Flatten combines
            all layers and applies the sculpting information to the original
            base level for the mesh and then deletes the layers.
         
         
            - In the Layers window,
               ensure the display button is set to Sculpt.
            
 
            - In the Layers window,
               do either of the following:
               
                  - From the Layers window
                     menu ( 
 ), select Flatten.
                   
                  - Right-click in the Layers window
                     and select Flatten from the menu that appears.