This photo shows the detail of the 3D CNC carving of the Great Seal of the US, before being painted. This is a 36 in round plaque wurh a 2 in relief (depth difference). These "off-the-shelf" CNC art files can be scaled to any size and relief depth, and the applique can be mounted on any wood, metal or HDU sign. These are quite inexpensive, priced at $65/ft2 to $75/ft2.