3d printing patents

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3D Printing: Engineers, Designers, and everyday consumers are using this new fabrication process to conceptualize and create things that were once impossible. But what does this mean for the future of manufacturing and where do these 3D prints fall on the thin line between copyright infringement and fair use? 

Is it possible that 3D printing will do for objects what MP3s did for music; by once again radically transforming the way we look at copyright?