Dimensional restoration is a big part of aerospace maintenance.
A whole lot of aerospace tig welding is restoring worn metal.
And that often involves being able to weld a very small bead on an edge.
The thinner the metal, the more difficult it is so its good to start thick and work your way down to the thickness of the actual job
The skill of stacking beads uniformly halfway overlapping a previous bead is fundamental to multipass welding on pipe or structural shapes. This is some of the best concentrated stick welding practice there is.
Tanks, Reservoirs, Pontoons, can usually be repaired using a doubler patch that uses a lap joint
Usually this test is given with a procedure that allows for 1/8" electrodes.
But some welders are being required to use 5/32" 7018 which is more challenging. This video has a few tips that should help
