05/12/2017

05/12/2017: We finished the main body of seesaw. We had some initial trouble with lining up the hole in the hinge with the hole in the aluminum bar. We had to fill the old holes in the wood and create new holes for the aluminum bars. After drilling the hole for the main pin , we spend a significant amount of time in trying to sand inside of the hole so the main pin could be slid in and out very easily.Additionally, we sanded each half of the hinge thoroughly to make it smooth tough to touch. Per each half of the seesaw, we added two bolts with the nuts tightened on one side.  The hinge is 11 feet and 3/4 inch while the slots that hold the bar in place is 4feet and 3/8 inch on each side. For strength improvement, we have decided to coat the hinge with epoxy. Furthermore, we plan on adding one more bolt on each half of the hinge along that will be connected through a bracket for each half of the hinge. We will add this reinforcement to both the right and left side of the hinge.