MIG is the hardest process to learn to do PROPERLY. Now some people will think I'm nuts...but I'm not, sure baking 2 pieces of metal together with mig is easier than with TIG but actually doing it properly is not. With TIG (and foot or thumb control) you have full control over the priocess while welding, sure the adding of the filler rod is something you need to practice but with MIG you start with the settings and then are commited to lay down the bead w/ that setting. furthermore the weld pool is harder to see with the big gun in place and with the bright white weld pool the edges are also hard to see (that's just how your retina works), so making a clean weld with good penetration with MIG is much harder to do than with TIG.
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