LOL I wish I had asked about flux core when I gave it a whirl the first time. Larry holding it farther away produces a better weld and less spatter. Starting with a clean tip weld a little to warm things up then dip the tip about an inch MOL and back to welding. I may go 10 or 15 min welding steady NOW that I discovered what Irnsrgn said, with minimal trouble. The closer you get the more spatter and since the tip is closer it builds up faster and thicker.
Also I have been having greater success dragging the wire, rather than pushing. With MIG I had pretty good success either way. I definitely need to work on uphill with FCAW It really stinks. Downhill of course looks better already.
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