Put on a pair of work gloves, safety glasses and a dust mask to protect your skin, eyes and lungs.
Draw your L-bracket design on the piece of oak wood. Sketch the body of the bracket to resemble a boomerang — similar to a pressed L-shape metal bracket design. Draw a 5-inch by 5-inch, right-angle letter "L" shape as the outside edge of the bracket. Draw a 3-inch-deep curve for the body of the bracket.
Cut out the bracket using a coping saw. Smooth the bracket with 120-grit sandpaper.
Drill two evenly spaced 3/8-inch holes through the front, shorter end of the vertical portion of the L-bracket's body. The two holes allow for the bracket to mount with 3/8-inch bolts or screws. Repeat Steps 2 to 4 to create a second wooden L-bracket.