Easy 4 Jaw Centering Adjustment - avoid difficulties with opposing jaws.
This is a video just showing a slight variation on the traditional method for centering a part in a 4 jaw chuck. By using two chuck keys instead of one, it's really easy to move opposing jaws in unison so that you are not fighting against a fixed jaw. This avoids the "spring" you sometimes get when you are adjusting the last few tenths and makes setting up a 4 jaw a breeze.
