3D printing on a flexible substrate… Now where have I seen someone do that before.?. 
http://spectrum.ieee.org/automaton/robotics/robotics-hardware/this-crawling-inchworm-robot-can-be-printed-out-and-folds-itself
3D printing on a flexible substrate… Now where have I seen someone do that before.?.
http://spectrum.ieee.org/automaton/robotics/robotics-hardware/this-crawling-inchworm-robot-can-be-printed-out-and-folds-itself