Nagpur teenager creates world's tiniest robotic arm
Hiten Dharpure, a 17-year-old from Nagpur, India, has officially earned a Guinness World Record for developing the smallest robot arm, which stands at just 39.25 mm (1.54 inches). Even with its miniature scale, the device is capable of accurately grabbing and moving small items. Dharpure built the 3-axis robotic arm using FDM 3D printing methods.