stainless is no different than any other metal,and all tools will go bad if used wrong,the problem most people have is they try to blaze through the metal which will burn up even a million dollar bit, go buy a quality bit ,get some tapping oil and go slow, watch the color of the shavings, if they start turning dark blue or purple your going to fast, and youll burn up the bit, then again you could probably go to a sheet metal shop and have them punch holes in them for fairly cheap