Measure the height of your ceiling. Cut two 2-inch-by-4-inch lengths of dimensional lumber 2 inches longer than the ceiling height measurement with a table saw or circular saw.
Cut two lengths of 2-inch-by-4-inch dimensional lumber 3 feet long. Find the center point of each of the 3-foot pieces of lumber.
Drive two 3-inch wood screws through the center point of the 3-foot pieces of lumber and into the ends of the longer lengths of dimension lumber. This creates two wooden T shapes.
Cut four lengths of 2-inch-by-4-inch dimensional lumber 2 feet long, creating supports for your ceiling lifts. Cut each end of the 2-foot pieces of lumber at 45-degree angles, creating a trapezoid shape.
Position two supports on each side of the longer length of lumber and beneath the 3-foot piece of lumber at a 45-degree angle. Attach the supports with 2-1/2-inch wood screws to each end of the 3-foot piece of lumber and to the sides of the longer length of lumber.