I know, you've seen it mentioned a gazillion times, wear good gear with wirewheels. I've seen it too. So I always wear both safety glasses and a face shield when I use the wire wheel on my grinders. Yesterday I'm doing a quick spur of the moment fix on a portable bandsaw and I derusted some washers in a vise. Coarse wire cup on a 4.5". Didn't wear my shop coat, just grabbed the grinder (and eye protection) and went at it. Trying to angle the grinder away from me but still feeling some hits of paint flecks on my bare arms and then a prick. Look down and there is a wire sticking out from my arm. Almost a 1/2" long. Standing upright, like a tiny flag pole. A bit surrealistic actually. Ok, odd enough but not completely a surprise either. So I pull on it a bit and it comes out a bit . I pull some more and it comes out some more. Finally, it came out all the way, it was buried in there about a 1/4"... Damn glad it wasn't my eye!