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CNC Operator Interview Questions

23 CNC Operator Interview Questions
Question 1 of 23
How much more did you learn at your first job that your training didn't teach you?
How to Answer
There are often lessons that we learn on the job that we cannot learn just from sitting in the classroom. Give an example of a situation like that.

Answer Example
"My first job taught me many things that we did not learn in school. Mainly, my supervisor taught me some great time shortcuts on the lathe that were really helpful."
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Question 2 of 23
What is a vernier?
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How to Answer
Answer this briefly and matter of factly.

Answer Example
"From my understanding, a vernier is a small movable graduated scale for obtaining fractional parts of subdivisions on a fixed main scale of a barometer, sextant, or other measuring instrument."
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Question 3 of 23
What are the CN languages?
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How to Answer
How you answer this will show the hiring manager how well versed and up to date you are within the industry. Answer briefly, giving an example of the language(s) that you are most familiar with.

Answer Example
"G-Code is the number one language used to instruct CNC machining devices what motions they need to perform such as work coordinates, canned cycles, and multiple repetitive cycles. Industry has standardized on G-Code as its basic set of CNC machine codes so this is what I am trained in. Are there other languages you would prefer that I know?"
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Question 4 of 23
What is a micrometer?
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How to Answer
Answer this briefly and matter of factly.

Answer Example
"A micrometer is a gauge that measures small distances or thicknesses between its two faces, one of which can be moved away from or toward the other by turning a screw with a fine thread."
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Question 5 of 23
How many sixteenths are in an inch?
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How to Answer
You can take a moment to think, if needed, but make sure you are right!

When you answer this question you can also talk through your answer so that the hiring manager understands how you are coming to your conclusion.
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Author of CNC Operator Answers and Questions

Rachelle Enns
Rachelle Enns is an executive head-hunter and job search expert. Utilized by top executives from Fortune 100 & 500 companies like Fitbit, Microsoft, General Electric, Nestle, and more, she helps professionals position themselves in a competitive marketplace. Rachelle founded Renovate My Resume, a company that focuses on helping job seekers get their edge back. Renovate My Resume creates stand-out resumes, cover letters, LinkedIn profiles and professional summaries for new grads, all the way to corporate executives. Rachelle spends much of her time training career coaches, recruiters, and resume writers. She also holds interview workshops for students and interns, globally. For great tips and tricks, follow Rachelle on Instagram @_rachelle_e or @renovatemyresume.
First written on: 02/11/2011
Last modified on: 08/17/2018

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About CNC Operator

August 21st, 2018

Numerical control (NC) refers to the automation of machine tools that are operated by abstractly programmed commands encoded on a storage medium, as opposed to manually controlled via handwheels or levers, or mechanically automated via cams alone. The first NC machines were built in the 1940s and '50s, based on existing tools that were modified with motors that moved the controls to follow points fed into the system on punched tape. These early servomechanisms were rapidly augmented with analog and digital computers, creating the modern computed numerically controlled (CNC) machine tools that have revolutionized the manufacturing process.