Just wanted to point out that Spatter is not present when a GMAW machine is set correctly, and in different techniques.

I used mild 1/4" mild steel and 2.5" exhaust pipe scrap, very similar to the materials joel used........... Also .030 wire well below 100 amps, so well within the range of the welder joel used............

I have another welder setup with .020 wire at the other farm, and it would of done a better job than this even, but i was welding on a tender truck and just did this after i was done

K so pics to prove material used

So this is what we are comparing it to.......Joel's

notice on joel's that there is not nearly enough manipulation of the electrode and obviously the machine is not set correctly. Also look at the bead, the manipulation (movement back/forth) is very inconsistent and varying. Contrasting look at mine, very tight movments that are very uniform and consistent
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And mine,
First bead is just your regular horizontal steady burn with manipulation...

Next bead is a triggered method, on-off-on-off...... with manipulation

Last is what should be the nicest bead, Vertical Down, but the wire speed should of been down a little

Oh, yeah i just used a hand wire brush to remove the smoke/stain to show the weld, and note that there is no undercut on either member even with a large difference in thickness. Look at how the edges tie in showing good penetration and enough amperage. And put my initials on it to prove

And if any of those welds broke because of "lack of penetration" i would blow any chosen guy

Yep i like being an asshole