This article makes the case that a core drill is the best tool for opening existing holes. Being designed for the operation, the two-flute indexable drill can produce more accurate holes with less tool wear and breakage than alternatives such as boring bars, drills or endmills. The article describes the design of a typical core drill and explains how it is used.
Imported from the CTE archive to seed discussion on MFGAxis.
Originally published on CTE: 1997-02-01
CTE source: https://ctemag.com/articles/performance-edge/
Legacy path: /articles/performance-edge