MIT OpenCourseWare http://ocw.mit.edu 4.500 Introduction to Design Computing Fall 2008 For information about citing these materials or our Terms of Use, visit: http://ocw.mit.edu/terms.4.500 Digital FabricationDesign Tools Design by Physical Reasoning Generative Methods (Design Tools) Description Rapid Prototyping Description CNC FabricationDigital Printing = Digital Fabrication • Flexibility • Precision • RepetitionRapid Prototyping 3D PrintingRapid Prototyping 3D PrintingRapid Prototyping Laser CuttingMilling Dense Foam RoutingCNC Fabrication Wood RoutingA) 3D Printer -Metal -Plaster - Cornstarch -Ceramics z B) FDM - ABS Plastic - Rubber -Wax C) Stereo Lithography -Resin-3D Printer -Metal - Cornstarch -Plaster -Ceramics Build Slow Axis FeedOverflow Binder and Head Build Slow Axis Roller FeedOpen Spaces PlasterWax Plaster -Advantages -Speed -Self Supporting -Low Cost -Disadvantages -Low Strength -Required Post Processing[b] Strata SysTemperature Gauges Control Board Envelope Z Table Material Support Head EnvelopeHead Support Material Material Support Base zHeating Elements Tips Drive Wheels FilamentABS Material .010 ABS Support Base .010 -Advantages -Strong -Minimal Post Processing -Disadvantages - Slow - Porous - Hates Voids - High Cost to Operate[c] StereolithographyLaser Source Models Table Vatrts Minimal Post
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