Replacing Surface 

The Replace command lets you replace sketches, faces, planes and surfaces by other appropriate elements.

This task shows you how to replace a surface used for creating geometry with another surface. 

The operating mode described here is valid for replacing the geometrical elements used in the definition of any Part Design features.
Open the Replace.CATPart document.

  1. Select Extrude.1, that is the red surface used for trimming both the pocket and the hole.

  2. Right-click and select Replace....
    The Replace dialog box is displayed, indicating the name of the surface to be replaced.

  3. Select Extrusion 2 as the replacing surface.
    Extrusion 2     now appears in the With field of the dialog box.

  4. Check the Delete replaced elements and exclusive parents option to delete Extrusion1.

  5. Click OK to confirm the operation.
    The pocket and the hole are now trimmed by Extrusion 2. Extrusion 1 has been deleted.

For more information about Replace... command, refer to About Replacing Features.