Step 4. Attach the Bench Seat
Flip over the bench assembly so the dividers and ends are pointing upward. Position the seat board on top so the dividers are on their layout lines and all edges are flush. Drill pilot holes and secure each divider and end with three 1 1/2” wood screws.
Tip: Depending on what type of screw you're using, pilot holes should be just slightly smaller than the screw. The idea is to allow the hole to be big enough for the screw to pass through without splitting the wood, but at the same time, small enough so that the threads grip firmly.