The cutter uses a small steel screw and a bit of glass with a handle as the cutting head. A metal base serves as the other electrode and a heat sink. For the plasma pen, two brass electrodes ...

Plasma cutters are ridiculously cheap these days, just cruise by the usual online sources or your local Harbor Freight if you’ve got any doubt about that. But “cheap” and “good” don’t ...

If a shop was “high-tech,” it might have a metal cutting bandsaw or abrasive-disk chop saw. In recent decades plasma cutters appeared ... Sheet metal nibbler. Hand-powered nibblers sell ...