About this 3D model

This is a robotic gripper used to move a plastic frog from a train to a catapult in Froggy World. Froggy World is an amusement park for adventurous plastic frogs. The gripper uses coffee inside a balloon. Placing a vacuum on the balloon causes it to "grab" the object--releasing the vacuum releases the object. Video at: http://youtu.be/uHAmEzcGuUY Full instructions at: http://www.instructables.com/id/Froggy-World-5-The-Coffee-Gripper/