TIG Welding 101 Gas Tungsten Arc Welding (GTAW ... The "17" designates it is as a 17-series 150-amp air cooled TIG torch. This arms you with all the information you'll need to purchase consumables ...

I've drilled thousands of holes in stainless steel, and I've found it's best to use a very slow speed. Once stainless gets too hot, it instantly hardens, and the game is over after that.