... yeah I bid on this welder in an online auction without knowing how really BIG it is! Last summer I was required by our electric utility to install a "smart meter" in my garage and while they were at it, I asked them to install a 380V 3-phase plug, just in case I might want some big toy...

Hi, thanks again for the tips. My experiments on AC have been with 150-180A and 50% balance, obviously I cooked the 1/16th tungsten and narrow cup with the higher amperage :oops: I tried the rosette/plug welds with about 100A. This metal welds nicely with 60-70 amps depending on whether there's a he...

Thanks for the welcome! And the tips! I looked at the DC electrode positive videos, which seems to be useful for thin plates and worth a try. DC negative seems to require helium and is for thicker pieces. I can't adjust the AC frequency nor do I have a pulse or other special effect to plug into my m...

Thanks, I'd be happy to achieve a plug weld, like I do with the MIG on steel, 6-7mm diameter or so. I have yet to develop that skill with a TIG on aluminum! The hole gets bigger and bigger until it hits the edge of the thin top piece, without melting the bottom piece, then when it hits the edge I ha...

Hi, this is my first post here. I've used MIG on steel for about 9 years and I also solder aluminum with oxyacetylene and now I'd like to TIG thin aluminum. I bought a used ESAB DTB250 square wave (380V), rented a bottle of argon, and worked through some online tutorials and TIG drills. I have no pe...