3D printing: the future of mechanical prototyping
Print a Motion lets you rapidly define your mechanism and print a model. In a couple of minutes, you will have a 3D model of your specific four-bar linkage. You can then upload it to Shapeways to be 3D printed.
Your model will be printed as a single unit with no assembly required. It will move from the moment you open the shipping package. Any initial stiffness due to retained powder in the joints will rapidly dissipate with use.