Live Edge Graft Coffee Table with Brass Butterfly Key July 26, 2015 This table was sold, and will soon leave our workshop, but with these photos we can forever enjoy the beauty of the grain in this live edge Claro Walnut coffee table slab. Photos by Garrett Shannon. You can see in this photo the line of the grafted black walnut and english walnut trees. We added a polished brass butterfly key to stabilize the large crack in the surface. The Claro Walnut slab rests on our signature tea base, which makes the slab appear to float from certain angles.