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This video shows how to create various basic shapes using the Shell Tool.
The first one is a Cone, for which we need to use the Revolved geometry method.
We draw a slanted line for the Profile Polygon, draw a vertical Revolution Axis from its top
point and set 360 degrees for Revolution Angle.
Then in 3D we can use the Free Rotate command to rotate it into an upright position.
The next is a pyramid. For this we can use the Cone we just created as a base.
Let us check the Segment Surface along Rotation checkbox for the Shell, choose the By circle
radio button and specify 4 for value. A Cone is segmented into a Pyramid shape.
The next one is a Sphere. Again, we use the Revolved geometry method. We create the Profile
Polygon which will be a half circle… then connect the two end points of the half circle
for the Revolution Axis, and set 360 degrees for the Revolution Angle.
In 3D we can again use the Free Rotate command to rotate it so its Profile Polygon and Revolution
Axis are in a more familiar, vertical plane. The last one is an ellipsoid. Again we are
using the Revolved geometry method.
We space-click on a half ellipse we have drawn to create the Profile Polygon, connect its
two end points for the Revolution Axis, then set 360 degrees for Revolution Angle.
Again we use the Free Rotate command to rotate it into an upright position.