Hardened and heat-treated steel defeats ordinary bits in seconds. Successful drilling hardened steel requires harder-than-the-work tooling, very low speed, and disciplined technique.Understand What You Are CuttingHardened steel has been heat-treated to a high Rockwell hardness so it resists wear.

Stainless steel is tough, corrosion-resistant, and notorious for chewing up drill bits. Success at drilling stainless steel comes down to the right bit, slow speed, and steady pressure rather than brute force.Why Stainless Is ChallengingStainless steel work hardens, which.

A rounded-out screw head can stall an entire job. The good news is that most people can remove a stripped screw with tools already in the workshop and a little know-how.Why Screws StripScrews strip when the driver can no.

A snapped bit lodged in your workpiece is frustrating, but it is rarely the end of the project. With patience and the right approach you can remove a broken drill bit without ruining the hole or the part.Stop and.

Not all wood drill bits are created equal. Brad point, spade and auger bits each excel at a different job — here’s how they compare so you can pick the right one for clean, fast or deep holes.Brad Point.

Forstner bits drill clean, flat-bottomed holes that no other bit can match — the go-to choice for cabinet hinges, dowels and precise woodworking. Here’s what they do, the sizes to know, and how to get chatter-free results.What Is a.

The angle ground into the tip of a drill bit has a big effect on how it starts, how it cuts, and which materials it suits. Here’s what drill bit point angles mean and how to choose between the.

Cutting clean, strong internal threads starts with drilling the correct hole. This guide explains tap drill sizes — what they are, how they’re worked out, and the exact drill bit to use for common UNC, UNF and metric taps.What.

A pilot hole is a small hole you drill before driving a screw or a larger bit. It guides the fastener, keeps your material from splitting, and makes screws far easier to drive straight. This guide covers what pilot.