[Christian Ristow] has created a much larger puppet that has caught the attention of Popular Mechanics. His Hand of Man is a 27 foot long remote control mechanical claw. Much of his time since then has been spent re-engineering and refining the design of the 27-foot-long hydraulically actuated appendage, exhibiting more and more capable crushers at a series of public venuesÂ. Ristow’s latest mechanical steel limb has 90-degree wrist rotation and improved mobility in the finger joints.
It is powered by a 90-hp Perkins 1104C-44T four-cylinder diesel engine and is controlled through a glove worn by the operator. The hydraulic system can be controlled by a glove worn by the operator. This started as a demonstration for a robotics fair, but has recently made appearances at Burning Man, Maker Faire, and had the Grand Champions seat of Popular Mechanic’s Backyard Geniuses Award.