Getting a Grip on Four-Jaw Lathe Chucks
Turning a bowl with a four-jaw chuck
Start on the outside
For mounting side-grain bowl blanks, many chucks come with a screw center. To use this center, install it in the chuck by gripping it with the jaws. Drill a hole equal in diameter to the root of the screw and slightly deeper than its length, centered on the top face of the blank. Then thread the blank onto the screw. Engage the lathe tail center for additional support while turning the rough shape of the bowl. Now turn the outside of the bowl, shaping its bottom to be held by the chuck jaws, as shown in the photo. Screw-center mounting allows for easy removal and remounting of the blank while maintaining its centered position.
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