More machining than welding, but got to at least weld a little today. Turned a slug, and milled a square hole in a round peg. then welded a piece of tubing that the end of a shaft will eventually fit inside and be welded. This will ultimately operate the oil valve that feeds the burner of a steam locomotive boiler. Got to try out the TIG function of the engine house's Miller Multimatic 220. It seemed to make a nice smooth DC TIG arc. I'd stick welded 7018 with it before, and it did that well(but I don't believe it will run 6010.) I was happy with it, considering it was the first TIG bead I'd ever ran with it.

!/8" wall tube to a square socket made of 1045. Pre-heated the 1045, and welded at 150A. ER70S-2. There's a 1/2" long stub that the tubing is pressed over to locate it, so it had a nice heat sink behind it.