To Sketch a Boundary Region
1. Set the enable_obsoleted_features configuration option to yes to make the Surface Free Form command available on the All Commands list.
2. Add the Surface Free Form command to the desired user-defined group on the ribbon.
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For information about customizing the ribbon, see the Related Links.
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3. Click Surface Free Form. The SURFACE: Free Form dialog box opens.
4. Select the sketching plane and specify model references. Sketch a circle or a rectangle.
5. The system displays a grid of red isolines in the first direction. Enter the number of control curves in the direction of the arrow.
6. The system displays another grid of isolines in the second direction. Enter the number of control curves in the direction of the arrow.
7. The Modify Surface dialog opens. You can select a point on the grid to drag, or optionally you can use the Modify Surface dialog box to define the Poly Motion region, turn on the dynamic diagnostics, or use sliders.
8. When finished tweaking, click OK in the Modify Surface dialog box.
9. Click OK in the dialog box to create the freeform feature.