how to model a ceiling lamp

[Zanna_Bianca_]

Hello, everyone! !
I write you because I have this problem, and you can certainly give me a handle:biggrin:

on autocad 2011 I wanted to model a ceiling lamp, to use in my renderings... I have 3d knowledge with basic commands, I used it at high school as a geometra, I tried in every way that my mind could imagine, but I can't... Do I need to use mesh and/or nurbs, or do I need it? ?

I wanted to do it like this:
Thanks to who can help me...

 

[Ezio Olivato]

You could try by doing a section of the ceiling and generate the solid of revolution, at the bottom I think it's circular from the image you posted.

 

[Tristan]

Revolution!

 

[Zanna_Bianca_]

thank you all!!! In fact, yes, the revolution is the way, but it did not transform the curved line in polylinea, told me that it found 2 segments instead of 4 despite I had drawn under vegetable garden and it was all xy. But now he did.
already that you are, can you tell me something about the other problem I have, in the other topic I opened? ?