taxonomy input vs output devices additive vs subtractive processes structural vs functional materials analog vs digital parts, positions external vs self/coded/algorithmic assembly feedback vs feed-forward design vs goals subtractive CAMM Modela ShopBot Haas Harrison Epilog Universal Beam MultiCam Resonetics Omax ... additive Stratasys 3D Systems Z-Corp EOS Desktop Factory APS ... scanning Konica Minolta Zeiss SkyScan ... CAD/CAM/CAE/FEA/... Rhino SolidWorks CATIA Pro/ENGINEER FeatureCAM COMSOL ANSYS Cadence/OrCAD Altium Eagle ... micro/nano Adrian Bowyer (Rep-Rap) Hod Lipson (Fab@Home) Ilan Moyer assignment individual rapid-prototyping machine proposals - what process(es) will it use? - what will (and won't) it be able to do? - what are the benefits (and disadvantages) over current practice? - what are the system components? - which parts exist, and which will require development? - what will the workflow be from design to output? - how much will it cost? - how fast will it be? - what consumables will it need?