Place two 1-inch-by-12-inch pieces of wood on the ground. Measure and cut each to 3 feet in length.
Place a tape measure at the end of one of the boards in the center. Measure 12 inches from the end. Draw a short line to mark this place on the wood.
Place a drill bit at the marked spot and drill a hole. Make sure the hole is large enough that a jigsaw blade will fit into it.
Draw a rectangle that is 1 inch wide and 4 1/4 inches long around the hole using a tape measure. Place a jigsaw into the hole and cut the rectangle out of the board. Set the board aside.
Place a tape measure at the end of the second board in the center, and measure 12 inches from the edge. Draw a line at this length to mark the spot.
Place the end of a tape measure on the line that was drawn. Measure 2 1/8 inches to the right, which should be to the edge of the board. Draw a straight line using a straight edge. Repeat the steps to create a line on the left side of the center mark.
Draw a line lengthwise from the center mark down to the opposite end of the board. This line will complete the rectangle shape on the right side. Repeat the steps on the left side to complete the rectangle. Cut out each of the rectangles using a jigsaw, forming a "T" with the second board.
Sand both of the boards with fine-grit sandpaper. Remove any rough edges with the sandpaper to create a smooth surface.
Apply a coat of varnish or paint to the two boards. Cover the entire board, including the sides. Wait at least 24 hours to make sure the boards are dried completely.
Insert the T-shape of the second board through the slot created in the first board. The long portion of the T-shaped board will serve as the lounge chair's leg while the top part of the "T" will serve as the seat.