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.
Use this handy reference to identify parameters for linkages to generate your desired form of coupler curve. Print a Motion uses the same parameters as the book, so once you have identified the motion you want you can come back here and print
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