Creating a Surface on an Existing Surface

You can create a surface on a surface. The created surface will lie on the initial one.

Before you begin: Open a 3D shape containing a surface.
  1. Select a surface.
  2. From the Creation section of the action bar, click Geometry Extraction .
  3. Click on the surface, where you would like a corner of the new surface to be located.

    Press Ctrl while clicking to create the surface symmetrically in relation to the initial surface center.

  4. Drag to generate a rubberband matching the new surface.
  5. Click to terminate the surface creation.
    Notes:
    • As opposed to the creation of planar patches, you cannot define the surface orders (U and V) prior to or while creating the surface. The resulting surface orders are identical to those of the initial surface. However, these values can later be edited.
    • These surfaces, as any other surfaces, can be edited using the control points.
    • If you move the cursor to the edge of the initial surface, the new one will automatically snap on the initial boundary.
    • Similarly, you can create curves upon an already existing curve. Using Ctrl will then create a curve symmetrically in relation to the initial curve center.