Another Method
[QUOTE=Steve Schlumpf;1412777]Patrick - I have both of the Monster systems (love them!) but, in my opinion, were not designed to go that deep.
Patrick, I agree with Steve about the Monster system. I have the articulated system and find it starts chattering badly beyond about a foot.
I've turned several deep vessels using the technique shown on Jack de Vos' website. (Perth, Australia - jackdevos.com - "the making of..." link.) You hollow from both ends, saving the "plug" from the bottom to make it solid again when you're finished. It requires the use of a steady-rest, but most deep vessels do, anyway.
Spinning is good on a lathe, not good in a Miata.