This is especially common when drilling metal. High-speed steel (HSS) bits are capable of prolonged drilling without losing their edge. They perform almost identically to high-carbon steel bits ...
Dr. Lucia Tirca received the Ph.D. degree in Structural Engineering from Technical University of Civil Engineering, Bucharest, Romania (2001) and was a postdoctoral fellow at École Polytechnique ...
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 ...