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3D Design Project

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Michael S

on 6 December 2012

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Transcript of 3D Design Project

Michael Shiozaki Developing a New Chair for Young Students Investigation Phase Design Phase Planning Phase Create Phase ` - Materials and Connectors
- Currently used furniture in classes
- Human factors, including: ergonomics, anthropometrics, safety, comfort and useability
- How much it will cost to produce and distribute your product You Must Research I intend to create a classroom
chair that is ergonomic and
aesthetically pleasing to younger
children. Create a Design Brief 1. The design must be ergonomically correct
2. The design must be aesthetically pleasing to children (design is intended for children, not adults)
3. The design must have at least 3 different colours
4. The design must be made up of at least 2 materials
5. The design must be sized for small children
6. The design must be light enough for small children to carry
7. The design should have something that is both cosmetic and functional.
8. Prototype should be made out of cardboard and
hopefully wood pieces if available. Why you should design a new piece of furniture
How you plan to test your prototype
How human factors apply to your design
The product life cycle and how it will affect your designing Explain ` - Cardboard
- Metal pipes
- Wood
- Plastic
- Springs
- Interlocking metal pieces
- Hinges
- Pipes with holes for adjustable heights Possible Materials and Connections Wood Materials Comparison - Clamps
- Screws
- Nuts and bolts
- Interlocking parts
- Glue
- Tape
- Nails
- Elastics Pros
- cheaper than metal
- can be very light
- Organic

Cons
- Possible splinter (safety issue)
- May break over time Metal Pros
- Stronger than wood
- Almost no chance of breaking

Cons
- Expensive
- Heavy
- Harder to manipulate
- Can warp when exposed to extreme heat Nuts & Bolts Connectors Comparison Glue Pros:
- Solid connection
- Won't break
- Looks professional
- Can be taken apart and put
back together easily

Cons:
- Expensive
- Can be heavy Design Specifications 1. The design must be ergonomic
2. The design must be aesthetically pleasing to children (design is intended for children, not adults)
3. The design must have at least 3 different colours
4. The design must be made up of at least 2 materials
5. The design must be sized for small children
6. The design must be light enough for small children to carry
7. The design should have something that is both cosmetic and functional. Also Available in: To Do List Investigation
Create a design brief and specifications
Create questions to ask LE students
Design an orthographic drawing to take notes Create materials and connectors listResearch approximate cost of production and distribution
Planning
Create Gantt chart
Create to-do list of detailed steps
Design
Develop 3 designs
Make sure the 3 designs incorporate all design specifications
Present designs to group Create
Gather materials
Measure and cut all building materials to sizes that are in ratio with Sketchup model measurements

Evaluation
Create a daily log outlining work done
Create a full process reflection outlining:
Work completed
Problems and resolutions Pros
- Solid connection most
of the time
- Cheap

