Saying MIG is no good for “structural welding” when you’re talking about building bridges, in a thread about replacing rusty panels on a Barracuda isn’t relevant.
And yes, TIG is great and the preferred method for cage building and sheet metal repair. But most guys rebuilding their own car in their own garage don’t have $5k to drop on a TIG.
MIG is great for anything you need to do for repairing a unibody. Would TIG be better if you’ve got the machine and the skill? Absolutely. But that wasn’t the point, just like building bridges and skyscrapers isn’t the point.
It's about integrity. A stick will have better structural integrity... As will flux core. Mig is preferred on thinner metal, as it will normally penetrate enough to hold... But usually because it just is more appealing to the eye. Mig is not the strongest weld, because it will work, doesn't make it the best, or only way. I will say that we can just agree to disagree, but to say it's the only way is flat out wrong!
