Positions | Fillet Welding

| Position | Identifier | Description | Difficulty | |----------|------------|--------------------------------|-------------| | Flat | 1F | Weld face roughly horizontal. Both legs lie flat. | Easiest | | Horizontal | 2F | Weld axis horizontal, but one leg vertical. | Moderate | | Vertical | 3F | Weld axis vertical. Two sub-types: uphill (3F↑) or downhill (3F↓). | Hard | | Overhead | 4F | Weld underside of a joint; face downward. | Most difficult |

You might be thinking, "A weld is a weld, right?" fillet welding positions