Secure the Routed Composite Top Rail

What happens here

Position the routed composite top rail onto the metal railing, ensuring the routed channels align perfectly with the brackets, allowing the board to sit flush. Use a large clamp (e.g., a bar clamp or F-clamp) to press the composite board firmly down onto the metal railing, ensuring a tight fit. Drive two-inch screws (or appropriate length to prevent piercing the top surface) from the underside of the metal top rail into the composite board. This method conceals the fasteners, maintaining a clean aesthetic.

Goal: Fasten the routed composite top rail to the metal railing structure to create a stable and decorative surface.