Candidate Assessment Report- Employer:
- Demo Co.
- Role:
- CNC Setup Machinist
- Candidate:
- Marcus DeLeon
- Date:
- 2026-06-15
Section 1 · Summary
The candidate demonstrated all seven assessed skill areas across the full session. No skill area was scored as partially demonstrated or not demonstrated.
| Stage | Correct | Time |
|---|---|---|
| Reading the print | 3/3 | 3m 0s |
| Planning the setup | 4/4 | 6m 0s |
| Proving out the first piece | 4/4 | 4m 0s |
| Programming judgment | 4/4 | 2m 0s |
Sets up a job from the work order
- Setup sequence followed an acceptable ordering: workholding, datum, tools, offsets, then program.
- Workholding selections and operation order matched keyed answers for both operations.
- Feed, G-code, and datum-before-offsets sequencing choices were each correct per the session key.
Proves out the first piece before running
- First-piece inspection was selected as the next action before releasing to production.
- The inspection step preceded the session exit, confirming correct procedural order.
Reads the print and GD&T correctly
- Datum B was correctly identified as the bore feature.
- All four critical-to-quality characteristics — bore, position, perpendicularity, and flatness — were identified.
- True position value of 0.019 was selected correctly from the print.
Holds tolerance and corrects with offsets
- Bore gauge was selected as the correct measurement instrument for the feature.
- Disposition chosen was to adjust, and the offset entered was −0.0019 in on T03 WEAR DIA.
- Offset direction was correct and magnitude fell within ±0.0005 of the session-keyed correction.
Catches tool wear and drift in production
- Wear compensation was applied at check 6, inside the keyed drift window of checks 6 through 8.
- Compensation direction was minus, correctly countering the rising bore drift.
- Compensation magnitude of 0.0017 in matched the observed drift error at check 6 within ±0.0005.
Does not ship suspect parts to make rate
- A defect part at check 4 was held for disposition rather than released.
- The hold decision was made under visible time pressure.
Organizational & culture fit
Assessed qualitatively — not timed or scored right/wrong. Provided for your team to weigh against your own needs.
- Supervisor override scenario was answered with comply-and-document, within the employer's acceptable set.
- QA conflict scenario was resolved by re-measuring, also within the acceptable set.
- Hot-job, night-shift communication, and short-stock scenarios each matched the intake-keyed answers.
Section 2 · Detailed results
Every question the candidate answered, with their response and the correct answer.
Reading the print
1. On this print, which feature is datum B?
Their answer: The Ø7.400 bore
2. Which of these features decide whether the part passes inspection? Pick the four that matter most.
Their answer: The Ø7.400 bore — its size and how true it runs (datum B); The true-position on the 8× bolt pattern; The perpendicularity of the bore to B; The flatness of the mounting face
3. The 8× Ø.290 holes have true position Ø.015 at MMC, to A | C | D. The holes are Ø.290 +.003/-.001. You measure a hole at Ø.293. How much position tolerance does that hole actually get?
Their answer: Ø.019 — .015 plus .004 bonus from MMC departure
Planning the setup
1. There is no setup sheet for this job. Put these setup steps in the order you would actually run them. Use the arrows to move a step up or down.
Their answer: Mount the workholding on the table and indicate it true → Establish datums — pick up part zero (G54) → Load tools into the carousel → Set and verify tool length / work offsets in the control → Load the program and dry-run it above the part
2. Op 1 turns the plate complete — the OD, the Ø7.400 bore, the Ø6.750 register, and the mounting face. This milling op picks up that turned part to mill the 8× bolt pattern and the angular features. How do you hold the part?
Their answer: Fixture that locates on the Ø7.400 bore and the mounting face, clamped over the part
3. A second milling op picks up the same part again for the back-side features. Datums A and B were already cut. How do you hold the part now?
Their answer: Fixture plate with a locating pin that picks up the Ø7.400 bore
4. Op 2 has to locate off datums made in Op 1. Which features must Op 1 finish so Op 2 has those datums?
Their answer: The datum -A- face and the Ø7.400 bore — the next op locates off both
Proving out the first piece
1. The setup is done and the program dry-ran clean above the part. The job is 250 pieces, due Friday. What do you do next?
Their answer: Cut one piece, take it to the bench, inspect it against the print
2. You need to check the Ø7.400 ±.002 bore on the first piece. Which gauge do you reach for?
Their answer: Dial bore gauge zeroed on a setting ring
3. First-piece results are in. Three checks are in tolerance. The bore reads out by the amount on the gauge — a size you can fix with an offset at the control. What do you do?
Their answer: Adjust the offset, re-run the piece, re-inspect before production
4. Enter the wear-offset correction for the bore tool to bring the bore back to nominal size. Type the amount in inches, and set + or − with the buttons.
Their answer: −0.0019 in
Programming judgment
1. You are planning the Ø7.400 ±.002 bore. It is datum B, so location matters. How do you cut it?
Their answer: Drill pilot, helical-rough, finish with a boring head — size and location dialed at the machine
2. Pick a starting speed and feed: 1/2″ 3-flute carbide end mill, roughing aluminum, rigid setup, flood coolant.
Their answer: 7,000 RPM / 55 IPM
3. This block finishes the bore. One line has a mistake a prove-out should catch. Which line is it? N10 G90 G17 G20 G40 G80 N20 G53 G0 Z0. N30 T05 M6 (1/2 EM FINISH) N40 G54 G0 X0. Y0. S6900 M3 N50 G43 H03 Z1.0 M8 N60 G0 Z0.1 N70 G1 Z-0.55 F25. N80 G41 D05 G1 X0.625 Y0. F30. N90 G3 I-0.625 F40. N100 G40 G1 X0. Y0. N110 G0 Z1.0 M9 N120 G53 G0 Z0. M5 M30
Their answer: N50 — H03 length offset called with T05 in the spindle; should be H05
4. Mid-lot, engineering revises a radius and adds two holes to the 8× bolt pattern, effective now. The change touches three toolpaths. Do you fix it at the machine, or go back to CAM?
Their answer: Back to CAM: re-post under the new rev, re-prove the first piece