Great info man. I love reading tech from you. no homo. lol
Makes sense in my head now too. Argon is heavier than air, so it would “float” over that fluid below the grate creating a nice purge I guess.
Did you ever see that sweet table the guy built, I think it was on that DYI CNC forum. He made from scratch, and sick cnc plasma setup. Aluminum water bed, replaceable grates, adjustable feet, the entire CNC gantry… everything. it was a crazy build and very informative too.