Can't you do a lathe in Hex. (I haven't used it in a while even though I have it) For a quick vase in AC3D I would just make an oulie of half the vase and align it to the y axis then lathe and whammo you are done. Wings a bit more work cylinder extrude and size a few times till you have the rough ouside shape and then select the top and intrude smooth done. I gave up hex and went back to Wings 3D you can pick Wings up for free at wings3d.com. I think wings is more intuitive than hex and more stable too.  Metasquoia is also a pretty cool freeware program.

The wit of a misplaced ex-patriot.
I cheated on my metaphysics exam by looking into the soul of the person next to me.