3d printable Robot arm See the hackaday project page https://hackaday.io/project/3800-3d-printable-robot-arm and http://www.chaozlabs.de/ for more infos.
Green is the current version (V4)
open Green/Inventor/Workspace/v4/RobotV4.iam
You can find infos about the gripper: http://www.thingiverse.com/thing:661286