While shops can perform rotating-workpiece deep-hole drilling on a turning machine, a dedicated deep-hole drilling machine using what's known as counter-rotation will net much better results.
Imported from the CTE archive to seed discussion on MFGAxis.
Originally published on CTE: 2023-02-23
CTE source: https://ctemag.com/news/counter-rotation-maximizes-deep-hole-concentricity/
Legacy path: /counter-rotation-maximizes-deep-hole-concentricity