Hello All, I'm new to wood turning. I have a Rikon 12"x16" mini lathe and just got a WEN LA4275 2.75-Inch 4-Jaw Self-Centering Keyed Lathe Chuck Set for Christmas. The chuck will only clamp around a 1-3/4" tenon. I've read that the tenon should be 30% the size of the bowl; so if I want to make a 10" bowl I need about a 3"tenon. Is that correct? What size chuck will fit a 3" tenon? Thanks for your help.