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 ...

The least expensive twist bits are made of high-speed steel (HSS), and these basic bits are just fine for most metal-drilling ...

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.

I'm trying to figure out which type of bit is best for drilling thru about 1/4" of galvanized steel. I recently used a standard carbon-steel bit to drill thru the steel. While the bit was able to ...