Cons:
- Connection is permanent, possible damage if forcibly removed,
- Set glue can seep through cracks
- Very sticky, may leave residue marks Why Design a New Chair? - Current chairs may be uncomfortable for students
- There are now 3 grades per class, meaning there will be a large size difference and one size does not fit all. Especially with chairs
- Same colour per chair may look good because everything matches but it is dull to look at
- Children may want a change in their classroom environment, maybe they want more colours, maybe they want more abstract shapes in their surroundings Approximate Cost of Distribution Materials: Plastic molded seat, metal pipe legs, glider tips, screws
Fabrication Process: about 2 to 3 weeks
Delivery Process: 24 hours $3.50
Price by Height: 14” $21.88, 16” $23.88, 18” $24.88
https://www.schooloutfitters.com/catalog/product_family_info/cPath/CAT2_CAT26/pfam_id/PFAM2691?envmkt=Img1 Possible Questions for LE Students Would you like different coloured chairs?
Do you find the current furniture comfortable? Why or why not?
Do you find the current furniture too big? Is the desk too large? Is the chair too small? Would you prefer it if you could change the size of the furniture?
Would you prefer to be able to select what type of furniture you sit on? Such as stools, chairs or benches? Human Factor Definitions Ergonomics: is the study of making workspaces or a work environment more comfortable. Making something ergonomic means it is made to lessen the impact of extensive use on the body. For example; an ergonomic keyboard may have depressions for the wrists to prevent wrist pain from extensive use.
Anthropometrics: is the study of the human body, its abilities and its properties. An example of this could include a person in a wheelchair. Anthropometry studies the reaching abilities of a person in the wheelchair, their maneuvering and other equipment use.
Safety: is being protected from danger or risk. It means steps are taking to prevent injury or malfunctions, tests are run to make sure everything works so that you are not injured or hurt in any way. An example of this is a car. Car crashes can be fatal, so car companies put their cars through extensive testing so that when you are involved in an accident, systems deploy so that you are not severely injured.
Comfort: is the state of relaxing without any physical pain or pressure. Comfort has many different levels, with each person having their own unique view of what comfort is to them. An example of this is a leather couch. Some people may find it very comfortable, some people may find it somewhat comfortable, some people may not find it comfortable, but the manufacturers include various paddings that allow it to be as comfortable as possible to the user.
Ease of use: is the ability of a person to use an item without having to go through extensive instruction or assembly. Also known as usability, it is how easy it is to learn how to use something. How we Plan to Test our Prototype Ask LE students to sit in the chair
Ask if they like the chair
Ask if they could work in this chair
Ask if they think I should change something
Ask the students if they could tip the chair over
Ask LE students what they think of the chair
Ask if they think the chair looks nice
Ask if they would like circles or squares painted on the chairs
Ask if the chair should be a different colour
Visual
Take photographs or video of the students using the chair and their reactions
Observations
Note the students' reactions to the chair and if there are any consistent reactions between students Product Life Cycle Product Life Cycle Define Product Life Cycle
The product life cycle is a cycle showing the various stages of the life of a product, from its raw material collection to its disposal. The product life cycle will show the collection of raw materials, the product’s manufacturing, its assembly, transportation, sale and use and finally its disposal.

