CNC Operator how-to

How to Approve a First Article on a CNC Machine

First parts protect the whole run.

Updated By the Career Education Institute Curriculum Team
Quick answer

First parts protect the whole run. In short: run; deburr; measure, then complete the remaining steps below.

Step by step

  1. Run one part.

  2. Deburr.

  3. Measure every dimension.

  4. Compare to the print.

  5. Adjust offsets.

  6. Get sign-off.

Safety reminders for CNC operators

  • Keep doors closed during cycles
  • Never reach into running machines
  • Wear eye protection
  • Know emergency stop

CNC · G-code · Work offset · Tool offset · Cycle start · Feed hold: see the full CNC operator glossary.

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