First Round of Manufacturing

The team has successfully machined the first three sets of molds and injection molded parts from each! Additionally, we received our bearings and O-rings from McMaster and learned to cut down shoulder bolts to the proper length using the lathe. For the body part, we were able to really focus on the parameters of molding to optimize the generated part, and ultimately created about 25 parts. For the next mold, we will need to decrease the size of the hole for the shoulder bolt/axle, increase the OD of the bearing slot slightly (right now the fit is too snug, preventing proper spin), and potentially increase the height of the press fit lip, as it turned our smaller than we thought. Overall, this part is looking good and just needs a few dimensional adjustments. For the white keys/snap ring, the part gets stuck in the cavity and needs to be pried out, so we will need to improve the mold design and runner system to prevent this. For the black keys, there was a symmetry problem in the mold, resulting in the gate being blocked by the core, so no part is actually created. With a few changes to mold design, we should be able to get a better idea of the snap fits and how these completed parts will look. Overall, the yo-yo parts also seems pretty light, so we may need to incorporate mass internally to improve function. Through this first round of manufacturing, we have improved the team skillset in Fusion, using the HAAS machine, using the injection molding machines, etc., and we aim for rapid iteration of each component based on our learnings for each to generate a new round of parts in this upcoming week. A few key photos of our first round of parts can be found below.