EXTRUDE

Creates unique solid primitives by extruding existing two-dimensional objects.

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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 ?0 degrees and + 90 degrees.

See also REVOLVE.