I had NO idea DIY rapid prototypers had gotten this far: RepRap — RepRap is short for Replicating Rapid-prototyper. It is a practical self-copying 3D printer…The RepRap build cost will be less than $400 US for the bought-in materials, all of which have been selected to be as widely available everywhere in the world as possible. We hope to announce self-replication in 2008.

Yowza. We are close. This I have to try.