KC, I did watch that video, actually I watched it in between practicing welding. I'm brand new to welding, but already did a couple quick projects with ugly looking welds haha. This is a century fc90, it's fcaw only. You can't change polarity, it's just set to dc neg.
The reason for all that spatter is that I don't know what I'm doing lol. That's the short answer at least. The longer answer is that although this supposedly can weld up to 1/4", the settings chart only goes up to 1/8". So I was asking people on youtube who where welding with this thing what settings they were using, one guy told me to blast heat and wire speed to max and go with that. That's what it looks like with that setting. I had better results bumping down the wire speed to 7.