I made The Conundrum out of 12 interlocking pieces each made from a single metal including brass, copper, aluminum, steel, and stainless steel. The 12th piece, completely hidden inside, is a one inch cube of solid SILVER BULLION. Each piece of this sculpture is a unique geometric form with a wonderfully smooth feel. I display the sculpture on my desk .... unassembled ..... because it's such an intriguing conversation piece. Each piece is meticulously finished and tested for a smooth sliding interlocking fit, and individually hand sanded to secure a smooth finish. Selected pieces are given a patina, creating contrast within the sculpture through added color. The finished work has an incredible "fit and feel." When fully assembled, The Conundrum forms a beautiful three inch solid cube weighing over 8 pounds!