Success in the 4F position requires precise control over heat and the weld puddle to prevent sagging or dripping.

angle to the joint, with a slight "work angle" to ensure even distribution between both plates. 4. Execute Welding Technique

Performing a 4F weld requires high-level heat and puddle management due to gravity.

The 4F position is often considered the most difficult of the basic welding positions (1G, 2G, 3G, 4G/F).