"clipka" <nomail@nomail> wrote in message
news:web.49d146c530aab8122f4aa4190@news.povray.org...
> So what you need is either an "open" shape with a surface that models
glass
> sufficiently well without relying on IOR (which is difficult)

well this excercise has proven that ....

> Or a single lathe
> object comprised of a closed spline, or something alike.

well it's back to school for me on this subject .... I thought that's what I
had with the lathe object. I even set up a "Spline Lab" environment simular
to that outlined in the documentation. I'll be reading between the lines to
see what I've missed. I may be slow but I eventually get there.

Ciao

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