advanced YOYO

grabcad

This innovative hub-type yoyo employs gears to ensure only the central hub spins, preventing unstable angular momentum. The design is modified for titanium printing and suitable for thermoplastic Stratasys materials. Note that the printed model's coarseness might cause string friction; use a 100% polyester yoyo string. You can also choose to drill a guide hole in the central shaft, reinforcing or replacing it with a metal shaft secured by a washer and bolt on threaded ends.