Ed Davidson (A.K.A. YoYoSpin) lives and works in Colorado Springs, Colorado. A former US Marine/Force Recon, Ed retired in 1996 from 25 years of engineering and program management with Texas Instruments and SAIC, with the aim of pursuing his life-long ambition of becoming a professional lathe artist. Ed's specialty is turning one-piece yo-yos and "Terror Tops" from exotic woods and plastics. He collaborated with Frank Difeo when Frank began making his first collector's yo-yos, creating custom boxes for yo-yos such as the Dif-e-Yo Daizzy-Fly.