Machining the Perfect Hole | Different Methods Compared!

What's the best way to machine a perfectly round hole? Should you bore it? Should you CNC machine it? Let's find out!

So you got a blueprint given to you. The part on the blueprint features a hole with tight shape requirements. What would be the best method to achieve the perfect roundness? Is it ok to just drill it? Should you drill it and rim it? Should you drill it and bore it? Or should you do it on a CNC mill?
Derrick Hogan, CNC technology instructor at North Georgia Technical College, answered the question for us.
He machined the same hole using different methods, analyzed the roundness of each hole using a CMM, and then compared the results.
Which method do you think was the most accurate? Watch the video to find out!

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This video is part of our new video series: ” LEARNING FROM THE PROS”!
We are collaborating with educators from the most advanced technical schools around the country to provide you with tips and tricks, educational videos, and machining technology insights that will help you become a better machinist and learn something new about our beloved metalworking trade.

This project, presented is part of the North Georgia Technical College's tool&die program.

To learn more about the CNC machining program at North Georgia Technical College visit https://northgatech.edu/academic-prog...

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