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For welders and inspectors sitting CWI Part B

CWI Part B: know where to find it fast

Free CWI Part B practice: 10 questions, answers explained as you go, score by domain.

Free 10-question check

Full course $99: 354 practice questions, each explained. See the course

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Question 1 of 10 · free checkUntimed

Welding Inspection and Discontinuities

A convex fillet weld replica is checked with a leaf-type fillet gauge. The drawing calls for a single fillet size. The vertical leg fits the 3/8 in blade and the horizontal leg the 5/16 in blade. What size is recorded?

Press A-D or 1-4 to choose an answer while this question is on screen.

Choose an answer to begin

The free check uses the same question style and explanations as the course.

Part B is open book, and slow page-flipping burns the clock. Drill the Book of Specifications with a free 10-question check, every miss explained.

Before you start: allow about 26 minutes, and have the Book of Specifications open. Most questions send you to a clause or table in it.

Get the free Part B Book of Specifications from AWS

  • 10 questions, untimed
  • Answers explained as you go
  • Scored by domain
Ask Tack AI Explains your misses, answers from this course, and builds practice from your weak spots.Try it free: 3 asks on the free check, 10 more with your email. What Tack can do

Want a timed run? Try the free 25-question mini-mock. The first 5 need no email.

Every question is original and written to American Welding Society's published content outline.

How it works

  1. Answer 10 questions, freeUntimed. Check each answer to see why it's right, with a hint where one helps.
  2. See your score by domainBroken down by outline domain, with your weakest one named.
  3. Study what you missedAdd your email and exam date for a study plan, or practice at exam pace.

    Want exam pace? Take the 25-question practice test (about 65 minutes)

The CWI Part B course

Available now · instant access

Learn the tool kit, the specification and the qualification records, then practice.

  • 7modules of lessonsEvery task on the outline
  • 3full-length timed exams46 questions in 120 minutes each
  • 354practice questionsEach one explained
  • 2worked calculationsStep by step
  • 21specification drillsFind it fast in the Book of Specifications
  • 1week-by-week study planSet to your exam date

Tack, your AI study assistant, comes with the CWI Part B course and every bundle: a week-by-week plan from your exam date and weak areas, step-by-step walk-throughs and a weak-spot quiz. Up to 40 messages a day.

  • My study plan: a week-by-week course from your exam date and weak areas, with today's set ready. Lose a week and I re-plan it
  • Stuck on a question? Tap Walk me through it, Explain like I'm new or Show a worked example
  • A quiz on your weak spots, your misses back on a spaced review, and explain it back to me to lock it in
  • After 30 answers, I show you the patterns in your misses and a practice set for each one
  • Exam week: a day-by-day plan for your last 7 days
See all 7 modules
  1. Measuring welds with the inspection tool kit
  2. Judging replicas against acceptance criteria
  3. Reviewing a WPS against its PQR
  4. Checking welder qualification records
  5. Bend specimens and test results
  6. NDE in the exhibits booklet
  7. Finding your way in the Book of Specifications
Part B course$99Get the Part B course · $99

Instant access. Terms and refunds · Secure checkout by Stripe · Billed by Nori Software

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Bundles

Look inside the course

The screens you get after checkout, with sample answers.

  • Book of Specifications lookups
    Course practice screen for CWI Part B. A question asks which part of the Book of Specifications to open to group two electrodes. The correct annex is marked and the explanation names what each wrong annex covers, with the reference below.
    Book of Specifications lookupsDrill the lookup the exam keeps asking for: which annex, table or clause answers the question. The answer and the reason come straight after.
  • Timed Part B form
    Timed practice exam screen for CWI Part B with a countdown clock, a flag-for-review button and a numbered question navigator that marks answered and flagged questions.
    Timed Part B form46 questions on the 120-minute clock, a flag on every question and a navigator that shows what you answered and flagged.
  • Readiness by domain
    Readiness by domain panel for CWI Part B with an accuracy bar per domain. Each domain is marked on track or needs work with its accuracy and answers given, and a link to drill the weakest one. It ends with the line that these are practice results only.
    Readiness by domainEach Part B domain rated from your own practice answers, with a one-click drill into the one that needs work. Practice results only, never a prediction of the real exam.
  • Today's 10
    Today's 10 card on the course home for CWI Part B. It reads 10 questions picked for you, 3 missed questions and 7 from your weakest domain, and says a question leaves the set when you answer it right on a later day.
    Today's 10Ten questions a day, picked for you. A question you miss comes back on a later day until you get it right.

