F1 Welding Position [updated] Jun 2026

In overhead (4F) or vertical (3F) welding, gravity pulls the molten metal away from the joint, requiring high skill levels to keep the puddle in place. In F1, gravity pulls the metal into the joint. This allows for faster travel speeds and larger weld deposits without the risk of the metal sagging or dripping.

Setting up for a 1F weld requires careful attention to the work angle and travel angle. The work angle should generally be 45 degrees, splitting the difference between the two workpieces to ensure equal heat distribution. The travel angle, or the tilt of the torch in the direction of the weld, usually sits between 5 and 15 degrees. If the angles are off, the welder risks undercut on the top piece or a lack of fusion at the base. f1 welding position