Creates a donut-shaped object by extruding a circle along a circular path.
- Create the circular base by selecting the centerpoint and a point on the circumference. Or enter the base radius in the Inspector Bar. The circle is created on the current workplane.
- The default option is Center, which means the cross-section of the torus uses the base circle as its center. Click to define the tube size, or enter the tube radius in the Inspector Bar.
The torus is created, centered on the workplane.
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The Properties window of a torus contains a Torus page, in which you can set the geometric parameters. 
For TC Surface Options, see TC Surface Properties.
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Inner Radius: The base circle is the inner radius; the torus proceeds outward. 
Outer Radius: The base circle is the outer radius; the torus proceeds inward. 
