Originally Posted by B47
Wonder if they're Engineering students?
Yes they are, as taken from the site link in the OP:
Spin Chill was created because warm beer sucks and waiting for one to cool down takes too long. We both have Mechanical Engineering backgrounds from the University of Florida. This summer, an accelerator program called HackerHouse took us to Atlanta to participate in the AngelHack hackathon. The night before in our hotel room, we impatiently spun our warm beer in ice to cool it as we had many times before. Being in an inventive mood, we wondered if we could make a device that would spin the beer for us.
The initial prototype was hacked together at the competition the next day from a power drill, a baby bottle, and a roll or two of duct tape (Picture shown below with newer Beerouette designs). It took second place. We refined the idea by 3D printing multiple iterations of the design. In order to improve the clipping mechanism we simplified the device and created the Chill Bit which incorporates the same clip, but uses a power drill to spin the beer. Chill Bits were made by overmolding liquid plastic onto metal drill bits using 3D printed molds.