Is This Aluminum Masterpiece the Perfect Yo-Yo?
Using a computer-controlled lathe makes it easier to improve on the classic design.
For most people, a yo-yo is a child's toy. For a handful of people, it's a hobby that consumes years of their lives. If you need proof, watch yo-yo competitions. They can get pretty intense.
Most high-end yo-yos are built of aluminum, and the one by undergrad Darren Tan and Ph.D. student Roby Lynn is no exception. Theirs was precision-machined using a computer-controlled lathe for a highly precise balance and finish.