Welding Overhead 4F position tube to plate with 5/32" 7018 is a bit more challenging than with smaller electrodes but the same fundamentals apply for the most part.
Tight arc length, rod angle, and restarts are demonstrated with instructive arc shots and body positioning.
A common weld repair is to weld up a part that was accidentally machined wrong ..or a tool crashed or a corner got smashed when someone dropped a part.
In this video, I had a piece of thick aluminum that was a proto type part but it had an area that was also mis machined. preheat and bead sequenc...
TIG Welding Stainless Steel tubing with full penetration requires a purge in order to prevent severe oxidation on the inside.
There are some applications where purging the inside is an absolute must...especially in food service applications.
The manifold in the video is not required to be done ...