How to Build a Half-Moon Wall

Determine the dimensions of the half-moon wall. You need to determine the outer radius, which represents the outside of the wall frame, and the inner radius, which is the inside of the wall frame. This type of wall can be used to make a small, partially concealed storage space or to hide wires and cables for a home theater system. As such, a half-moon wall can be as small as 4 feet wide.

Locate the center of the long sides of two 1/2-inch-thick 4-by-8-foot plywood sections, using a measuring tape. Finding the center of the long sides provides a convenient pivot point for using a string as a compass to draw the curve of the wall. Stack the two plywood sections and align the edges -- this allows you to cut through both sections at once, instead of having to cut each section separately. Mark the center with a pencil and drive a 3-inch nail through the mark with a hammer. The nail serves as a pivot point for using a string as a compass.

Measure a section of string 8 inches longer than the outer radius of the half-moon wall. Tie one end of the string around the nail. Tie the string around a pencil so that the distance between the nail and the pencil is equal to the outer radius of the wall. Using the string as a compass, draw a semicircle on the plywood.

Tie the string around the pencil so that the distance between the nail and the pencil is 4 inches shorter than the outer radius of the wall. Draw another semicircle on the plywood.

Tighten C-clamps around the inside perimeter of the plywood sections. Cut along the semicircles with a jigsaw to fabricate what will serve as the top and bottom plates of the half-moon wall.

Determine the height of the half-moon wall. Using a circular saw, cut 2-by-4-inch lumber sections 1 inch shorter than the height of the finished wall to form the studs. You need one stud for each end and one for each 8 inches of wall length.

Have one partner hold each of the plate sections. Place one stud between the plates at each end. Drill pilot holes through the plates into the ends of the studs. Insert and tighten 4-inch wood screws through the pilot holes with an electric screwdriver.

Place studs at 8-inch intervals between the end studs. Drill pilot holes through the plates into the ends of the studs and secure them with 4-inch wood screws.

Stand the moon wall frame in place on the subfloor. Drill pilot holes through the bottom and top plate into the subfloor and ceiling between each stud. Secure the wall to the floor and ceiling with 4-inch wood screws.

Stand a 1/4-inch-thick 4-by-8-foot drywall sheet on its long end, so that it is horizontal, at one end of the half-moon wall. Secure the sheet to the end stud with 3-inch drywall screws. Cut a 4-foot section of 2-by-4-inch lumber with a circular saw and nail it to the drywall and the end stud.

Dampen the drywall sheet with a spray bottle filled with water and wait for about 10 minutes to allow the water to penetrate the drywall. The drywall does not have to be saturated -- only dampened. Press the drywall until it meets the next stud and attach the drywall to the stud with 3-inch drywall screws. Continue this process until you have attached the drywall to each stud. Add additional drywall sheets to cover the wall in the same manner, cutting the sheets as needed with a drywall saw.

Tape the seams with drywall tape and use a putty knife to cover the tape and screw heads with drywall compound. Sand the compound with a hand sander and paint the half-moon wall as desired.