Here is a lengthy article describing the possibility of printers that will print circuits and even robots. Already printers are being used to create edible art, print synthetic skin, and now the possibility of creating polymers that can act like semiconducters and be printed. With the cost of 3D printers dropping like a rock, or even duplicating themselves, the reality of pressing "print" from your favorite robotics studio, and watching your latest creation be created in minutes is becoming more and more real. We already have the capabilities of printing batteries, RFID tags, and displays so, putting them all together isn’t far off.

I can’t wait for my $50 robot printer. But, then again, I might miss the machine shop.