Which of the following is step one in cleaning and pointing a tungsten electrode?

The initial step in the process of cleaning and pointing a tungsten electrode is to heat the tungsten by striking an arc. This action serves two critical purposes. Firstly, it helps to burn off any contaminants or impurities that may be present on the surface of the tungsten, ensuring that the electrode is clean before the actual welding process begins. Secondly, heating the tungsten helps to form a pointed tip, which is essential for achieving a consistent and stable arc when welding.

While using a cleaning compound is an effective method for cleaning, it is not the first step in the process. Similarly, sharpening the tungsten on a grinder is typically done after the initial cleaning and pointing have been accomplished through the arc method. Cooling the tungsten after heating is also a subsequent step, rather than the first step. Therefore, striking an arc to heat the tungsten electrode stands as the foundational action in preparing the electrode for welding.