This last week I had to troubleshoot interference issues with capacitance and the structure of the sculpture that serves as the antenna. The top of the sculpture had to be made of a different material than steel. So, a metal housing was built, removed and molded in many, many layers of silicone to create a detailed replica of the original. From there, the mold is removed in sections and then cast in solid urethane resin and reattached to the top of the hydrant guard sculpture. In the end, it will look little different than the original, but allow for less audio disruption. A lot of work.
I have also been collecting rocks from Randall's Island and molding them individually, these will be combined together to make a larger faux rock that will be a sculpture that covers the ground imbedded speakers.