I have an old tig welder it says model 250 ac/dc-hf tig -metallic arc welder it has a 2 prong plug to hook up the switch to switch on the torch I am having problems finding info on the machine I have a book from miller but I don't see anything about a pedal to control the heat I was wandering if there is one that would work and if I can't buy one I was wandering if anyone might have some info on how I could build one any information would be greatly appreciated
thank you for your time