First reprapped circuit
In case you don't know RepRap is short for Replicating Rapid-prototyper. It is the practical self-copying 3D printer shown on the right - a self-replicating machine. You can learn more about it here http://harkopen.com/projects/reprap
It looks a little bulky but hey .. it's a machine printing a circuit board with solder on it, you don't see that every day. Btw it's a opto endstop circuit. Congratulation to the RepRap team, and we dare to dream to Arduino printing :P
You can find more about this on their blog here : http://blog.reprap.org/2009/04/first-reprapped-circuit.html .