I've had a few people ask me how I turn ornaments so tonight I took some pictures along the process to try to explain.
I glue the globe or ball from 8 pieces cut at 22.5 degrees, like pieces of a pie with 8 thin 1/8" strips in between as spacers. The first picture shows a group of them glued together using rubber bands as clamps and a shameless plug for titebond glue. Then in the second pic it shows how I hold them in the talon #2 jaws to round them, drill the center hole, and hollow them. The 3rd pic shows drilling it with a jacobs chuck and a 5/8" forstner bit.