Hiya Pete,
In reference to your 1st image (your original post pix) I think you posted a pair of these previously without the captive rings?
I said then that I absolutely loved them and the same is true of this pair.
Having never turned a goblet I'm afraid I can't offer you any helpful advice other than to boost your ego by saying that I like these even better with the caprtive rings, very elegant indeed and a classic, fluted style, beautiful.
Cheers,
Lee.