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", ...

A small copper tool found in a museum drawer is now confirmed as the oldest rotary metal drill in ancient Egypt, dating back 5,300 years.

A hole is nothing. Or more precisely, it’s the absence of something—wood, metal, concrete, or any number of different materials. Since holes are nothing, why do we care about them and how to make them ...

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, ...

Drilling Tools International ( (DTI)) just unveiled an announcement. Drilling Tools International Corporation (DTI) recently announced its strategic acquisition of European Drilling Projects (EDP), an ...

Drilling Tools International Corporation DTI, a global oilfield services company, has completed the previously announced acquisition of Titan Tools Services Ltd., a U.K.-based company renowned for its ...

CNET staff -- not advertisers, partners or business interests -- determine how we review products and services. If you buy through our links, we may earn a commission. If you want to work on projects ...

"Egyptian craftspeople mastered reliable rotary drilling more than two millennia before some of the best-preserved drill sets." ...