Measure the height of the ceiling with a measuring tape. Write down this measurement.
Determine how long the 2 by 4 needs to be cut. The cross beam (the lift will essentially be a T shape) at the top should be about three feet long. The other 2-by-4 board should be the ceiling measurement minus one inch for the cross beam. The finished lift height should be about one inch taller than your ceiling measurement. Mark the measurements on the boards.
Set the boards on the miter saw and cut them to size.
Line up the longest board so that the end is in the center of three foot board. Have a partner hold the two boards in place.
Drill pilot holes for the screws in the boards. The holes should go through the top surface of the three foot board and down into the end of the longer board.
Screw the two boards together with screws and a screwdriver.
Use the finished T-shaped apparatus to help you lift drywall sheets into place.