- The collection of raw materials usually happens in mines, oil fields or farms. This is the stage where the raw material is withdrawn from its source and then shipped off to places where the material is extracted or refined
- The manufacturing and assembly process is where all the extracted and refined raw materials go. All the pieces needed for the finished product are constructed and then the final product is assembled
- The finished products are then shipped out by truck or boat to its retailer. The retailer then sells the products to consumers. The consumers then use the finished product.
- The disposal of the final product will hopefully be recycling instead of dumping the materials in a landfill Why I Chose my Final Design I chose design 1 as my final design because I believe it is the most basic out of the 3 designs. It was generic, basic looking and I think it will be very easy to build. The multiple colour option also gives a degree of variety that is restricted in the other 2 designs. Also, this design almost fully matches my design specifications although some rules had to be bent and I believe it is a very versatile design. Several improvements will be made for the final design to make it match my specifications more and to be more ergonomic. The design must be ergonomic
The design is ergomnomic because of the curve from the seat to the back. Although there could be more ergonomic curves, it is ergonomic enough to not cause any prolonging injuries or problems.
The design must be aesthetically pleasing to children (design is intended for children, not adults)
This design is very aesthetically pleasing to children because of the solid, one-colour design. Each chair is a single colour, but the entire chair is the one colour so they look a lot more colourful to the children.
The design must have at least 3 different colours
This design does not have 3 different colours per chair,
but to make up for it, the chair comes in a variety of colours The design must be made up of at least 2 materials
This design is made up of metal and plastic, so it is made up of 2 different materials.
The design must be sized for small children
This chair is small, although I believe the seat is a little large for small children. The seat is about 10" off the ground so I believe that part is sized well but the seat and back need to be shrunk down.
The design must be light enough for small children to carry
This design will be light enough for small children to carry because plastic is not very heavy and metal only makes up the chair legs.
The design should have something that is both cosmetic and functional.
The chair itself is both cosmetic and functional. The entire chair is one solid colour, so it is cosmetic as well as functional. The design must be ergonomic
This design is ergonomic because the seat and back are 1 piece, with an ergonomic curve. The seat also has a curve in the middle, making it more ergonomic when you sit in it.
The design must be aesthetically pleasing to children (design is intended for children, not adults)
This design is aesthetically pleasing because of its smooth design. Children may also be fascinated by the curves, thinking the chair looks cool.
The design must have at least 3 different colours
My design does not have 3 different colours because it is primarily made out of wood. I did not want to colour the wood because I think the chair looks better with its natural colour.
The design must be made up of at least 2 materials
This design is made up of 2 materials: wood and metal pipes.
The design must be sized for small children
I believe this design is sized for small children because it is not a very big design. The chair is 16” long, so I believe it is fit for children.
The design must be light enough for small children to carry
This design should be light enough for children to carry because it won’t be extremely thick wood. Thick wood can be extremely heavy so this wood will be thin and if necessary, hollow.
The design should have something that is both cosmetic and functional.
The 1 piece seat is both cosmetic and functional. It gives a very aesthetically appealing factor to the entire chair, with smooth curves and a solid shape. Design 2 Design 1 The design must be ergonomic
This design is ergonomic because of thes pace between the seat and back. This means no curve is necessary between the back and the seat.
The design must be aesthetically pleasing to children (design is intended for children, not adults)
The design is aesthetically pleasing to both children and adults because of the generic design, the solid shape and the design’s simplicity.
The design must have at least 3 different colours
There are 2 different colours, the natural wood colour and the colour of the metal pipes. I would not add a third colour to this design because it would look inconsistent.
The design must be made up of at least 2 materials
This design is created out of 2 different materials, wood and metal pipes. I did not use plastic here because for a chair like this because I think wood would look much better in this design. The design must be sized for small children
The seat of this design is 10” wide and long, so I believe this design is sized for small children. The back is about 10” too, so I believe this design is well sized for younger children.
The design must be light enough for small children to carry
The wood is not very thick, so I believe this design is very light.
The design should have something that is both cosmetic and functional.
