GTAW Steel: Welding skills status: (flat position: lay wire/horizontal position: dip wire). The limited welding position skills can effect weld quality/appearance: Welding single welds: flawless. Welding a whole project tack welded together: great. Other welds: Proficient in corner to corner weld joints. Butt-joints: 11 gauge dip wire flat/vertical up (backer block not required) and 16 gauge dip/lay wire horizontal (backer block is required).