This is the home of the "lego felt tip 110". A fully working lego printer with driver for Mac OSX. Many people have asked for documentation, source code, instructions etc, so here it is.
If you're wanting to make your own lego printer be aware that most of what I have done could be much more easily achieved with a lego mindstorms kit. If however like me, you like making things from scratch for the shear hell of it, read on.
Original video if you don't know what I'm talking about...