twist drill bits, hole saws and annular cutters. 1. Twist drill bits. Especially in steel thicker than ¼", twist drill bits will require extra pressure, lots of lubrication for cooling and some ...

Discover some of the best hole saw kits for DIYers and pros as you read this buyer's guide. Find the best hole saw kit for ...

A drill bit is a rotary cutting tool that makes holes. The point of the bit contacts the material you're drilling into, while the shank — the back end — is clamped in place by the jaws of a ...

Four times the holes, four times the trouble. With the fate of repetitive motion injury looming due to the need to drill 1,200 holes, [bitluni] took matters into his own hands and built this nifty ...