Night EDM Operator
Posted Sep 14, 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 fixture or setup you built to hold a tricky part accurately.
What they are checking: Whether they can solve setup problems themselves, which the posting calls out as part of the job.
How do you keep the EDM department clean and organized, and why does it matter?
What they are checking: Whether they see housekeeping as part of accuracy and safety, not an afterthought at the end of shift.
What would you do
You are running more than one machine at a time on nights. How do you keep track of them all?
What they are checking: Whether they can manage several machines safely on a shift with little backup and nobody to ask.
A part comes off the machine and one feature is out of tolerance. What do you check first?
What they are checking: Whether they troubleshoot in a logical order, like setup, wire, flushing and offsets, rather than rerunning blindly.
You hit a problem at midnight that you can't fix. What do you do so the machine doesn't sit idle all night?
What they are checking: Whether they make good calls alone on nights and communicate clearly to the morning crew.
About the work
Walk me through how you set up a wire EDM job from the print to the first cut.
What they are checking: Whether their wire EDM setup experience is real and step-by-step, since the posting asks for one to three years.
How does setting up a sinker EDM job differ from wire, and what do you watch for with electrodes?
What they are checking: Whether they know both machine types well, since this role sets up and runs wire and sinker machines.
What inspection gauges are you comfortable with, and how do you document finished parts?
What they are checking: Whether they can verify their own work and leave records the day shift can trust.
What preventive maintenance do you do on an EDM machine, and how often?
What they are checking: Whether they keep machines running between jobs, since the posting stresses keeping machines going.
Read this blueprint callout for me. How would you set the machine to hit that tolerance?
What they are checking: Whether they can turn a print into machine settings, which is the core skill the posting asks for.
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Practice this out loudThe full job description
As published by Flex.