This is the yoyo I worked on with my team in 2.008, Design and Manufacturing II. We designed a Yo-Yo for manufacturing, then produced 50 exact models for inspection using Injection Molding and Thermoforming techniques.
After creating our design, we used Fusion360 to create CAM of the molds we would need to injection mold our parts. We CNC milled our molds from aluminum on a HASS VF-OE.
Based on the results of the first IM runs, we had to iterate our design and recreate these mold (sometimes more than once).
The 'Body Base' had a nut insert molded inside it to hold the Yo-Yo together!
Towards the end of the class, we had to create a Manufacturing Review, covering the manufacturability and DFM of our Yo-Yo. One part of the presentation that I'm particularly proud of involved creating a quantitative plan to produce a million Yo-Yos in the lab we were working in, with no additional capital expenses for equipment. By getting creative with multi-cavity molding and pushing the machines production bays to their limits, I was able to create a theoretical plan to produce 1 million Yo-Yos in a year, using minimal equipment.
All in all, this was a great experience that taught me a lot about manufacturing, teamwork, and the difficulties of mass production.