Three-dimensional printing Rapid prototyping 63 Manufacturing processes 58 Computer-aided design 35 Materials 28 CAD/CAM systems 27 Computer printers 25 Automation 24 Production engineering 24 Design, Industrial 20 Production control 14 Mechanical properties 12 Scanning systems 12 Additive manufacturing 10 Engineering design 10 Reverse engineering 10 Structural design 10 Extrusion process 8 Technological innovations 8 Solid freeform fabrication 7 Ion beam lithography 6 Polymers 6 Acrylonitrile 4 Aided design 4 Butadiene 4 Computer 4 Computer graphics 4 Design 4 Digital printing 4 Metal products 4