Gun Drill Geometry Explained: Angles, Tips, and Coatings
I select gun drill geometry based on the material I’m cutting. In my experience, the geometry is the single biggest factor determining whether a job runs smoothly or produces scrap. I have seen shops spend thousands on premium carbide drills only to get poor results because the geometry was wrong for the material. The geometry of a gun drill’s cutting tip determines how the drill performs. Different geometries are suited to different materials and applications. ...