  • Problem-solving: Diagnosing chatter, tool wear, or dimensional drift quickly.
  • Spatial reasoning: Visualizing part orientation, toolpaths, and fixturing.
  • Communication: Clear updates with programmers, engineers, and quality teams.
  • Time Management: Balancing cycle times, changeovers, and Delivery deadlines.
  • Continuous improvement mindset: Suggesting better tooling, methods, or programs.
  • Teamwork and reliability: Showing up on time, following procedures, helping others.

Hard Skills

  • Blueprint Reading and GD&T: Interpreting datums, tolerances, and callouts.
  • Metrology: Using micrometers, calipers, gauge blocks, bore gauges, surface plates; reading CMM reports.
  • CNC setup and operation: Offsets, tool length/radius compensation, probing cycles, safe starts.
  • G-code/M-code: Editing at the controller; understanding canned cycles and subprograms.
  • CAM software: Exposure to Mastercam, Fusion 360, SolidCAM, or similar is a strong asset.
  • Workholding: Vises, soft jaws, collets, chucks, modular fixturing, zero-point systems.
  • Cutting theory: Speeds/feeds, stepovers, chip load, coolant strategies, and tool life optimization.
  • Materials knowledge: Aluminum, steels, stainless, titanium, Inconel, plastics, and how each machines.
  • Safety and quality: Lockout/tagout basics, WHMIS, PPE, SPC charts, and documentation.

Advantages and Disadvantages

Advantages

  • In-demand, hands-on career: You see and touch the parts you create.
  • Earn while you learn: Apprenticeship pays you as you build skills.
  • Tech-forward: Work with CNC, CAD/CAM, probing, and sometimes CMMs and automation.
  • Transferable skills: Your precision, problem-solving, and setup skills Travel well across sectors.
  • Career mobility: Move into CNC programming, toolmaking, quality, Supervision, or process engineering.

Disadvantages

  • Shift work and overtime: Many shops run 2–3 shifts to meet delivery schedules.
  • Physical demands: Standing, lifting, and handling metal stock and tooling.
  • Noise and coolant: PPE is required; environments can be loud and oily.
  • Tight deadlines/tolerances: Can be stressful; errors are costly.
  • Continuous learning: New materials, machines, and software require regular upskilling.

Expert Opinion

If you’re serious about becoming a machinist in Ontario, start by getting as much exposure to real machines as possible. If you’re in high school, take manufacturing technology, math, and physics, and join OYAP if available. If you’re already out of school, consider a pre-apprenticeship or two-year diploma that provides strong shop time and introduces you to CNC setup and CAM—these are the differentiators that get you hired faster as a setter rather than a basic operator.

Aim to land your first job in a shop that:

  • Runs varied, short-run work so you learn setups quickly.
  • Encourages cross-training on both mills and lathes.
  • Supports apprentices and has a clear path to the C of Q and Red Seal.

Build a skills portfolio: Keep photos of your setups, parts you’ve machined (with permission), notes on tooling you chose, and the tolerances you achieved. Learn to read and apply GD&T, and get comfortable with one major CAM package. Volunteer to improve a setup—reduce cycle time, improve tool life, or simplify fixturing—and document the results.

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Network through Ontario manufacturing associations:

Finally, register your apprenticeship early via Apprenticeship Ontario and stay connected to Skilled Trades Ontario for exam preparation and certification. Even though General Machinist is a voluntary trade, your C of Q and Red Seal can unlock higher pay, mobility across Canada, and credibility with top-tier employers.

FAQ

Do I need a licence to work as a machinist in Ontario?

General Machinist (429A) is a voluntary trade in Ontario, which means you can work without a Certificate of Qualification (C of Q). However, many employers prefer certified journeypersons, especially for advanced CNC setup roles, leadership positions, or in audited sectors (aerospace, medical). Earning your C of Q and the Red Seal enhances your resume and wage potential. Learn more: https://www.skilledtradesontario.ca and https://www.red-seal.ca

What’s the difference between a CNC operator, a setup person (setter), and a machinist?

  • CNC Operator: Loads parts, runs pre-set programs, does basic measurements and tool changes.
  • CNC Setup/Setter: Selects tools, installs fixtures, sets offsets, debugs first-off parts, and optimizes parameters.
  • General Machinist: Performs all of the above and may also edit programs, select processes, troubleshoot complex issues, and Support training or continuous improvement. In many Ontario shops, moving from operator → setter → machinist is the typical progression.

Can internationally trained machinists work in Ontario, and how do my credentials get recognized?

Yes. You can apply your experience in Ontario shops and pursue certification. If you have substantial experience, ask Skilled Trades Ontario about a Trade Equivalency process to determine if you’re eligible to write the C of Q exam without a full apprenticeship. You’ll need documentation of your past training and work hours. Start here: https://www.skilledtradesontario.ca and connect with Apprenticeship Ontario for guidance: https://www.ontario.ca/page/apprenticeship-ontario

Are there grants or financial supports for apprentices in Ontario?

Yes. Supports change over time, but typically include provincial and federal grants, loans, and employer incentives (e.g., completion bonuses, tool support, and training tax credits). To see current, official options and your eligibility, contact Apprenticeship Ontario: https://www.ontario.ca/page/apprenticeship-ontario and ask your college’s apprenticeship office for the latest funding information.

How can I move from operator to programmer or supervisor?

Focus on advanced setup first—multi-axis work, complex fixturing, and tight tolerances. Learn a CAM package (Mastercam, Fusion 360, or the system your shop uses), practice toolpath strategies, and document your improvements. Take on lead hand responsibilities—training new operators, organizing changeovers, and liaising with quality. Many Ontario employers promote strong setters into programmer, Team Lead, or Production Supervisor roles, especially if you combine hands-on skill with good communication and planning.

Writing Rules

  • If you’re just starting, aim for a pre-apprenticeship or entry-level certificate to build basic CNC and metrology skills and get hired as an operator.
  • Register as an apprentice early, track your hours, and complete your in-school levels at an Ontario college listed above.
  • Build your CNC setup capabilities—this is where Ontario shops see the biggest skill gaps and pay premiums.
  • Strengthen your GD&T, inspection, and CAM knowledge to accelerate your move into high-value roles.
  • Use official resources:

By following these steps in Ontario, you position yourself for a stable, well-paid, and technology-driven career as a Machinist (CNC operator and setter).

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