It looks like a pieceof lava rock when I finish . Full of holes. No cracks but plenty of little pits. As soon as a puddle forms it starts to boil and spit. Then it seems to crawl away from the pin holes that form. I can take scrap pieces on the table and run a nice bead ...without even cleaning it.

I think I may have backed myself in a corner. after grinding as much of the old weld out as I could, cleaning with wire brush and atone things just got worse. now the weld is totally un acceptable. I tried more heat, less heat, more gas, less gas and I am at my wits end. there seems to be nothing I ...

thank you very much. yet again i am humbled by my dirty ways. somehow I knew that would be the answer. i did clcean but i never thought that TIG would be so sensitive. I will go and cleanse my ways. Thank you again.

Hi all, I am just learning TIG and have a question. I am trying to weld DOM mild steel tubing. I am using thoriated tungsten, ER70S-2 filler and Argon gas . Sometimes I finish a weld and don’t like the look of it so I want to go back over it. When I do it gets all bubbly and sparkly. When finished I...

thanks

Hi all, I just got my hands on an old P&H 300 TIG/stick machine. Big yellow! Can anyone explain the "phase" and "intensity" controls to me? I am relatively new to TIG. The machine has high frequency. Is HF used in conjunction with DC welding or just AC? Does the phase control...