After a few hours of playing with the New model 200DX i am impressed, ( I had my Son In Law under a hood also first time tig welder ) Had a little setback with the pre flow knob set to high ( Mark Set me straight on that) Tried some passes on 11 ga Aluminum The machine had a very smooth and stable arc, Had to set the heat lower than i was used to with the 185, 95 amps was too hot with the 200DX settled on 75 amps and it did well. We tried some .095 Mild Steel tubing for exhaust and settled on around 65 amps. I also tried some .025 and .030 aluminum with the pulse setting and had good success keeping warpage to a minimum on the thinner sheet. I will have a little more time in tomorrow afternoon to try some more applications and see how the 200DX performs.

So far it's a Great Machine.