The first part of the prototyping included creating the shape for each piece of the layered acrylic. This was done using solidworks. I did not want the the sleeve to be a simple circle, so I created divots around the circle. It was an iterative process to get the correct size for the inner and outer circles, as I wanted the sleeve to go up to a certain height on the cup. After a couple iterations, the perfect size was determined to be an inner diameter of 3.1 inches with and outer diameter of 3.39 inches. A screenshot of the shape used for laser cutting can be found below, as well as one of the laser cut layers of acrylic.
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