Johnny ----
The thing that is SO different from MIG is that TIG is all over the map --- the cup sizes etc just "depends" -- depends on what you're welding the gas flow required - are you doing an inside corner with a bunch of stick out - or an outside corner on real thin materials.....
You'll need a bunch of different cups - various torch sizes - various fillers.... as you get along in this world (of TIG).
Basic cups - #5 / 6 / 7 / 8
Basic fill - ER70S-6 for mild steel --- 308L for stainless -- 4043 for Aluminum
Get some 1 1/2% Lanthanated 1/16th dia for (1/8th" and under material) and 3/32th for 1/8th and thicker -- it's good for AC (alum) and DC (all else)
GET A GREAT --- not just good enough --- GREAT auto darkening helmet
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