S14E4: Custom Running Shoes, Axes, Racing Karts, Animatronics

Measurements of a runner’s feet and movement are used to create individually fitted shoes, with custom-shaped components joined to supportive uppers and soles. Axe heads are forged, heat-treated, sharpened and mounted on handles; racing karts are assembled around welded chassis and compact engines; and animatronic characters combine sculpted outer forms with internal mechanical and electronic systems.