Live Thread Adapter
Thread adapter allows precision centering of spindles or dowels at the tailstock end. Also, it provides the ideal system for the mounting bowls for hollowing.
After turning the outside of the bowl blank, turn a tenon on the bowl bottom. Then mount your chuck to the tailstock using this adapter; grabbing the tenon with the chuck while still attached to the faceplate.
When the chuck and blank is remounted on the headstock, your bowl will be perfectly centered.