Bionic Handling Assistant - The Elephant's Trunk

Engineers at the bionic learning network in Germany have developed a robotic arm that is as flexible and strong as an elephant's trunk. The engineers wanted to imitate the softness of the trunk in their robotic arm, so they decided to use a light weight plastic called a polymide. They then had to work out how to make it more powerful by using compressed air rather than hard metal like steel or iron. To do thisthey used what was revolutionary technology at the time, and still is, if you ask me, a three d printer. Instead of the arm being a solid mass plastic, the engineers designed it to contain lots of hollow chambers stacked one on top of the other. This lighter