Quote:

No way those are Mig , no signs of spatter



Well that's just BS. Spatter is a result of or combination of the gas used, the wire type, the welder setting and the cleanliness of the base metal. Not to mention that an anti-spatter spray will also do the trick. I do a lot of mig with no or very little spatter. I'd rather spend the few extra bucks on a mixed gas than the extra time cleaning spatter.

As for those photos, a proper tig weld is easily identified by a concave or flat puddle whereas a mig weld will most often be convex. As for the "stack of dimes" look, yeah its pretty but its no better than a continuous mig bead.