This is a two color octopus model for dual extrusion 3d-printing. It was generated through a simulation of reaction diffusion on a mesh.
We wanted to play around with using dual extrusion on our Replicator 1 printer to create textured 3D models. We're making an app that takes any 3D model and simulates reaction-diffusion on its surface to yield a 2-color 3D printable model composed of two STL's.
The octopus shown in the photo was printed on a Replicator 1 at full size (5in across) with .27mm layer height.