I used step drills to cut holes in stainless steel for a small fabrication shop. These things caused him to lose his job. Step drills, whether cheap or high-quality, are short-lived when machining stainless steel. The one-size-fits-all Greenlee cutter, which I use most often, shows no signs of dulling after about 50 cuts. With these torches, once the cut is complete, the torch rests against the edge on the side. Allow the cutter to stop in this position before removing it from the holeโฆ