Which of the following is NOT a welding position?

The concept of welding positions is fundamental in understanding how different welding techniques are applied relative to the orientation of the workpieces. The correct answer, which identifies "back hand" as not being a recognized position, is rooted in the established classifications of welding positions that are based on the orientation of the weld joint.

Welding positions are categorized primarily into four classifications: flat, horizontal, vertical, and overhead. Each of these positions serves to describe how the welder and workpiece are oriented during the welding process.

• The flat position is where the welding is performed on the top surface of a horizontal piece, providing the easiest and most effective position for many weld types.
• The horizontal position involves welding along the joint of two pieces that lie horizontally, requiring some skill to maintain bead control.
• The overhead position involves working on joints located above the welder, which poses unique challenges due to gravity affecting the molten filler material.

In contrast, "back hand" is a term that describes a technique or method of holding the welding torch or electrode rather than a definitive positional classification like the others. This technique can be applied in various welding positions but does not represent a category of its own within the standard welding position classifications. Understanding this distinction is important for welders