There is nothing both cosmetic and functional about this design unless you count the seat, which is smooth wood. Design 3 Problem: http://en.wikipedia.org/wiki/File:Hexagon_nuts.jpg Investigate Current
Chairs used in Classrooms https://www.schooloutfitters.com/catalog/product_family_info/cPath/CAT2_CAT26/pfam_id/PFAM2691?envmkt=Img1 https://www.schooloutfitters.com/catalog/product_family_info/cPath/CAT2_CAT26/pfam_id/PFAM22052 Similarities Between the Chairs - All chairs are blue
- All have a basic construction: plastic seats and metal pipe legs
- All have curved seats
- All are held together by a few metal bolts and screws
- All have some kind of slit in the plastic seat
- All are priced under $50
- 3 out of the 4 chairs have seats that are 1 piece
- All have a circular element to the design of the seat Conclusions drawn from Research of Current Classroom Chairs - Standard colour for classroom chairs is blue
- Cheap plastic is molded into ergonomic shapes
- provides a cost-efficient form of producing ergonomically correct chair seats
- Curved shapes are much more ergonomically correct than squares or rectangles
- These chairs need to be cheap to produce in large numbers, so plastic that is less than 1/2 an inch thick is used
- Chairs are designed with extra support under the seat
- Chairs not always designed for comfort, more so to develop good posture
- If a chair is going to do well in the market, should be priced anywhere between $20-$40
- Putting openings or slits in the seat may reduce production costs of plastic Narrowing Down Materials No springs because they may cause injuries and are not safe in chairs (having a bouncy chair on springs is not a good idea for a classroom setting)
No hinges because they are expensive, may break from continuous stress and may cause injuries
No clamps because they may cause injuries if closed on small fingers
No elastics because they are too bendy and flexible to build a strong, stable chair
No nails because they are only usable in wood, and if they are too long may cause scratches and other injuries
Glue, tape and cardboard will only be used when building the prototype, not the actual design. https://www.schooloutfitters.com/catalog/product_family_info/cPath/CAT2_CAT26/pfam_id/PFAM2698 https://www.schooloutfitters.com/catalog/product_family_info/cPath/CAT2_CAT26/pfam_id/PFAM2698 Remaining Possible Materials - Cardboard
- Wood
- Metal Pipes
- Plastic
- Interlocking Metal Pieces
- Pipes with holes to adjust
- Screws
- Nuts and Bolts
- Interlocking parts Create Design Specifications Front chair leg: 19.5 inches
Space between front chair legs(ends): 18 inches
Back chair leg: 20.7 inches
Space between back chair legs (ends): 19 inches
Space between front and back chair legs (ends): 21 inches
Length between front and back chair legs (top): 7.5 inches
Diameter of chair legs: 1 inch
Circumference of chair leg: 3.75 inches
Width of seat of chair: 16 inches
Length of chair from top to seat: 14.1 inches
Height of the hole in the back of the chair: 7.5 inches
Width of the hole in the back of the chair: 6.5 inches
Height of chair: 30.5 inches
Length of seat: 14.8 inches
Length of space from top of chair to edge of seat: 24 inches
Thickness of chair at front of chair: 1 inch
Thickness of chair at back of chair: 1.75 inches
Steel bracket under chair: 5.2 inches Measurements of Chairs in
Tech Class First Attempt at Making a Chair in Sketchup Vs Vs http://ergonomics.about.com/od/ergonomicbasics/a/ergo101.htm http://www.udeworld.com/anthropometrics.html How Human Factors Affect My Design http://en.wikipedia.org/wiki/Safety http://dictionary.reference.com/browse/safety?s=t&ld=1093 http://dictionary.reference.com/browse/comfort?s=t&ld=1093 http://en.wikipedia.org/wiki/Comfort http://en.wikipedia.org/wiki/Usability Ergonomics is an important factor in the design of my chair because this chair must be ergonomic, comfortable and it must promote good posture. Comfort is somewhat important because even though the children may use the chair for an extended period of time, ergonomics and posture must be considered. This may make the chair uncomfortable to some because they have bad posture, but good posture is something that should be trained from a young age. Child anthropometrics are very important because without them, the chair would not be sized for young children. My chair must also have nothing that is too complicated for younger children to understand, such as multiple adjusting knobs. Ease of use is considered when making the chair as simple as possible to use for younger children who do not have extensive knowledge or are capable of using complex machines. Phase 1 Building of the seat and curves Top View of the Seat Side View Side View Bottom View Phase 2 Addition of back and smooth
full-length cardboard layer Back View Front View Side View Phase 3 Experimentation in legs, adding of wood legs and cosmetic duct tape Phase 3 cont. Destruction of the Legs and modifications Final Prototype Cardboard Legs Cutting the Wood One Leg Nearly Done Completed First Duct Tape Layer Aftermath of Me Dropping the Chair Aftermath of Test Morgan The beginning of our create phase involved a lot of extra planning. We ended up creating something new, not something that matched any of our designs, and we made a lot of changes throughout the create phase. We started construction without a solid, planned out design in mind and decided that we will just see how it goes and develop plans as we create.

