Tag: HF Ignition

TIG Welding Machines: What is Scratch-Start, Lift-Arc, and HF Ignition?

What is Scratch-Start TIG Ignition? Scratch start is a very basic and rudimentary process, usually found on low-cost inverter welders that have been essentially designed for Stick (MMA) welding.  The TIG tungsten electrode is scratched on the job to initiate the arc, and