There are three tool options to consider when drilling large-diameter holes in thick steel: twist drill bits ... to be industrial-grade tools. “Twist drills remove all the metal from the ...

Drilling through metal can be somewhat intimidating for beginners, but there’s nothing to worry about. It’s just as easy as ...

It remains to be seen how well it would work for larger drill bits, but the clocksmiths seem to have had success with their tiny drills and broaches.

This is a pro-grade drill with impressive stats when it comes to drilling capacities ... fairly standard 13mm metal chuck, which will take all manner of different drill bits, while all-metal ...