The prototype was a result of experimentation as well as lack of planning. We had the advantage of pre-made double corrugated cardboard, so we had very strong cardboard. During the first class of construction, we had to create a corrugated seat, using 2 flat pieces of cardboard and a couple strips of cardboard that were bent, creating a sandwich. We spent half the class cutting, and then were able to glue the entire piece together very fast, and we still had a fair amount of time in class left. We decided that the piece we created would be the seat of our chair, instead of creating another one next class, because we considered it a waste of a class of experimenting with our cardboard. We spent the remainder of the class measuring and cutting out cardboard strips that we would use to covers the sides so the seat would have 6 sides instead of 2. After this class, it became apparent we would have to cover everything with duct tape or paint because we would lose craftsmanship marks for the amount of glue and bad cardboard cuts. We eventually went with duct tape, coloured blue because from my research, blue seemed to be the dominant colour of classroom chairs.

We spent the next couple classes talking to Mr. Sweetman and debating over how we would add a back and legs. Mr. Sweetman recommended we add curves to the front to make it more ergonomically correct for children sitting in the chair. That way there wouldn’t be a sharp edge; there would be a curve instead. We spent 1½ classes talking to Mr. Sweetman about what we would do, as well as talking with each other and then half of a class we spent cutting out the curved shapes. We managed to cut out and glue on 3 of the shapes and had to do the rest the next class, which we also spent debating on how we would attach a back to the chair. This was the end of phase 1 of our construction.



Phase 2 began with us cutting out long, curved shapes from cardboard. We decided to create a back the same way we had made a curve on the front of our seat. We cut out 5 long pieces and glued them down, noting that they were not all even and then proceeded to try and even them out as much as possible. Looking back on it, we should have refined the curves a bit to make it more ergonomically correct because someone leaning back in the chair has their back curve over the chair, so we probably could have changed that to having a depression in the middle of the chair so someone would be more comfortable and it would promote better posture.
We decided we needed some extra time outside of class so we went in after school for a couple days and added the layer of cardboard that covered the front curves and the back. We glued the entire sheet down, and it made the prototype look much better because it covered much of our gluing and other craftsmanship issues. One thing we did note after we had glued the sheet down was that 2 of the curved pieces that created the back did not have full contact with the sheet used to cover the entire chair. We did attempt to fix this in the future but our attempts were futile. This was the end of phase 2 of construction.
Phase 3 began with the construction of our legs. We spent a lot of time debating how exactly we would create our legs and talked to Mr. Sweetman about it as well. We originally planned to use 2 long cardboard 90 degree angle pieces and glue them together with a cardboard strip diagonally inside as our legs, but then we eventually went with one cardboard piece and the strip to create a triangle after consulting Mr. Sweetman. Unfortunately, the cutting of the triangular legs didn’t go well, and we were forced to switch materials due to the cutting problems we had. We switched our leg material to wood and made indicators before hand on how we would cut them so we wouldn’t screw up the way we did with the cardboard legs. We spent the next class cutting the legs, which took a lot of time, and then wrapped them in duct tape and attached them. We realized afterwards that the duct tape had no functional purpose on the wood because the wood was solid. Our original intention was for the duct to wrap around the cardboard as added reinforcement to hold the whole structure together. We kept the tape on the wood, mainly because of uniform colour. We attached the legs, but unfortunately we spread it out so they all aimed out instead of being parallel to each other. This was supposed to be the end of phase 3 of construction and our chair would’ve been finished, except that Morgan then sat on the chair and broke off 2 of the legs. I ended up dropping the chair after it hit a table and broke off the other 2, but the reason they broke was the cardboard. The paper layer on the outside of the cardboard tore from the stress from the legs being pushed apart. Mr. Sweetman then recommended we cut our legs down a bit because our chair was a little tall for younger children so we cut each leg down by 3 inches. We re-glued the legs on, this time making the legs parallel, which reduced the stability of tipping the chair over sideways but it was the only way to prevent the legs from breaking off again. A couple classes later, we decided that we needed some extra reinforcement of the legs so we added strips of duct tape between the legs to hold them together through tension and prevent them from pushing apart from each other, so we added several bands of tape between the legs about 2 inches off the ground. Next class, Mr. Sweetman recommended we change the tape to cardboard and place it higher up to reduce damage. The tape was not always in tension so it didn’t look very good and it was low towards the ground, and children’s’ feet would probably step on the tape and wreck it so we created 4 cardboard strips, glued them into 2 thick pieces then glued them just under the seat to 2 legs each, going lengthwise. I finished off all the duct tape coverings and we ended up with our final product. This ended the third and final phase of construction. As we built our chair, there were 2 things that were absolutely necessary to us. One was that the chair had to be stable and strong. We really wanted to do well on the prototype so we worked as much as we could on creating a strong design. The chair seat and back looks rather bulky but in the end, I highly doubt that either will break, which means we achieved our goal there. The one main weak point we have in our chair is the legs being attached to the bottom of the chair. There is a chance the cardboard may rip again, but we added a lot of duct tape that was attached to the bottom of the seat, as well as the cardboard strips that will hold the legs together through tension so hopefully nothing will go wrong. Our second important thing was that we had to have good craftsmanship or cover it all up. Unfortunately, our good craftsmanship goal ended rather quickly, because as we built the seat, we noticed strips that were glued onto the sides to make a rectangular box were not wide enough to cover the entire opening, so we used duct tape to cove the entire chair and hide all the deformities in our design. The duct tape also added to the overall strength and integrity of the design, so that was an added bonus on top of the cosmetic factor of the duct tape. In the end, we did make some pretty bad decisions, such as making the legs all spread out without anything to reinforce them, so the chair’s weight went straight down the middle and pushed all the legs out, but we did manage to create a really good chair and I think it will do well in the testing phase.

