I got some 2% lanthanated sample to try in 3/32 and 1/8. I have not used the 1/8" yet but I was trying to use 2% thor before and it was balling over and sometimes making the arc wander. I was welding some 1/4" aluminum together in about every joint style tonight to more familiarize myself with its aluminum welding and using a 3/32 lanth. The end eventually rounds over some but hangs right on, I was running some good amps at times and never made it quiver. Twice I somehow got some filler on the electrode, lit it up for a few seconds on a scrap piece and you could almost watch the point go back to normal then good to go back in the weld. Bottom line, if you are not using lanthanated in your inverter machine you should be, unless you are using ceriated which I am not too familiar with. the local welding place I deal doesn't even have lanth, I don't think any of the ones near me do, how the heck is that, they sell brand new inverter tigs? btw on steel the 2% thor was doing fairly decent, haven't tried the lanth on steel yet.