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 ...

From preparing the worksite and checking equipment to following proper operational procedures, here are key steps to maximize safety for earth drilling jobs.

If you’ve ever been caught in the situation of needing to drill a clean straight hole down the center of a bolt or rod, you’ve probably tried and ended up with a broken bit or tilted hole ...

Kennametal explores technological advancements in composite drilling, including stacked laminates, for aerospace applications ...

The holes were being made in the short part (see illustration). The shape of the iron to be ' bored or Drilling an awkward piece in a milling machine. drilled prevented it from being done in a ...