Closing the volume

1. The model now has three outlets. The two outlets farthest from the origin of coordinates must be closed. The third will be connected to the rest of the piece when the T junction is imported.
2. Choose Geometry Create NURBS Surface By contour and select the two lines defining the outlet in the foreground of Figure 30. Press ESC. (See Figure 30)



Figure 30. Creating a NURBS Surface to close the outlet in the foreground

3. Choose Geometry Edit Hole NURBS surface. Select the NURBS surface just created. Then select the lines defining the hole. Press ESC. The result is shown in Figure 31.
4. Repeat the process for the other outlet to be closed.
5. From the Files menu, select Save in order to save the file. Enter a name for the file and click Save.