Author

Jeffrey A. Badger, Ph.D.

Jeffrey A. Badger, Ph.D., is an independent grinding expert. He will be giving his 3-day High Intensity Grinding Course from Sept. 26-28 in Columbia, S.C., hosted by S.L. Munson. Visit www.thegrindingdoc.com for details. He can be reached by phone at 512-934-1857 or via email at [email protected].

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Published content

Articles February 15, 2026 Jeffrey A. Badger, Ph.D.

ID Taper: Grinding

A shop battling taper in ID grinding, especially when the hole is deep, turns to the Grinding Doc. It’s as if the wheel is just riding over the workpiece.

Articles October 15, 2025 Jeffrey A. Badger, Ph.D.

Final Thing To Do Before Grinding

The Grinding Doc resolves a debate over whether a shop should balance a wheel before grinding or dress a wheel before grinding.

Articles August 15, 2025 Jeffrey A. Badger, Ph.D.

Grinding Fatigue

The Grinding Doc reviews a recent finding that bad grinding caused an Alaska Air Boeing 737's landing gear to fail during landing on Aug. 30, 2023.

Articles May 15, 2025 Jeffrey A. Badger, Ph.D.

Varying The Workpiece Rpm: Design & Engineering

A shop asks the Grinding Doc to explain whether the option to vary the workpiece rpm on its cylindrical grinding machine is legit, and how it works.

Articles March 15, 2025 Jeffrey A. Badger, Ph.D.

Exit Nozzle: A Good Idea?

Shop asks the Grinding Doc to address whether mounting a nozzle at the wheel/workpiece exit point can improve coolant effectiveness in grinding operations.