Sphere constructs a spherical surface around a center point and of the specified radius, or by using an existing circle as the “equator” of the sphere you want to construct. Spheres are exact surfaces, but contain seams and degenerate curves at their poles.
Follow these steps to make a sphere surface:
Depending on the construction method you use, you may need a circle of the correct diameter at the right location in the drawing to create a sphere.
Use the Surface wizard or select Sphere from the surface toolbar flyout.
Name the surface for future reference.
Pick a construction method:
Center and Radius method
Enter the coordinates for the center point, or click Pick to pick the point with the mouse.
Enter the radius of the circle.
Circle method
Select the circle (optional) from the drop down list that represents the circle’s maximum diameter. Or click Pick and pick the circle with the mouse.
Click Finish or OK to create the surface.
An example of a sphere surface.