Marks are transferred from a story pole to lay out the upper mantel on the wall above the fireplace.
After the plywood is attached to the wall for the overmantel field, layers of ornament create a frame around the perimeter of the field.
U-shaped pilasters are glued and pocket screwed together on site. Here a decorative corbel is screwed to the top of the pilaster.
After a layer of decorative crown is applied, the top of the mantel shelf slides into place as the top layer.
Pilasters smaller than the ones below the mantel are fabricated with molding made to look like fluted columns.