Frequently Asked Questions
Posts tagged: TIG Welding
What is Scratch-Start, Lift-Arc and HF Ignition in TIG Welding?
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 must be quickly lifted off the...