After you have the ball chucked in the lathe, glue a block of wood to the other side of the ball and seat your tail center on it. You could even turn a dowel on the block and grip it with a chuck in the tailstock.
Originally Posted by Robin in Niagara
Turn a shallow groove in the center of the ball then, with the lathe spinning at slow speed, use a hand saw to cut through the ball. Let the spinning ball do the work and move the saw slowly back and forth to clear the dust from the teeth. You can do this with the sawsall blade if you stand on the other side of the lathe. I have parted wood this way with a back saw. It works quite well. I think it would be easier than using the sawsall. If you're worried about loosing the ball, leave a small piece in the center then finish the cut by hand.
J.P. Rap Mount Hope Ont.
Carpe Ductum (Seize The Tape)
"In this world, you must be oh so smart, or oh so pleasant." Well, for years I was smart. I recommend pleasant. Elwood P. Dowd