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Revolution surface is created by rotating a section around its axis to the specified angle in one direction or in both directions.
You can use the following objects as section of the revolution surface: face, sketch (sketch area), edge or 3D curve (including a contour plotted by a sketch, on a face, or arbitrary, i.e., with the type Contour on face, Sketch contour and Arbitrary, see section). Selecting a contour type).
When rotating a face, closed sketch (sketch area), closed Sketch contour or Contour on face, you can create a closed surface (see the picture).
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a) section (cylindrical face) and axis,
b) closed surface, c) open surface.
If the section is open, you cannot close the surface.
When rotating an edge or a 3D curve (including an Arbitrary type contour), the surface may not be closed. An example of rotating a spatial curve is shown in the figure.
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Revolution surface with spiral section
If the section is an open sketch or an open contour plotted by the sketch or on a planar face, and the axis of rotation is in the plane of section, then you can select the plotting type: toroid or spheroid, see the figure.
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Plotting a spheroid and a toroid (section – sketch – is highlighted using a thick line)
a) spheroid, b) toroid
See Also
