Hallack created a labyrinth design that mimicked one from the Chartres Cathedral in Paris during the 12th century. The belief then was that walking through labyrinths would drive away evil thoughts. Starting with a stencil, Hallack traced lines on his slab, which was cast with an application of white color hardener. Then, using a die grinder with a 1½-inch-diameter diamond blade, he carefully cut the pattern of the labyrinth, which also included very small radiuses. He used black and turquoise chemical stains to provide the additional color.
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