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", ...

There are times in a man’s life when he needs to drill a square hole through an 8mm thick piece of steel. If that man doesn’t have one or two thousand dollars to spend on commercial tooling to do this ...

It’s often said that you don’t need a drill bit; what you need is a hole. How you make that hole is up to you, but it’s a given that you want to make it as efficiently as possible. The drill bit, ...

Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? The Takeaway: Diablo’s Impact Strong Step Drill Bits are a fast, convenient way to ...

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.

In this video I walk through my Hougen Rotacut sheet metal hole cutter kit and show why it replaced my twist bits and hole saws. I open the case, explain the center punch, arbor and spacers, then ...

We may receive a commission on purchases made from links. With a career spanning four decades in the aerospace industry, as a machinist, airframe structures installation mechanic, and technical skills ...