1. Drop a sphere. I've included my settings in the image above.

2. Increase the Y-value to 9 (or half again your value).

3. Under the Utilities tab, select Taper, and then Taper from the drop down.

4. Press '+' twice.
5. Validate.

There's your egg.

Rendered in Bryce using some of my marble textures.

Tony

Back