4g Position Welding _top_ -

Marco didn't understand. He spent the night before his fourth attempt in the shop alone. He set up the 6-inch schedule 80 pipe in the overhead position. He adjusted his hood to a #10 shade. He cranked the Miller machine to 92 amps—hotter than he was comfortable with.

The trick, he realized, wasn't to push the rod up into the gap. It was to hold a tight arc. So tight the flux created a surface tension bubble, a little glass ceiling that held the molten metal in place against the pull of the earth. 4g position welding

He was a good welder. Great, even. He could run a 1G bead that looked like a stack of dimes laid out by a jeweler. But the overhead joint was his gremlin. Every time he struck an arc, gravity won. The puddle sagged, dripped, and left a ropy, slag-filled mess on the ceiling of the test plate. Marco didn't understand