CNC Mill Operations


  • Applied mathematics
  • Cutting tool assembly
  • Geometrical dimensioning and tolerancing (GD&T)
  • Inspection
  • Machine maintenance
  • Machine safety
  • Machining applications
  • Measurements
  • Operations
  • Print reading
  • Shop safety

See Certification Toolkit for a complete list of competencies.

Performance Assessment Type: CAR

Theory Assessment: 48 questions

Standard: Machining Level I

Performance Assessment: Credentialing Achievement Record (CAR)

MET-TEC Inspection: N/A

Performance Affidavit: Affidavit of Successful Completion (found in CAR booklet)

Online Theory Exam:

  • 48 questions
  • 90-minute time limit
  • Online test fee: $35
  • Accredited program fee: $28
  • Proctor required
  • Paper version available ($70/$56)

Study Guide/Sample Test:

  • Available in Cengage Learning’s NIMS Machining Level I Study Guide
  • $27.95 retail
  • URL: (ISBN # found on URL)

Re-Take Policy for Online Theory Exam:

  •  Retake available anytime
  •  Fee reassessed for all retakes
  •  Proctor required for all retakes