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MACHINIST · CANADA

Machinist Red Seal exam prep app

Targeted English and Canadian-French practice, detailed explanations, private on-device progress and timed mock exams.

Free download

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What is Machinist Red Seal Exam Prep?

Machinist Red Seal Exam Prep is an independent Machinist Red Seal exam prep app for iPhone, iPad and Android. It has 1,500+ original questions in English and French, with an explanation for every choice, and timed 135-question mocks. The download is free with 50 questions and a 25-question sample mock; one C$19.99 purchase unlocks everything. No subscription.

Questions before you install

How much does Machinist Red Seal Exam Prep cost?

The download is free and includes 50 questions and a 25-question sample mock. One C$19.99 in-app purchase unlocks the full app for this trade. There is no subscription.

Prices are shown in CAD. Applicable taxes may be added at checkout by the App Store or Google Play.

Does the app work on iPhone and Android?

Yes. It is available for iPhone, iPad and Android on the App Store and Google Play.

Is the app in French?

Yes. Every question and explanation is available in English and French.

Do I need internet or an account?

No. The full app works offline and needs no account. Answers, progress and your study plan stay on your device.

Is the app official?

No. Red Seal Ready is an independent study app by Certloom Learning. It is not affiliated with the Red Seal Program, ESDC, the CCDA or any provincial apprenticeship authority.

Machinist: Ontario 429A and Red Seal

Looking for machinist Red Seal practice tests, general machinist exam prep or CNC study questions? The Machinist trade includes conventional lathes and mills, CNC, benchwork, grinding, measurement and shop math. Ontario calls this trade General Machinist (429A); a CNC-only course does not cover the whole exam.

Official Ontario trade profile (429A) · What Ontario code 429A means, with the other trade codes · Challenge the 429A exam in Ontario without an apprenticeship · Trade qualifier routes in other provinces

Choose a topic to review

Practice questions with answers and explanations

Free demo, full app and official study resources

Choose the resources that fit your next study session. The demo and app are independent study aids; use official sources for exam rules.

Try it free

25 reviewed bilingual questions for your trade, with answers and explanations, in your browser. No account. A timed 10-question demo drawn from the same set is also available.

Open the 25 free practice questions

Study with the full app

1,500+ bilingual questions, 135-question mock exams, interactive trade exercises and offline progress tracking. Free download on iPhone, iPad and Android with 50 free questions; one C$19.99 in-app purchase unlocks the full app. No subscription.

Prices are shown in CAD. Applicable taxes may be added at checkout by the App Store or Google Play.
Download on the App StoreGet it on Google Play

Check the official exam basis

Read the exam breakdown and Red Seal Program resources free of charge. Your provincial or territorial authority determines eligibility and registration.

Official exam information

Machinist Red Seal exam: questions before you book

Ontario details come from Skilled Trades Ontario, checked . Other provinces and territories set their own rules, so confirm yours with your apprenticeship authority.

How many questions are on the Machinist Red Seal exam, and what is the pass mark?

135 multiple-choice questions in four hours, with a 70% pass mark. Each question has four choices and one correct answer, according to the Red Seal Program’s exam preparation guide. The exam guide on this site breaks the questions down by work area.

Can I write the exam in French?

Yes. The Red Seal exam preparation guide asks you to confirm your exam language (English or French) when you register. In Ontario, Skilled Trades Ontario says exams are available in English or French only. Every question in the app is available in both languages.

Is the Red Seal exam online?

In Ontario you write it in person at an exam centre. Skilled Trades Ontario delivers certifying exams itself, and Red Seal exams there may be written on a computer through the rsexam.ca system with an invigilator present. Your exam confirmation email says whether your location uses it. In other provinces, check with your apprenticeship authority.

How much does the exam cost in Ontario?

Skilled Trades Ontario lists an exam fee of $150 plus HST, paid through the STO Portal. Apprentices who completed an Ontario training agreement do not pay it for their first attempt. Experienced workers who apply to challenge the exam also pay $235 plus HST for the Trade Equivalency Assessment. Other provinces set their own fees.

How long do I wait to rewrite the exam in Ontario?

30 days. Skilled Trades Ontario says there is a mandatory 30-day waiting period before you can retake an exam you did not pass, and you pay the exam fee again before rebooking. Rewrite rules differ between provinces and territories, so confirm yours with your apprenticeship authority.

Can I challenge the 429A exam without an Ontario apprenticeship?

Yes, through Skilled Trades Ontario’s Trade Equivalency Assessment. You need verifiable proof of the trade’s skills and experience at least equal to the full apprenticeship, school hours included (8,000 hours for 429A). If you are approved, you can write the certifying exam, and after passing you pay a fee to receive the Certificate of Qualification.

Sources: Red Seal Program: exam preparation guide · Skilled Trades Ontario: exam scheduling · Skilled Trades Ontario: finish an apprenticeship · Skilled Trades Ontario: Trade Equivalency Assessment

Machinist Red Seal exam: format, pass mark and how to prepare · Ontario trade codes explained

How to challenge the 429A exam in Ontario: eligibility, fees and steps · Trade qualifier routes by province · Red Seal exam rules by province: rewrites and fees

INSIDE THIS APP

Android phone

Turn shop measurements into the next machining decision.

The Machinist toolbox brings speed, feed, taper, thread and tolerance work into one practical field notebook—not a generic calculator page.

  • Real Android phone capture
  • Machinist-specific calculators
  • Visible units, ranges and decisions
Machinist Red Seal Exam Prep — Android phone: Use shop math in context
Use shop math in contextApp preview; see availability above

CNC DRY-RUN SAMPLE

The displayed G54 Z zero is 12.0 mm above the stock.

Tool length is loaded. The program first rapid move is Z5.0. The machine is in metric absolute mode.

How should the setup be proven before cycle start?

Confidence before feedback

Choose confidence first.

OFFICIAL ALLOCATION

Current 135-question blueprint

The bank and exam builder follow the published task counts.

ACommon occupational skills13
BBenchwork11
CPower saws8
DDrill presses9
EConventional lathes28
FConventional milling machines28
GPrecision grinding machines11
HCNC machines27

TRANSPARENCY

Independent study support, created with AI assistance

This AI-assisted bank of 1,500+ practice records is checked with technical, bilingual, source, calculation and structural-originality controls. Some records intentionally revisit related learner concepts in different task contexts. It contains no recalled or confidential exam questions, is not endorsed by the Red Seal Program and does not guarantee success. Always verify safety-critical guidance with official sources.