Thanks. I have been using 1 1/2" cutoff wheels I bought from McMaster, but I finally went through all of them. Tried to order them from Amazon and they wanted proof I was a licensed dentist. Huh. The company does list dental work as a potential use, but obviously it's not the only use. And nobody is going to stick a 1 1/2" cutoff disc in someone's mouth anyway. Ended up buying some Chinese cutoff wheels, but they are a little thinner and it's not hard to break them at the hub. Probably order the MUSA ones from McMaster when I go through all of them.