Affordable plasma cutters are becoming a popular step up from an angle grinder for cutting sheet metal in the home workshop, but cutting long straight lines can be laborious and less than accurate.

A plasma cutter isn’t as common, and while they’re certainly useful, [Rulof] wanted to forgo the expense of buying one off the shelf. Instead, he used parts of an old welder and a few other ...

Plasma cutting machines cut materials and metals using a stream of high-velocity ionized gas, known as plasma, as a heat source. These devices require a supply of compressed air or gas with an ...