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Rapid Design through Virtual and Physical Prototyping

  Carnegie Mellon University

Spring 2000

Sara Lechleitner

  Web Based Portfolio

In Class Activities

Exercises

Projects

  What I have done: What I have learned:
In Class Activities
  1. Toy Dissection
    1. Toy Dissection Results
    2. Toy Dissection Explanations

     

  2. Newspaper Structures - Design and Build Exercise







  3. Egg Drop Activity





    Egg Drop Results
  1. From the Toy Dissection, I became much more aware of the different materials that toys are made from.  I now look at objects and not only see their outer appearance, but look to see how they work.
  2. The Newspaper Construction was an interesting one because, although we had a good idea, it took us way too long to arrive at that conclusion.  Thus we ran out of time while trying to write down the directions for the other group that was to build the structure.  The team that tried to build ours had some difficulty with our directions and basically built our structure without regard to the instructions.  Let’s just say it didn’t fit our design intention at all.  Building the other group's structure was fairly easy, but it started to twist so we put guide wires on for support.  This project really showed me the importance of expressing your thoughts clearly on paper, especially when it comes to having someone else build something they have never seen before.  Also it shows me that I need to be more focused when I am working in a group situation and try to contribute more and keep the group moving forward. 
  3. The Egg Drop was an interesting activity since we were limited to the amount of materials we could purchase and the materials available.  We tried to go with an air bag approach (similar to those found in packing), but without the proper materials ours failed miserably.  Zip lock bags just don't hold air as well as those that are vacuum sealed.  The zip locks leaked air.  Some of the best designs can be seen on the Egg Drop Results link to the left. 
Exercises
  1. Exercise 1 – Role Mole

     

  2. Exercise 2 - Garfield

 

 

  1. The Role Mole exercise showed me that there is always more than one way to solve a problem.  I had several different ideas before settling on my final model.  I thought about a bow tie with glasses in it, but didn’t have the necessary material for it.  I was thinking about something attached to the wrist, but rejected that idea because it would have had to be big and bulky.  This exercise allowed me to be resourceful and creative.  I made a bag patterned after the “in” messenger bags like those at ebags.com.  The idea was that you could wear it like a bag but it would be out of your way and still easily accessible.  In my presentation of this idea, I also mentioned that if role mole had a cell phone, he could have an additional pocket added on later for that or any other small ideas he wanted with him on his date.   
  2. The Garfield Exercise showed me that what is being used in the market might not necessarily be the most efficient way to carry cans.  Several students in my class came up with designs that were just a strip or a single piece of cardboard.  I realized how important it can be to try and think outside of the box when trying to redesign some object.  
Projects
  1. Project 1 Toy Concepts
    1. Bottle Teaser
    2. Mission Possible Set
    3. Modified Pool

     

  2. Project 2 – Manufactured Assembly
    1. SDM report
    2. Handle


    3. Redesign Part Files

     

  3. Project 3 - Engineering Outreach Activity
    1. Our Proposal
    2. Our Updated Proposal
    3. Meeting of the Minds

 

  1. Project 1 allowed me to use some creativity and engineering to design three different toys for various ages.  Also, through this project I learned how to make web pages! From watching the video of my presentation, I realized that I needed to be more prepared and relaxed.  I tended to play with my hands, which can be distracting.  I also need to speak a little bit louder and slower.  When I get nervous, I tend to talk faster.
    1. The Bottle Teaser is a mind teaser that I saw at the Museum Store in Tower City (Cleveland, OH) when I was home over break.  This teaser makes you “think outside of the box.”
    2. My Mission Possible Set is based on the Science Olympiad Event that one of my friends in high school used to do.  It allows a child’s imagination and creativity to come out during playtime.
    3. The Modified Pool is just that – a version of pool for younger players who are don’t have the coordination to play with a pool stick yet.
  2. We are almost done with Project 2.  So far I have learned how difficult it is to even get 3 people together on a Saturday afternoon to meet.  I was one of three people in my class to redesign the parts in Iron Cad.  I spent about 10 hours drawing and resizing the parts.  Now, that those have been completed the next step is to send the part files (in the appropriate form) to the FDM machine.  I have yet to present for this project, but I am doing the next presentation so I should have more about what I learned then.
  3. We are now in the middle of Project 3.  Our group is having students make their own barometer to help them understand how pressure works and affects the environment that we live in.  We are trying to show them that by paying attention to the level in the barometer, they can predict the weather!