I finished the top off with 2x4's. Using a sureform to knock off the sharp edges made everything a little safer my our grandson as well as our own tender bottoms. A pipe clamp was used to hold the pieces together while I screwed them into place. A pipe clamp is really a necessary tool when using screws with roughcut lumber. Screws aren't strong enough to draw two pieces of wood together tight; you need to clamp them first. The staples were removed form the flaps of the plastic, the plastic folded up over the 2x4's and cut off under the outside lip.