Progress Report
Progress Report
04/07/2017: We brainstormed initial ideas for toy design with the constraints of 10 week schedule, student budget, and marketability. We created of the blog with sections for weekly reports, project overview, background/tutorials/FAQs, and Biographies. We also developed sketches for our initial ideas to get an understanding of how each project will look like and what are the components involved.
04/20/2017: We constructed rudimentary CAD model that will be improved on with physical experimentation. We came up with the initial hinge idea which would connect the four pieces of the seesaw. The strongest hinge will have to be the hinge at the middle as the majority of the weight will be focused on the middle. We also feel the addition of three hinges would add length to our seesaw while reducing the total weight. However, we are concerned that having three hinges could possibly weaken the structural integrity of the seesaw even if the additional hinges increases length and foldability.
04/07/2017: We brainstormed initial ideas for toy design with the constraints of 10 week schedule, student budget, and marketability. We created of the blog with sections for weekly reports, project overview, background/tutorials/FAQs, and Biographies. We also developed sketches for our initial ideas to get an understanding of how each project will look like and what are the components involved.
Description: 3D Tetris puzzle, would be fun, market for Tetris already exists. Tetris never gets old and would be a lasting toy. The pieces could be 3D printed and costs could be minimized. Possible challenges could be that the market is too competitive and that we might be delayed when we print due to the limited number of 3D Printers.
Description: Our project will consist of the designing and fabrication of a portable seesaw. This toy will comprise of wooden components that can be folded into bag-like structure through a system of hinges and will be light enough (less than 50 lbs) to be carried by parents. The fulcrum for the seesaw will be separate and attachable to the main body of the seesaw. Although the exact length of the seesaw is yet to be decided, the target age range for this toy is any children 12 and under.
Description: 3D Puzzle comprised of flat thin puzzle pieces, puzzle can be turned into a 3D pyramid, Additionally, the puzzle can be solved as a 2D puzzle and will display a map of Egypt. Possible challenges could that the toy does is not fun as we it is educational and that we might be delayed when we print due to limited number of 3D printers,
04/12/2017: We further brainstormed ideas for toy design and finally, came decided to go forward with out portable seesaw idea as it seemed to fit with out time constraint, student budgets, was innovative enough to have a substantial customer base. creation of detailed sketches. We developed more detailed sketches for our portable seesaw breaking down the design to its basic components.
04/18/2017: We discussed possible materials that could be used to maximize functionality as we wanted our design to be strong and durable yet at the same time be light enough to be carried by a parent. We also pondered how the fulcrum was going to look like and how would be attachable to the main, foldable body of the seesaw.
04/21/2017: We visualized our idea through KNEX to get an idea of how the Seesaw will work physically. As we are all novices at building simple machines such as a seesaw, we wanted to see what should be approximate length of the seesaw to support a certain weight. Additionally, we wanted to see what would be the proper ratio of length of seesaw to fulcrum height for the seesaw to be not too strained.
04/28/2017: We decided on the parts we wanted to purchase, keeping in mind a student budget while also trying to maximize quality. We purchased two aluminum pieces that are each three feet long as the main seesaw body. While we wanted to purchase more, we realized that the price of good quality aluminum was more than we had anticipated. Additionally, we were also worried about the weight of our portable seesaw becoming too heavy to carry. Thus we decided that 6 feet of aluminum would be enough as we could always increase the length with the number of hinges. Furthermore, we ordered four smaller pieces of aluminum that would be used for the base. We agreed to buy more than we needed for the base just to have extra metal that could be used for another part of the seesaw.
05/01/2017:
05/09/2017: 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.
05/19/2017: We finished the first of our seats and attached it to the main seesaw body. We did this through drilling holes using the drill press and screwing in smaller sized screws. Furthermore, we cut the legs of the base that will be foldable fulcrum. The legs were cut at an angle in order to ensure that the base will sit flat on any surface.
05/26/2017: We completed the second seat of our seesaw and attached it to your seesaw through drilled holes in the main seesaw body and small screws. We also drilled holes on the legs of the seesaw. These holes will line up with the main pin that hold the seesaw at 180 degrees. Furthermore, we added brackets to each set of two legs in order to ensure that the fulcrum will not collapse into its folded state once some weight is put on top of it.
05/30/2017: To strengthen our hinge which is the focal point of all the weight, we decided to epoxy it to further reinforce the strength and lifting capabilities of our seesaw. We brushed over areas that had joints between pieces of wood. We then let it dry to solidify the coating of the epoxy. The coating will also require sanding which will be done later as the epoxy needed time to dry fully.
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04/28/2017: We decided on the parts we wanted to purchase, keeping in mind a student budget while also trying to maximize quality. We purchased two aluminum pieces that are each three feet long as the main seesaw body. While we wanted to purchase more, we realized that the price of good quality aluminum was more than we had anticipated. Additionally, we were also worried about the weight of our portable seesaw becoming too heavy to carry. Thus we decided that 6 feet of aluminum would be enough as we could always increase the length with the number of hinges. Furthermore, we ordered four smaller pieces of aluminum that would be used for the base. We agreed to buy more than we needed for the base just to have extra metal that could be used for another part of the seesaw.
05/01/2017:
Description: This depicts the middle hinge design that allows the seesaw to fold. As one can see, the hinge will consists of two very thick wooden parts that will be connected through one main pin and two other side pins. The wooden pieces will have the necessary holes required for the pins to go through. The pins will be tightened through a bolt on the other side. The two side hinges will be tightened permanently while the main pin will have to be put in by the consumer. When the main pin is set, the seesaw will no longer fold and will function as a seesaw. When the main pin is taken out, the seesaw will fold into its compact form.
Description: This depicts a top view of our fulcrum design that is collapsible The design allows for an additional piece that is compact and easy to carry. It consists of two parts that will be attached through a pin system that will be connected to the pin system we implemented in our seesaw hinge. The two parts will link onto each other through additional pins which would prevent the fulcrum from collapsing on itself once significant weight is put on top of it. The two bases will have rubber attached to them to increase friction between the fulcrum and whatever surface it is resting on. The fulcrum will have angle pf about 40 degree when it is fully set up by the consumer.
05/09/2017: 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.
05/19/2017: We finished the first of our seats and attached it to the main seesaw body. We did this through drilling holes using the drill press and screwing in smaller sized screws. Furthermore, we cut the legs of the base that will be foldable fulcrum. The legs were cut at an angle in order to ensure that the base will sit flat on any surface.
05/26/2017: We completed the second seat of our seesaw and attached it to your seesaw through drilled holes in the main seesaw body and small screws. We also drilled holes on the legs of the seesaw. These holes will line up with the main pin that hold the seesaw at 180 degrees. Furthermore, we added brackets to each set of two legs in order to ensure that the fulcrum will not collapse into its folded state once some weight is put on top of it.
05/30/2017: To strengthen our hinge which is the focal point of all the weight, we decided to epoxy it to further reinforce the strength and lifting capabilities of our seesaw. We brushed over areas that had joints between pieces of wood. We then let it dry to solidify the coating of the epoxy. The coating will also require sanding which will be done later as the epoxy needed time to dry fully.
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