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 ...

Cutting applications for drill bits include general-purpose, aluminum, brass, bronze, and copper, ceramic, hard or hardened materials, plastic, steel, stainless steel, titanium and other exotic ...

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 ... for larger drill bits, but the ...

inserts may be referred to as PDC bits and are commonly used in directional drilling operations. Cross bits and chisel bits are fixed-head bits that have hardened steel or carbide blades. Chisel bits ...

Hardened steel drilling sleeves provide consistency and accuracy in your drilling applications. 2 high-quality 3/8” titanium-plated stepped drill bits for durability. One long and one short ...

whereas cobalt is typically used for harder materials like cast iron or stainless steel. Tungsten-carbide tipped (TCT) and ...