The plywood is stained Baltic Birch with an exterior grade glue, the spacers are polypropylene. It is held together by three steel rods and is rotational because of the rubber dowels. The post-tension steel rods provide a camber for the center of the bench allowing it to rest on two ends. The birch and polypropylene pieces were transferred from baked grasshopper isocurves and points into masterCAM files where they were CNC routed with flip milling.