EXTRUDE
Creates unique solid primitives by extruding existing two-dimensional
objects.
Specify:
1
Height of Extrusion
2 Extrusion taper angle <0.000000>
You can extrude polygons, circles, ellipses, closed splines, and regions.
The extrusion angle can be between –90 degrees and + 90 degrees.
See also REVOLVE.