Its aluminum. I tig welded it. It was just a small hole, so I just filled it and swirled to make sure there were no pin holes.
The cleaning action of A/C tig comes from the Electrode Positve portion of the A/C cycle.I figured TIG as you can see where the shield gas has cleaned the area around weld. Neat job and should be no issue at all .
Yeah basically pretty much the same as oxy welding, just create a puddle and keep it flowing. If you can oxy weld then you can TIG no issue In saying that oxy is good to practice with if need be, as Oxy/Acet with wire rod is a lot cheaper than alloy filler rod and Argon 😄 If your already a gun at oxy welding then go for it 👍 A lot of older tradies are good at it as they cut their teeth on Oxy as in those days Oxy and stick was basically all that was common..I was just going to explain that to him. Also, they take lots of practice for the average shade tree. Tigs can be very cost effective. Once one person finds out you have one everyone wants a job done for them. Lol