The design cycle was utilized many times during the design and building process of my PBL project. For example, when we first chose our project idea (the Magnetic Launcher), we found that we did not have the materials that were shown online to build the project as it required metal tubes. Thus, we decided to gather more information on the characteristics of that part so we could possibly find an alternative for it. Through this research process, we found that the shape of the rails did not necessarily have to be cylindrical but could be a thin rectangular prism, which was more practical to find in our case. Furthermore, we also noticed that the original design required gold for its conductivity, but obviously our budget could not accommodate that kind of expense. As a result, we did some research regarding the conductivity of metals, and found that aluminum ranked 4th highest after gold. Therefore, we decided to purchase two aluminium rectangular prisms to substitute as the gold cylinders for the rails. Another example of us using the design process was the process of us trying to replace the spring loaded lever that we were unable to acquire. This was also partly the same issue we faced for the aluminium rails in my first example. The problem was that we needed a device to provide the initial velocity of the projectile so that it would not fuse to the rails. Thus, after our research, we considered a few ideas: 1. Flicking the projectile with fingers (too dangerous due to high voltages), 2. Shooting it with a rubber band (too inaccurate), and 3. Using a compressed air can to blow at the projectile. Ultimately, at the end, we chose to use the compressed air can because: 1. It was accurate, 2. Non-dangerous, 3. Very powerful, and 4. It is what real magnetic launchers use.