I wonder whose images I was looking at ? I just looked back through yours and indeed the torch is a liquid, I notice the Miller and pedal.We have an ESAB 352 where I hang out big tig welders are fun, the high frequency destroys lots of electrical devices(radios,cordless phones) left laying on the welder too long, any big box that can make a bolt of light come out of a hand held torch is impressive.
What really interests me is your cuts are all so nice, you can't do them all on the lathe have you got access to a plasma table, water jet or something ? DB
Patience: A minor form of despair disguised as a virture.