www.weldingtipsandtricks.com What are the 2t and 4t settings and when do you use them? what is upslope and downslope? start amps and end amps? and preflow and postlow. When using an inverter tig machine with a torch switch and no foot pedal amperage control. Foot pedals offer lots more amperage control but they are a pain if you are working on a ladder. Here is how the 2t and 4t switch positions work on an Everlast Powertig 250ex tig welder.
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