In my last intro to metal shop class at 3rd Ward I was introduced to the plasma cutter. In the metal shop I knew as a kid there were two ways to cut steel. A ginormous cast iron power hacksaw, or an oxygen/acetylene torch. That was it.
The plasma cutter works on pretty much the same principle as MIG welding, only without the filler rod. An electrical arc is struck that essentially melts a continuous hole through the materials as you drag it along the surface.
I have a couple of more shop passes to finish-up my course allotment. I’m sure I will find some way to squeeze in a few more passes with the plasma cutter before it’s all over.