the basic idea is to get your PVC, get your wood, screws, drills, and to make the rail shape with wood, and then take the PVC, drill through the top so theres a hole, put them up and down each PVC spaced pretty good distance and then drill down through the bottom of the PVC (bottom being the part of the PVC that is touching wood) and boom, your done. ive made cannons, 20 foot, 12 foot, 50 foot