Every answer comes with a full explanation.

Also free

Practice reading a fillet gauge

AI study assistant

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AI study assistant

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Tack is your AI study assistant. Answer a question, then ask Tack why.

Example

Why is that one wrong?

TackI'll show you why the right answer works, why each other option falls short, and where to look it up.

Example of how I explain. Answer question 1, then tap Ask Tack why. 3 free asks, 10 more with your email. I'm AI, so check important details against your references. Meet Tack

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Email me the free CWI Part B exam-day kit

What to bring, arriving and the testing room, plus the booking steps, from the exam body's own candidate guide. Sent to your inbox.

Exam at a glance

Format
46 questions in 120 minutesBook: open (AWS Part B Book of Specifications, provided at testing; also a free PDF)
Delivery
Paper-based practical exam at an AWS test site, taken before Parts A and C
Exam fee (paid to AWS, not us)
Initial CAWI/CWI exams (all three parts): $1,255 member / $1,520 non-member. Initial exams + Part B Training: $2,000 / $2,265. Paper/email application surcharge $125. The initial fee covers all three parts.
Retakes
Max 3 retests in the 3 years from the original test date; first retest needs no extra training; 2nd and 3rd need documented further training (a longer minimum for a full three-part retest than for one or two parts; see AWS QC1 6.2.5). Retest fees: Part A or C $445; A and C $870; Part B $385; all parts $915 member / $1,180 non-member.

What it covers

Welding Inspection and Discontinuities34%
Procedure and Performance Qualifications28%
Destructive Testing and Properties8%
NDE Application8%
Utilization of Specifications and Drawings8%

The free 10-question check follows these domains, subject to the available practice questions.

Practice test FAQ

How long is the free 10-question check?

The free check has 10 questions, is untimed and takes about 26 minutes. You see the answer and explanation after each question. It is a short study check, rather than a full-length exam simulation. Want exam pace? The 25-question timed practice test is also free. You can pause it, and it saves your place.

Is this a free CWI practice test for every part?

Choose Part A for fundamentals, Part B for the practical, or Part C on D1.1, D1.5 or API 1104. Already a CWI or SCWI? The WPQ2 endorsement has its own check too. Each has its own free check and outline. Part B questions send you into the Book of Specifications, as the exam does, and every miss is explained so you know where to look next time.

Is the 10-question check free?

Yes. You can start the check and see your score and weakest domain for free, with no signup or payment. Your score in each domain unlocks when you add your email.

Where does the practice content come from?

Every question is original and written to AWS's published outline. Treat the results as a starting point for study.

How is the check scored?

Practice items are grouped by the published outline's domains, subject to available questions. The check weights domain results using the configured published outline weights. This practice percentage helps set study priorities; it does not predict your exam score or certification outcome.

What do I see after finishing?

You get your score, the published pass mark and how many more correct answers would reach it, your weakest domain and what the CWI Part B course holds for it. Add your email to see your score in each domain and get a free study plan.

How should I use the result to study?

Start with your weakest domain. The CWI Part B course has lessons, explained practice questions and timed exams on it. Want to test your pace first? Take the free 25-question practice test.

The Fillet Gauge app for iPhone and AndroidToday's questions and your study plan in your pocket. Fillet Gauge already works in your phone's browser today.

See it on your phone
  • Discontinuity calls: measure, then accept or reject

    Drawn weld profiles with undercut, overlap, convexity, underfill and misalignment. Read the scale, then make the call.

    Try 10 free cases

More free help

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Give your students or members the free 10-question CWI Part B check on your own page. Copy this HTML with its attribution link. Scores open in a new tab on Fillet Gauge. Paste both lines; if your site strips scripts, the frame keeps a fixed height.