The "4" indicates the vertical position (think of a wall), and the "F" stands for "Fillet" (a triangular-shaped weld joining two pieces at a right angle). In this position, the welder deposits metal onto a vertical plate to join it to another plate, typically horizontal or also vertical.
To successfully weld in the 4F position, you must master three variables: amperage, travel speed, and body position. 4f welding position full
It is often hard to see the root of the joint clearly through a welding hood while working overhead. The "4" indicates the vertical position (think of
Fast and consistent. Slow travel allows the pool to become too large and drop. you must master three variables: amperage