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 ...

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 ...

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 ...

Mining and well drilling bits typically feature a threaded connection for attachment to a drill or drillstring and a hollow body through which drill fluids are circulated. Drill fluids are required to ...

High-speed steel (HSS) is found in most standard ... times until they are too short to use. TCT drill bits, as the name ...