I tried TIG welding at work. Spent maybe a half hour at it, and they looked pretty good. If you can do nice caulking, then the welds may be OK too. The welder there said they were good too. I dipped the filler rod a bit on the tungsten, and the one welder guy grumbled, but the girl welder was more tolerant. I think the gas motors put out more heat than glow, so maybe brazing is good-if MACs is using it!. We had some furnace brazing at work too. We just TIGed it together for position, and I think there were strips of solder in between where it was needed for the fins and such. It was sent out for that. We pretty much only worked on aluminum. I have been collecting stuff to do some brazing again. I think I just need flux. The guy at work later was a teacher at a nearby college, and he gave me the test to fill out, and I passed the course. Not perfect score, but good enough. I could have just paid the fee, and not even gone to a class?