I am making a homebrew plasma cutter out of an old 3 phase SCR fired welder. (it has two sets of secondaries on each 3ph leg and can be rewired to produce up to 290V open circuit voltage).

The high voltage power supply mostly works by now, and I am just trying to get the plasma torch to work. Here it is, a mystery torch:


Is it a miller torch? If not, any idea what it is? How can I order consumables for it?