This is a set of scripts that uses Golly (see http://golly.sourceforge.net/), a cross-platform cellular automata engine, to create objects that represent the evolution of a pattern over several generations on the Z axis using the rules of Conway's Game of Life.
The scripts generate OpenSCAD (see http://www.openscad.org/) programs, which you can use to create STL files for printing.
The demo object represents eight generations of evolution of a glider.
Install Golly, and then install "golly script/openscad.py" in your Golly script directory and launch it directly from Golly. It will evolve the currently loaded pattern for the specified number of generations and create and OpenSCAD file representing the object.
There is also a script that will take the names of a series of .rle files as input, so you can manually save the various generations of a pattern from Golly and then run the "solid_conway.py" script on the lot.
The latest code is available on GitHub at https://github.com/phooky/SolidConway.