A major problem that we had during the create phase was that we didn’t really know what we were trying to create. We had a rough idea about what our idea needed to include but we didn’t have an image or model to build on. Also, we probably reinforced the seat and back a little too much, and didn’t think much about how we were going to attach the legs to our seat. We figured we would just glue them onto the bottom and we would be fine. Well, as that turned out, it didn’t go very well. I had thought that facing the legs away from each other would achieve better stability, and it would have if the legs were held to the seat better, but unfortunately we forgot about the way cardboard is constructed and as a result; the legs broke off, ripping off a piece of the cardboard with it. Thinking back on it, if we had something connecting the legs underneath, that break may not have happened because if we had something in the middle supporting everything then the legs would not have collapsed in that direction.

Overall, we completed a lot of work in a short period of time, finishing our prototype fairly fast although the after-school sessions we went to as a group to work on our prototype may have contributed to that. We tried to make best use of our time, working efficiently and splitting up tasks so that we both worked on separate tasks that eventually fed into something we both needed each other to help with, such as the actual construction of the seat where I cut out the corrugation pieces and Michael Bian cut out the large pieces. We then had to both work on the construction of our seat. We both put a lot of work into the project and he did a lot of the construction while I created the Sketchup model. Phase 3 Phase 2 Phase 1 Evaluate Phase Library Testing Phase Overall, I thought we had a decent amount of success in the creation and testing of our final product until the last day when the LE students came to the Elgin Mills Campus. We did succeed in several of our goals, such as using the colour to attract the attention of the students but we did not consider the side-to-side movement of the chair, and as a result the legs of the chairs broke. Out of the 10 children that came, 3 said their favourite chair was ours, so our chair would attract about 10-12 kids per class. One factor that may have contributed was the design of the back. The shape looked rather awkward for a human back although you don’t actually know how it feels until you try it, but unfortunately the shape may have caused most of the kids to shun the prototype. Throughout our testing and construction, the only 2 failures we had was when Morgan used the chair and due to bad design the center of gravity caused the legs to give way, and the day the LE students came and broke the chair’s front legs. We did learn that if we had some small beams running between the front legs we would have been fine because it would have held everything together. If you rate the success of our prototype from the results of our tests, we completely failed. Our chair broke in both tests although after the first test it held up very well class after class with someone sitting in it but unfortunately our goal was to make a stable chair, and one of the LE students showed us exactly how our chair wasn’t stable. After the first failure, we placed tape bands to hold the legs together through tension but then we removed it and placed 2 cardboard strips attached to the 2 legs lengthwise. This solved the problem of the legs spreading forwards and backwards and we thought that because they were held together that way they wouldn’t spread outwards. The chair ended up collapsing when the LE student rocked side to side in the chair and the front legs ended up bending sideways before breaking off. Personally, I think that would have destroyed every other chair on display but unfortunately our chair was the only one where this weakness was pointed out. Regular classroom chairs have solid metal tubes as their legs so they do not succumb to the breaking of the legs from side to side movement.
We knew that the legs were the weakest part of the chair after we completed the cardboard layer that covered the entire seat. The seat and back were completely solid, but we ran out of spots to place the legs, resulting in a very weak attachment. We had originally planned for the legs to be attached up the sides of the seat but the angle that we wanted for the legs prevented that. We didn’t put a whole lot of thought into the legs and that was the part we needed to think of the most. Our prototype would work fine as a car seat but it’s a chair, and chairs need legs so our design has a primary weak point. During the investigate phase, I feel that I did not go in-depth as much as I usually do. I ended up scoring a 4 on my investigation, then went back and started adding on more research of chairs currently used in classrooms. I noted all similarities and drew conclusions from the chairs so I could factor those similarities into my designs. I then narrowed down the list of materials I had and gave reasons why I eliminated several materials then gave a list of the remaining possible materials. I also added on a paragraph explaining how the human factors we had to research affected my design. Looking back at this, I was missing a lot of things but in the end I did manage to get the 6 on the rubric. During my planning phase, I wasn’t so sure about what was supposed to go on the checklist. The Gantt chart was pretty straightforward because I do one for every project, so it was a simple repeat of what I usually do. The checklist was new this time, and I had absolutely no idea what to put on it or how detailed it was supposed to be. I simply listed as many things that I could think of to do throughout this project, but I didn’t go into enough detail. I ended up getting a 4 out of 6 on the planning phase and I am going to achieve that 6 by adding more detail to my Gantt chart, such as talking about when something happened. I felt that throughout the design phase I was fairly behind. I spent 2 classes getting one design together because I kept scrapping the designs I had because I wasn’t happy with them. I feel I did succeed in matching my design specifications with all 3 designs and I was happy with all my designs because I think they worked out very well. Along with each orthographic of each design, I also had all the specifications on the side and a short sentence under each one that said why it did or did not match my specifications. I also talked about why I chose my final design and overall, I was pretty happy with my performance in this phase because I feel I put a lot of work into it and came up with 3 designs that I was happy with, which doesn’t normally happen.
