Look at your computer setup and imagine that you hooked up a 3D printer. Instead of printing on bits of paper this 3D printer makes real, robust, mechanical parts. To give you an idea of how robust, think Lego bricks and you're in the right area. You could make lots of useful stuff, but interestingly you could also make most of the parts to make another 3D printer. That would be a machine that could copy itself.

RepRap is short for Replicating Rapid-prototyper. It is the practical self-copying 3D printer shown on the right - a self-replicating machine.

Structurée autour du Do it yourself (Faites le vous-mêmes !) et du Green design (cette conception écologique qui se veut soutenable dans sa nature même), la principale question posée au cours de Lift France 2009 fut de savoir jusqu’où les concepts couramment utilisés dans le monde du web (participation, open source, réplication infinie des informations, etc.) pouvaient quitter les écrans d’ordinateurs pour envahir le monde physique.