Used openSCAD to cut the heart from the dragon model.
OpenSCAD didn't want to work with the full resolution version of the dragon so I trimmed it down a bit in meshlab. (dragon_lowres_ascii.stl) I used the heart thing http://www.thingiverse.com/thing:6190 to clip the heart from the original model. Then clipped the bottom of the heart so it could be used as the heart for the final print.
dragons-heart.stl | 2.8MB | |
dragon_lowres_ascii.stl | 3.6MB | |
heart-dragon.scad | 278.0B | |
heart.stl | 957.2KB | |
heartless-dragon.stl | 5.1MB |