Almost any general-purpose twist bit will do a decent job of drilling holes in metal. In fact, most drill bits labeled specifically for metal are manufactured to drill through various materials, ...
Drilling large-diameter holes in a high-production environment requires a tool that can handle aggressive material removal while maintaining efficiency. That’s where indexable insert drills shine.
Figure 3: 3D slice through the Dios Padre drilling area looking west. Dios Padre breccia zone (Red- projected) and the drill ...