Answer
Oct 01, 2025 - 01:09 PM
The "rule of 33" in TIG welding refers to a guideline where the tungsten electrode should stick out approximately 1/3 of the inside diameter of the gas cup, and the arc length (distance from tungsten to workpiece) should also be about 1/3 of the electrode diameter. This helps ensure good gas coverage and arc stability during welding.
