If you needed to weld something in a pinch, what’s the minimum complement of equipment you could get away with? In [Professor Bardal]’s case, it’s a couple of motorcycle batteries and a roll of ...

Remember the 80’s movie, Flashdance? The female lead, Jennifer Beals, was a welder by day in a Pittsburgh steel mill and for many people that was their first glimpse of what a welder did for a living.