There are three tool options to consider when drilling large-diameter holes in thick steel: twist drill bits, hole saws and annular cutters. 1. Twist drill bits. Especially in steel thicker than ¼", ...

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, ...

If you want to create perfectly round holes in wood, metal, or plastic, you’re going to need a hole saw. These cylindrical saws are powered by any corded or cordless drill, and their hollow shape ...

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.