DIY: Wing Back Chair

Choose an existing chair that has arms and a high, thick and strong back. If it is upholstered, then you will need fabric of the same material and color for the wings. The shape of the wings is a matter of taste, but try to avoid curves that are too complicated in order to reduce the difficulty in upholstering them. Half-inch to three-fourth inch thick boards should work well for your wings.

Make a rough full-size drawing, taking the measurements of the arm and the portion of the back which is above the arm. Measure the height of the wings (which can extend up to the arms). Using a pencil and ruler, draw the outline of the shape on one of the boards. The edge which will fit against the back leg should be straight. A bevel of 10 degrees at the top will look good. The front can be cut in a curve which is wide at the top and tapers gradually toward the base. All edges should be softened (you can use a D-103 cutter for the purpose), which not only provides for a nice finish, but also does away with interfering protrusions. Avoid wings that are too wide, as they may not make strong attachments to your chair.

Use a band saw to cut the board, being careful to make smooth curves. Use this board as a template to cut out the other board, so both wings are the same shape and size. Cut the fabric for upholstering, allowing a half-inch seam allowance for the for cotton batting. Apply glue on the boards and secure the cotton batting uniformly. Using a staple gun, fasten the fabric, stretching it so it remains taut.

Place the wing on the chair and ensure that it sits smugly on the edge of the back. Drill holes an inch apart along the length of the straight edge which will sit on the back leg. Using one-inch screws, secure the wing strongly to the chair back. Repeat for the other wing.