We’ve seen something similar to this before, when hard-facing filler rod was built up on the edge of a mild steel slug to make a cutter for internal weld seams. We liked that hack, but knowing ...

eg screwdrivers and chisels Low-carbon steel (mild steel) Ductile and tough, easy to form, braze and weld, good electrical and thermal conductivity but poor resistance to corrosion Nuts ...