I'm sort of new to this group and welding in general. I've been trying to determine the pros and cons of TIG vs MIG by reading through the posts here and it has been difficult.
I already own a TIG machine because I wanted to weld aluminum, so I'm already aware of the advantages of AC for TIG and the balancing of the wave for cleaning so there's one advantage for sure over MIG etc.
But everyone asks me why I would TIG anything when you could MIG it and get the job done quicker.
Why would you TIG and spend so much more time doing the job when MIG might do the job.
I always seem to see (on bike reality shows) guys TIGing frames but why? I'm going to assume they are going to grind the welds and fill them with Bondo anyway so why spend the time TIGing. Same for the gas tans they always seem to be fabricating.
I have a friend who's a pretty good welder and he had no problem MIGing a set of headers from a box on mandrel bends for his cobra so TIGing thin wall tubing apparently isn't necessary either.
Splatter apparently isn't a big deal on MIG with some of the sprays you can put on the metal.
I've heard that for racing car roll cages you aren't allowed to MIG because the welds are more brittle. IF that's true then this is the only real reason I've heard for TIG over MIG.
So what are the real advantage of one over the other? When and Why