Day one: confirm the boundaries
A new CNC machinist needs to know where to report, who supervises work, which access is approved and how to request help. Start with confirming revision-controlled drawings, first-article inspection and who can approve offset changes. Do not mistake prior experience for familiarity with this company’s permits, customers or equipment.
Day two: show the documents that govern work
Introduce the relevant drawings, work orders or checklists and explain where approved revisions live. Walk through a realistic task such as first-article inspection before a long run. Discuss who signs off quality and how exceptions are recorded. Avoid treating documentation as an afterthought.
Days three and four: controlled practice and feedback
Assign a bounded task appropriate to the person’s qualifications. Have a qualified colleague observe, review the result and explain what needs improvement. machine guarding, lockout practices and chip handling require training and shop-specific procedures. Check that the employee understands both ordinary expectations and what to do when a plan no longer matches conditions.
Day five: test the handoff
Have the new hire summarize one job in plain language: original request, observed evidence, assigned action, verification and unresolved issues. For this trade, a useful example could be tool wear appearing as a drifting dimension. This tests whether the next shift or supervisor could safely pick up where the employee stopped.
Write a realistic thirty-day milestone
Choose one capability such as relating a drawing tolerance to an actual measuring method and stable machining process. Identify the mentor, the required practice, the proof of competence and the date for review. Good onboarding does not promise full independence in a week; it creates a clear route to safe, reliable contribution.