Thanks guys!
Andyp wrote:Very smart Terry. Is that foot ring all you used to hold it in the chuck or has it been reduced?
Yes, it has a reverse dovetail that I expanded the chuck into. Of course, I was risking cracking the foot off but I went gently, both with the mounting and the turning. The recess is a couple of mm deeper than the outside too so it's expanding into the mass of the bowl rather than just the foot. I have done this with large platters in the past - I have some home made cole jaws but they are too small to accommodate anything over 12". Finishing the foot when you do the outside is much quicker than faffing about with jam chucks to finish the foot, but obviously I wouldn't recommend it for a deeper bowl because of the mass. That would be quite scary if you got a catch. You can just about get away with it with a shallow piece and a hard wood like maple.