Menu
: SURFACECommand
: Design:RotateShortcut
: NoneThis command creates a surface by rotating the first projection curve in the target element around an axis.
A parameter box appears requesting the axis of rotation, which can be either the horizontal or the vertical axis of the projection curve. The axis of rotation can also be chosen to pass through the projection curve's origin or through the projection curve's fix point.
If the element does not contain a section curve set, the command will create a surface with a circular cross-section. If the element does contain a section curve set, a so-called free-form rotation is produced in which all of the surface's cross-sectional curves will be the same shape as the 2D-section curve. Lengthwise shapes will obey the given projection curve shape. Only one cross-section curve can be used at a time.
The projection curve and the section curve must both be smooth curves, or both linear polylines. In other words, a B-spline projection can be rotated around a Bézier section curve and vice versa, but not around a polyline.
If both the projection and section curves are polylines then the resulatnt surface will be facetted.
Some further instructions of creating rotational surfaces are: