TIG welding has particular benefits for sheetmetal work since the welds are small and relatively soft, ... These cups come in a variety of sizes; we're using a #7 cup here.

Welding Aluminum With TIG & MIG. You Say Aluuminium, I Say Aloominum. ... tungsten stick-out less than the diameter of the opening of the cup, and proper torch angle for welding a 90 like this.

TIG welding, or tungsten inert gas, is a process in which a tungsten electrode heats the metal you are welding, ... Your tungsten should stick out no more than the diameter of your cup ...