TIG Welding Class
Enroll

Introduction: Torch and Tungsten

The tungsten will need to be re-sharpened if it's been dipped into the weld puddle.

Tungsten Electrode

TIG welding uses a tungsten electrode to aim an electrical arc at the workpiece. Tungstens are available in 3 sizes: 1/16", 3/32" and 1/8". In general, use a larger tungsten for thicker material.

The tungsten must be sharpened on the tungsten grinder before assembling the torch. The grinder has three collets - one for each size tungsten.

Never sharpen the painted end; the paint color identifies the type of tungsten.

  1. Put on gloves.
  2. If needed, install the correct collet for the diameter of your tungsten.
  3. Turn the grinder on and insert the tungsten into the collet and press it against the wheel.
    • The position of the vacuum chamber will block the view of the grinding wheel.
  4. Rotate the tungsten against the grinding wheel, smoothly and with even pressure.
  5. Grind a point on the end and remove the tungsten from the grinder.
  6. Rotate the vacuum chamber all the way to the left.
    • The grinding wheel will be visible.
  7. Insert the sharpened tungsten into the correct hole on the top of the grinder and gently press down to blunt the end.

Assembling the Torch

  1. Screw the collet body into the torch body.
  2. Screw the gas cup onto the torch body.
  3. Push the tungsten into the collet and then thread the assembly into the collet holder.
    • Make sure the tungsten is poking a little ways out of the gas cup.
  4. While holding onto the tip of the tungsten, screw the back end cap onto the torch.
  5. Adjust the tungsten so that it sticks outside of the gas cup between 1/8" and 1/4".
  6. Tighten the back end cap so that the tungsten doesn’t move.

CLASS PROJECT

Share a photo of your finished project with the class!

Nice work! You've completed the class project