It's probably cheaper buying one, saying that, how will you fix it to the ground? If you bury them in concrete or just into the ground you'll need 4 @ 12' 2" X 4" UPRIGHTS to made an A frame 2 @ 3' 2" X 4" for the vertical brace to the A frame and 1 @ 9' 2" x 6" to take the swings for 2 swings...