Makezine.com has a nice write-up on Pat Delaney and building tools from junk.
Here is the MultiMachine link, on opensourcemachinetools.org.
The Concrete Lathe.
There are several other projects and lots of interesting links and information if you poke around a little.
Of course, it is meant for less developed areas, but we always appreciate the artistry of ingenuity. It might even be a good thing to store away on paper or in a Faraday cage for Leibowitz.