I am glad I read this because I did not think of a possible catching issue. I just bought a bench grinder for metal polishing which I have not used yet but I had used one attached to my drill and had a rash all over my hand from what I figured was contact dermatitis from the polishing compound. The rash caused all the skin on my hand to peel off and took weeks to get better. Of course, that is MUCH better than loosing a finger. Glad I read this!