I simply have more faith that a keyed chuck, that once tightened, will stay tight. I have had keyless chucks (albeit on cordless drill) that would come loose. I don't want to take that chance with a lathe.
Hey Oliver,
Whereas you have one that becomes too loose, I have one that was torqued too much and is now dedicated to bottle stopper turning since I can't get the stopper mandrel out of the thing! I honestly don't think that I gorilla-gripped it that badly when I last inserted the mandrel, but I could have been mad at the wife, the dog or the world that night... :biggrin:
Needless to say when I bought a new chuck I went with a keyed one to hopefully prevent a recurrence of the issue.
Dan, I know that the keyed chuck is a real PITA sometimes, but I hope you don't run into a similar issue to mine.
Michael