Assembling the Main Frame and Seat Slats

What happens here

With the two side frames now fully assembled, the next step is to connect them to form the main structural body of the chair. This is achieved by attaching front and back horizontal rails between the two side frames. Apply outdoor-grade wood glue to the ends of these rails and to the mating surfaces on the side frames, then secure them firmly with outdoor-grade screws. Ensure that the entire assembly remains square and level during this process. Once the main box-like structure is sturdy, proceed to install the seat support slats. These slats are typically secured across the front and back horizontal rails. Space them appropriately to provide solid support for the seat cushion while also allowing for drainage in outdoor conditions. Use wood glue and screws for each slat to ensure maximum strength and stability.

Goal: Create the complete chair frame and install the supportive seat slats.