The create phase was where I felt I worked the most efficiently. Michael Bian and I worked very efficiently even though we were delayed from constructing for a couple classes because we had to decide on how to approach our situation and what exactly we should do to design a very strong seat. We were slightly behind but we made up for it by using our test cardboard corrugation piece as our seat. It was rather thick but we moved fast and after brainstorming managed to get our seat put together in just over a week. I also managed to get the Sketchup put together in 1 weekend after we had finished the final prototype. I feel I did a lot of work with Michael Bian and we worked very efficiently together. The evaluate phase took very little time and I feel I did a lot of work in a very short period of time. I completed it within 3 days although technically the evaluate phase spanned the entire project because I did a process reflection throughout the project. My process reflection isn’t really descriptive or detailed. Every class I wrote 1 or 2 points about what had happened in class and what I completed, so it wasn’t as detailed as my normal process reflections but I plan on expanding that. Overall, I worked very efficiently and wrote down the key points for my process reflection. There were several improvements that could have been made. Throughout all the phases, I should have re-read the rubric again several times instead of once to make sure I remembered everything. In the investigate phase, I should have known that I needed to put more information and go into much more detail on chairs and materials. For my design phase, I feel that I could have reflected more on my designs and evaluated each of them, giving my thoughts and what I thought I could improve. In the create phase, I think we should have spent much more time considering the legs instead of the actual seat. The seat was a very solid final product but it was useless without the legs, which is something we should have worked on more and considered in our brainstorming sessions. Throughout the evaluate phase, I probably should have wrote much more for my process reflections than I actually did. I only wrote 2 sentences per day, which didn’t go into much detail; I only gave a brief summary on the events of the day. I believe our final product would have a large impact on society because it is something that is designed by students. The final product would also help promote good posture because it forces the lower back to be straight, with the body bending slightly backwards instead of a student slouching forwards. Our prototype chair could even be built with cardboard, reducing the cost of having to purchase metal or plastic parts. This would help the environment because the parts don’t all have to be manufactured and won’t cost as much as the production of plastic or metal. Group vs Individual Work
I believe that I worked a lot more efficiently as a group. A lot more work got done when we split the work and we worked efficiently by splitting tasks according to strengths and we were able to do separate tasks and then meet up in the end to work together on the end result. As an individual, I did achieve a lot. I did do a ton of work by myself and did quite a bit of research and drawing. I successfully completed the investigate, plan, design and evaluate phase individually and continuously reflected. I felt that we got a lot of information from watching the LE students test and react to our chair. The main piece of information we got that day was that our chair was unstable sideways, as we found out after a student broke our chair by rocking side to side. We noticed that some students were attracted to the chair, which may have been because of the chair colour and neatness of the design. Some children didn’t use our chair at all. I believe a reason for this was the way the back of the chair looked. It honestly doesn’t look like a proper angle for the back to be in, with the top about 2 inches back from the bottom with a large curve in between. Now although this promotes good posture, it doesn’t seem that way because to most people, the chair looks like something that someone can break their back over. We did get a lot of happy reactions from the children and a lot of them said they would use this chair in class. I thought it was a very productive test because we did get a lot of feedback from the children and we learned about a weakness that no one saw before.
At the beginning of the project, I spent the first couple classes practicing with Sketchup, trying new techniques shown in class and practiced creating chair models along with Mr. Sweetman. I then proceeded with my investigate phase, creating questions for LE students, researching materials and then chose a category of furniture to create. I chose to create a chair so I did a little extra research in different chairs. I then completed an orthographic model of a simple chair in preparation for visiting the Bayview campus. Unfortunately, I missed the trip to the Bayview campus because I was at a cross-country meet that day, so I was not able to collect data from the LE students, which put me at a slight disadvantage because I did not know what the students wanted going into the create phase. I was offered a secondary option for missing the trip. Instead of using measurements from their chairs I took measurements of my desk chair at home, which gave me some information but I still didn’t have the correct measurements. On October 3rd, I started sketching out some preliminary designs, but the following class we learned more about the product life cycle, then I did a quick little reflection about how the product life cycle will affect my design then started working on my Prezi. I don’t remember exactly when I learned about Prezi, probably the first or second class but I decided to use it for this project and I’ve done quite a bit on it. Process Reflection We were given 3 work periods after the product life cycle; one period per design. My first design consisted of solid-colour chairs, which I was fairly happy with but the design didn’t look right, but I kept it anyway. My 2nd design was a really strange shape. I wanted to make it hollow, so nothing was inside of it and the shape turned out well. I thought the design seemed to be ergonomic but if I created it, the design may have not been as ergonomic as I thought. Design number 3 was much simpler than the other 2, using a much more basic, straight design that follows the style of older office chairs. Afterwards, I worked on comparing my designs to my design specifications to finish up the design phase. I also worked on my Gantt chart and to-do checklist, taking 1 class to complete my planning phase.

