Quote Originally Posted by miked View Post
If a magnet does not stick and there are no sparks when you hit with the angle grinder then it is Al if you see sparks then its SS. By the way the sparks from SS are less that with regular steel. I suggest you use the magnet from a hard drive. Mike.
Iv got a big magnet from a speaker right now. Needed the grinder at work and didnt bring it home with me this weekend, but I went back out and checked again. a knife does slice little slivers off rather easily so i'm guessing its AL.