
Create the curves needed to define the surface. These curves are typically at the edges of the adjacent surfaces.

On the geometric construction ribbon, click More in the Geometric Construction box.
The Select Geometric Construction dialog box displays.

Select SurfByBlending and click OK.

Select the first curve.

Select the surface adjacent to the curve.

Select the second curve.

Select the surface adjacent to the second curve.

Continue select curves and surfaces, up to five pairs, until a closed contour of curves is formed.
A preview of the surface displays.

Click Continue.
Temporary geometry displays in the graphic view and as SurfByBlending in the Geometric Construction Explorer.

If needed, create additional geometric constructions.

Click Close to return to the main command ribbon.

If you stop the command before clicking Finish, the software does not save the geometric constructions to the model. When you restart the command, the following message displays, giving you the option to recover the geometric constructions:
"The previous execution of the command was not completed. Do you want to recover the 3D construction?"
The message displays only during creation of an object and is unavailable when editing an object.

The geometric constructions are not saved to the model until you click Finish on the main command ribbon to create the model object.