Whether its a vertical weld or laying flat on the bench, the same techniques apply, but getting comfortable can be the main thing. The ABC's of welding are ...Always Be comfortable
The ABCs of welding are Always BE Comfortable. Finding a way to prop when you are welding overhead can be the main issue and makes a big difference. Sometimes you might even need to use a clamp to prop on . whatever it takes to get comfortable.
This video shows the dip keyhole technique for a root pass on 2 inch sched 80 pipe. fill and cap passes also
This video shows tips and techniques for tig welding 18 ga outside corner joints along with flash tacking, different cups, and chill bars