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.

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 ...

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 ...