Chuck problems: My chuck will not grab the drill correctly, what can I do?

Remove the drill and look inside the chuck to make sure that the chuck jaws are seated properly. If not then Unscrew the chuck knob, opening the chuck jaws just far enough to remove the drill bit from the chuck. Using the palm of your hand, lightly push down on the top of the jaws until they all bottom out in the chuck jaw retainer slots. The jaws will travel and secure the drill bit evenly now. The chuck is ready to use. It may be necessary to repeat these steps each time you sharpen a drill bit. Clean out your chuck by spraying out the inside with compressed air, it is necessary to do this periodically as grit may build up inside the chuck.