FSB Magazine) -- After midnight, it's dark and nearly silent in the Klock Werks Kustom Cycles shop (kustomcycles.com) in Mitchell, S.D. The only sound is the low hum emanating from a box that looks like a cross between a dormitory fridge and a Xerox machine. Behind a compartment of clear glass, the device - a Stratasys Prodigy 3-D printer - is constructing a complex shape, all curves and spaces, out of plastic. When he arrives at his shop in the morning, Brian Klock strolls over to the printer and pops open the glass compartment. Carefully breaking away the supports, he...