Anticipating Problems and Creating Solutions

4)    Designing Your Mechanism: Anticipating Problems and Creating Solutions


  • Cost
  • Materials
  • Tools
  • Constructing
  • Aesthetics
  • Durability
  • Functionality
  • Difficulty
  • Market
  • Adaptability


  • Cost: The cost can be somewhat of an issue. While building the product if it costs more than selling it I am loosing money. Therefore this product has to be more expensive but not too expensive so people won’t buy it. I have to try and save money while building this product.
  • Materials: The main problem for this product is finding the correct springs for the doorstop. These are required to it perfectly and push against the door. Other materials may be hard to get such as a bolt. I need to find the exact size bolt for the eccentric cam.
  • Tools: The tools may be an issue because of finding a drill. I will have to get a powerful drill that can cut through metal to make the eccentrical cam. This may be hard to come by.
  • Constructing: The constructing of this product may be difficult. I will have to build eccentrical cams and incorporate them into my product. This may be difficult because I have to measure out each distance and where to drill a hole.
  • Aesthetics: While building my product I have to make sure it looks good. It will be challenging to hide the hot glue, sand the edges nicely, and make the product look good overall. I will have to paint the product nicely to make it look more aesthetically pleasing.
  • Durability: The product will have to be very sturdy and strong. It has to withstand wind so the rubber feet cannot fall off. The springs will have to be secured tightly so they do not come off.
  • Functionality: The machine has to work and function properly. While operating with the feet it has to be able to move. It also must stay underneath the door. The eccentric cams have to be able to push the springs down.
  • Difficulty: It may be difficult to put together also to use. It has to be able to hold the door.
  • Market: The difficulty is if the product will sell. It has to look nice and function correctly to have a market. This means it has to be built very carefully.
  • Adaptability: The problem is if the doorstop will work in any door. Some doors are farther off the ground while others are extremely close, I will have to find the happy medium.


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