I was paired with Michael Bian for the create phase and we spent the first 2 classes brainstorming possible ideas. We then created a test piece of corrugation cardboard that was about 2.5” thick, although the piece we created was rather large. We decided that we would use our test piece as the actual seat, because we used up a lot of cardboard and the piece we created was incredibly strong, so we brainstormed how we would be able to attach a back and curve for the legs onto it. We used flat rib pieces and glued them all down, then placed a cardboard layer over everything and glued it down. I then proceeded to wrap the entire chair in layers of duct tape to help with structural integrity. We originally tried to make legs out of cardboard but when we didn’t cut right, we made the legs out of wood, then glued them heavily down to the bottom of the chair but unfortunately, we found out that the connection wasn’t as good as we thought and the legs all broke off because the glue tore off a layer of cardboard instead of the glue coming apart. We then changed the positioning of the legs and attached the legs together with some bands of duct tape, hoping tension would hold the legs together and prevent the legs from spreading out. After consulting Mr. Sweetman, we switched the tape out for 2 parallel cardboard strips that were glued to the top, although the strips only went lengthwise, we had no strips going across the width of the chair, which may have resulted in the destruction of our chair. My evaluate phase was the longest phase of the project, spanning the entire project due to the process reflection. I was able to complete it rather quickly despite the large number of projects that were due around the same time. I worked very efficiently, reflecting on the process and ending in good detail and got my entire project in on time.
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