Compass Yoyo

I worked with a team of 6 fellow students to produce the design and tooling for a yoyo assembly, delivering a run of 50 units. Using Solidworks and MasterCAM, we created CAD models, 2D drawings, and CNC g-code to make the tooling needed for our injection molding and thermoforming processes. We ran tooling trials on the lab’s injection molding machine to optimize molding parameters and minimize defects. After part production, we also established assembly line stations and SOP to streamline the assembly process.

For my role on the team, I:

Owned design and production of “snap ring” part. I worked on the design and tolerancing of a press-fit ring that holes the yoyo’s clear thermoformed dome to the main yoyo body. I performed tolerance analysis to gain confidence in the assembly. In creating the tooling, I designed the gate and runner system, CNCed the molds, and optimized injection molding parameters to minimize part-level defects.

Owned design of “compass” small parts. I designed the laser-cut compass face and compass needle, as well as a injection molded retaining cap for the compass needle.

Supported part production and assembly. During part production runs, my team worked together to have all hands on deck to support setting up the molding/thermoforming machines, loading insert-molded parts, de-gating, etc.