Then, cut a 45-degree bevel onto both ends of the shelf front and onto one end of each side piece. Glue and nail the three parts together. Next, cut two pieces of ¼-inch plywood to serve as the ...

We used a speed square to mark the 45-degree angles on each end of the 12-inch ... Make sure the shelf is pushed all the way back to the wall and then pre-drill four holes through the shelf ...