Quote Originally Posted by mr_modify1 View Post
You still have to go thru the indicating process. I use the 4 jaw only if I have to use it. I always thought someone would come up with a self centering 4 jaw chuck but I have not seen one yet. There must be a better solution than all the measuring and indicating.
4 jaw scroll chucks do exist but I'm not sure why you would want one. The whole point behind general use of a 4 jaw is to get run out down to nothing or nearly so. Scroll chucks just are not that accurate even when new, with a little wear they can be terrible.