Mild steel - used for bike frames, car body panels and fixings (nuts, bolts, screws and nails) An alloy that is grey and smooth, rusts if not protected Ductile and tough, easy to form, braze and ...

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 ...

vices High-carbon steel (tool steel) Hard but brittle, less malleable than mild steel, good electrical and thermal conductivity Taps and tools, eg screwdrivers and chisels Low-carbon steel (mild ...