Before we go any further, we wanted to introduce to you the latest and greatest TIG welder from Miller, the Diversion 165. Yes, it is a home hobbyist TIG unit. It has only three switches. One is the power switch, the other that is the AC or DC for either steel or aluminum welding, and the other is the metal thickness dial from 22-gauge up to 3/16-inch. That is it. It is a perfect companion with the smaller Millermatic MIG welders. What is also interesting is the fact that a foot pedal for this home TIG unit is optional. A power switch is built into the gun itself and that controls the arc from the tungsten.