Woody,
It's the 'apples & oranges' deal! They aren't' the same process, but they are perfect for their intended use.
FCAW will produce a nice heavy slag that pops off very easily to reveal a bead that looks like it was poured into the joint.
This process inherently takes more heat to create the weld so it isn't something you would use in a body shop on sheet metal.
A MIG process with the proper shielding gas and a skinny .023 wire would be just the ticket for those rusted out cab corners and such!
These are two different animals!
Stuart
