US Custom House Hall Slide Show Click on an image to start the slide show and learn more about this project. Before restoration: Water damaged cornice.Before restoration: Water damaged cornice.Close up of water damage showing failure of previous repairs.Custom molding knife made from original pattern.Preparing the surface to receive new plaster by scoring in mechanical keys and adding stainless steel screws for extra support.Preparing the surface to receive new plaster by scoring in mechanical keys and adding stainless steel screws for extra support.Getting ready to run the molding. The base coat plaster has been applied and the knife is in position. This profile took about one dozen runs to complete the cornice, applying a layer of new plaster between each run.Running the molding.Showing the completed cornice with the new plaster blended to the old.The new molding is complete. Showing the transition between old and new plaster.Showing the completed cornice with the new plaster blended to the old.Showing the completed cornice with the new plaster blended to the old.Recreating the faux granite blocks.Completed faux granite blocks.Plaster restoration complete.