Welding. There’s something almost supernatural about being able to melt metal and use it to glue other pieces of metal together. It’s an experience you must have if you’ve never done it before.

Although some engineers have had success in spot welding steel and aluminum together, it has largely been considered impossible to achieve reliable, continuous welds directly between the two ...

Q.I have always enjoyed your column inbut I don't think you answered Stan Collin's question (in the July '19 issue) about using a copper backup pad for welding up small holes. You did give some great ...