Being pneumatic and so inexpensive there is no speed control so it really goes. Ideally you'd want to be able to regulate the speed for various metals to get optimum cutting without overheating, etc. I have no doubt the cutting bit can eat stainless just not sure how bad it would bite back. I'll see if I have something laying about I can try it on and let you all know how it does.Slick piece of business Terry! Any feel for how it would handle stainless?