When connecting the pipes you will have the inner wall of the pipe above, go inside the pipe below. The outer wall will go over the outer wall of the pipe below. To connect them, begin doing so at an angle. This will allow you to see where the walls are. As you twist, bring the pipe above from the tilted position to a vertical position twisting as you do so. Connect them as much as possible by hand. To complete the connection by placing some wood as protection on the bottom and top of the pipes and taping the top with a hammer and with