Torch Build Out

• A. Collet, Collet Holder, Tungsten
• B. Nozzle, Gas Diffuser, Shielding Gas
• C. Power Supply, Cable, Ground
• D. Filler Wire, Holder, Gripper

Answer: (A)

The build-out of a TIG torch refers to the inner components that secure the tungsten electrode and provide the electrical connection. The tungsten electrode is the active tip that forms the arc, so it must be held rigidly and precisely centered. The collet grips the tungsten tightly, with its size matched to the tungsten diameter to prevent wobble or misalignment. The collet holder threads into the torch and, when tightened, applies the clamping force through the collet to hold the tungsten in place while also completing the electrical path from the power source to the electrode. Together, these parts ensure a stable arc, proper tungsten protrusion, and reliable current delivery.

Gas nozzle and gas diffuser are part of the shielding gas delivery system, shaping and directing gas around the arc, but they’re not the components that hold and power the electrode. The power supply, cables, and ground are external to the torch’s immediate build-out, providing the current and grounding needed for welding but not forming the electrode-holding assembly. Filler wire components may be used in TIG welding, but they belong to wire feeding rather than the inner electrode assembly of the torch.

So the essential elements that make up the torch’s internal build-out are the tungsten electrode, the collet, and the collet holder.