Once a hole is started in stainless steel, don’t stop or reduce pressure until the hole is finished. No matter what type of drill bit is used, drilling stainless steel builds intense heat quickly.

Drill bits are primarily used for creating circular ... For drilling into metals such as stainless steel, your best bet is a HSS twist bit. High-speed steel offers greater resistance to the ...

It turns out that a hot solution of alum (ammonium aluminum sulfate), which is available in the spice rack of your local supermarket, will dissolve the steel drill bit without reacting with the brass.

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 ...

whereas cobalt is typically used for harder materials like cast iron or stainless steel. Tungsten-carbide tipped (TCT) and titanium nitride coated (TiN) drill bits are also popular. HSS is hard ...

So it’s always a joy to pick up a new trick, especially one as simple as putting a hardened edge on mild steel using a drill bit as a filler rod. This tip comes to us by way of [Jody], aka ...