CNC Machining Technician (10pm-6am)
Posted Jul 2, 2026 · We last checked this listing on Oct 6, 2026
Likely interview questions for this role
Written from this job description, not a generic list. Each one notes what the interviewer is really checking.
About your past
Tell me about a time you found a fixture alignment problem. How did you spot it?
What they are checking: Whether they can troubleshoot beyond the program to the physical setup holding the part.
Tell me about a change you suggested that cut cycle time or scrap.
What they are checking: Whether they look for improvements on their own rather than just running parts.
What would you do
You are on the 10pm to 6am shift and a machine goes down with no engineer around. What do you do?
What they are checking: Whether they can troubleshoot independently on third shift and know when to stop and escalate.
About the work
Walk me through setting up a CNC machine for a new aluminum die cast part, from loading the program to the first good piece.
What they are checking: Whether they know a full setup sequence including offsets, tooling, and first-piece verification.
A feature is drifting out of tolerance over the shift. What could be causing it, and how do you fix it?
What they are checking: Whether they can trace dimensional drift to tool wear, heat, or fixturing and adjust with offsets correctly.
How do you decide when to change an insert or drill before it fails?
What they are checking: Whether they manage tool life by data and observation to prevent scrap and broken tools.
Which measuring tools have you used, and how do you read CMM data when it comes back?
What they are checking: Whether they can verify parts with calipers, micrometers, and gauges and act on CMM results.
Die castings can have porosity under the surface. What happens when your tool hits it, and what do you do?
What they are checking: Whether they understand machining issues specific to cast aluminum and when to involve quality.
Read this blueprint callout for me. What does a position tolerance mean for how you check the part?
What they are checking: Whether they can interpret prints and GD&T well enough to make the right measurements.
What routine preventive maintenance do you do on a CNC machine?
What they are checking: Whether they take care of equipment so small issues do not become downtime.
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Practice this out loudThe full job description
As published by Pace Industries.