Yknow, I was thinkin about it last night and there's no reason why you couldn't run flux core in it either. It'd save the hassle and expense of runnin argon, just wouldn't be as pretty of a weld. I love the way ours at work welds, makes even me look like I know how to weld. She never called me today, so I guess I'm gonna hafta call her tomorrow and see if she still has it, Nate