4g Position Welding [portable] Page

When he finished, he cut a cross-section of the weld, etched it with acid, and held it up to the light.

In welding terminology, the designation refers to a specific welding position defined by the American Welding Society (AWS). 4g position welding

"You're thinking about it too much," said Old Lin, the shop master. Lin had been welding since before robots took half the jobs. He had a 4G stamp on his helmet that he’d earned in 1987. "You’re fighting the steel. You have to seduce it." When he finished, he cut a cross-section of

He struck the arc.