Feb 2014 – May 2014
I designed the Power Up Yoyo
with five other team members as part of a manufacturing class at MIT. The yoyo consisted of three main parts: an injection molded body, a thermoformed and injection molded face, and a circuit with LEDs. The circuit included two tilt-ball switches so the yoyo would only light up in rotation.
Along with another team member, I manufactured the injection molded piece of the face, which we sized to snap-fit into the body of the yoyo for easy assembly. Because injection molded parts experience shrinkage during cooling, my partner and I ran several experiments to determine the minimum cooling time necessary to retain the integrity of the face's design, as well as, its expected diameter shrinkage. Our data collection process ensured that we could consistently and efficiently reach the target dimensions of the face during mass production.
At the end of the semester, the team successfully manufactured 100 yo-yos under time pressure as part of our final deliverable.