To Freeze a Surface
1. Select one or more surfaces or components in the graphics window or on the Geometry and Topology Structure Tree.
2. Click Constrain > Freezing > Freeze. Alternatively, right-click and click Freeze. The selected surface is frozen and an icon is displayed on the surface to indicate that the surface is frozen. If you selected a component, all surfaces in the component are frozen.
The surface or surfaces are not completely frozen; the Repair tool may modify their boundaries to repair gaps.
One or more selected surfaces or surfaces of the selected component may already be frozen. In this case, only the non-frozen surfaces in the selection buffer are frozen.