How To Close A Revolved Surface?

[project-2501-69]

Hello,
how can I close a NURBS surface after revolving? If I close the surface via open/close surface in U direction I get an unwanted connection at the bottom of e.g. my glass. I need to close the surface to work with the miss_physical shader. I guess it`s a very basic question, sorry, but I was not able to find a solution for this problem in modeling tutorials yet.
Thanks a lot in advance,
regards Ute

[sanny]

What do you mean by "closing" the Surface? Cause when u revolve a curve the resulting Nurb will be automatically closed. Can you please send me an image of your object. I'd really like to help you.

[project-2501-69]

I start with an open CV curve (degree 3, first and last CV x=0). To get a glass I revolve around Y axis. The Nurbs surface has Form U: open and Form V:periodic. I tried to take a closed CV curve (then I get a nurbs surface with Form U and V periodic) but I can`t harden the first and last CV of the path curve to get a straight-line connection. All the revolve tutorials use to take an open curve so I thought it must be possible to close the surface afterwards.
Thanks for your efforts,
best regards
Ute

[sanny]

<<<>>>

Well, as far as i know, you can't have a closed surface in both directions at the same time. For exaple, take a default nurbs shphere and you will see that the U form is set to "open" Although it looks like a closed object.

If you really need to close it, what i suggest is that you create the nurbs surface and convert it to a polygon. Then, to close the holes just use the "Fill hole" command and, to preserve the smoothed edges, convert it to a subdivision surface.

Are you sure you really need to close the surface?

You wrote about a "miss-physical" shader but i don't know what it is at all. (sorry !!) Could you explain it to me? I'd appriciate it. I wish i could be more helpful...

TheWebAgent