A redesign of this thing http://www.thingiverse.com/thing:253934, Geared Heart Version 2 is a simpler mechanical design and uses the dual color extrusion capabilities of the Ultimaker 3. The base consists of two components; "Base.stl" and "Gear Heart Bottom.stl", that are joined together using Cura in order to allow for dual extrusion. And as was in the original design, you'll need to download, print and assemble Emmet's 2-3 gears onto "Heart Center.stl" as per the original design instructions. Video of prototype is here: https://www.youtube.com/watch?v=cwbgl-woX0U. Designed using Fusion 360, sliced using Cura, and printed on an Ultimaker 3 Extended.