Would the tig setup be appropriate for welding in patch panel or other sheet metal repair?
Kurt
Absolutely! no better method in my mind.
And as mentioned if you can braze or gas weld picking up TIG is not hard at all.
Ive got a Miller Dynasty 200DX and it's a fine machine, I highly recommend it. Can weld aluminum if you want and it will also Stick weld beautifully.
Grigg