3D printing — LLMpedia

3D printing
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Name	3D printing

Contents

3D printing is an additive manufacturing technique that fabricates three-dimensional objects by depositing successive layers of material guided by digital models. It intersects with developments in Charles Hull, Stereolithography, Fused deposition modeling, Selective laser sintering, and institutions such as MIT, ETH Zurich, University of Sheffield, and Fraunhofer Society. Emerging from collaborations among researchers at Bell Labs, General Electric, NASA, DARPA, and U.S. Air Force Research Laboratory, the method has influenced fields ranging from Harvard University biofabrication to Siemens industrial production.

History

The lineage of additive techniques traces to early experiments at Battelle Memorial Institute, University of Texas, 3D Systems Corporation, and inventors like Chuck Hull and S. Scott Crump, whose patents followed innovations at Kodak-linked labs and private firms such as Stratasys and Materialise NV. Milestones include demonstrations at Eidgenössische Technische Hochschule Zürich where stereolithography concepts matured alongside laser sintering work at Dynamism-era firms and academic groups at Carnegie Mellon University. Government-sponsored projects at Defense Advanced Research Projects Agency and aerospace efforts by Boeing and Lockheed Martin accelerated adoption, while standards initiatives emerged from ASTM International, ISO, and trade organizations like Additive Manufacturing Users Group. The 2000s saw desktop proliferation with companies like RepRap projects, MakerBot Industries, and hobbyist communities at Hackaday, paralleled by corporate R&D at General Electric and medical innovations at Mayo Clinic and Cleveland Clinic.

Core processes include Stereolithography (SLA), Fused deposition modeling (FDM), Selective laser sintering (SLS), Direct metal laser sintering (DMLS), Electron beam melting (EBM), Binder jetting, and Material jetting. Systems integrate hardware from vendors such as Stratasys, EOS GmbH, 3D Systems Corporation, and HP Inc. with software platforms developed at Autodesk, Siemens PLM Software, Dassault Systèmes, and open projects like RepRap. Workflows rely on file formats and standards from ISO/ASTM 52900 and mesh preparation tools informed by research at Sandia National Laboratories, Oak Ridge National Laboratory, and Lawrence Livermore National Laboratory. Post-processing steps connect to heat treatment expertise at ArcelorMittal, surface finishing methods used by GE Additive, and metrology practices established by NIST.

Materials span polymers, metals, ceramics, and biological media, supplied by firms such as BASF, Evonik Industries, 3M, Heraeus and research entities at University of California, Berkeley and Imperial College London. Polymers include thermoplastics like PLA and ABS developed with input from DuPont and Ticona, engineering resins refined by Formlabs, and photopolymers used in Stereolithography. Metals encompass titanium alloys preferred in Rolls-Royce and GE Aviation turbomachinery, nickel superalloys used by Pratt & Whitney and Honeywell, stainless steels common in Siemens production, and aluminum alloys applied by NASA. Ceramics and glass formulations derive from research at Corning Incorporated and University of Tokyo, while bioprinting inks and scaffolds have been advanced at Massachusetts General Hospital, Wyss Institute, and Johns Hopkins University.

Adoption spans aerospace, automotive, medical, architecture, consumer products, and education, with projects at NASA Johnson Space Center, European Space Agency, Airbus, Boeing, Ford Motor Company, General Motors, Bosch, and BMW. In medicine, surgical planning and implants involve Mayo Clinic, Cleveland Clinic, Johns Hopkins Hospital, and regulatory engagement with U.S. Food and Drug Administration. Construction efforts feature collaborations with ICON, Skanska, and architectural studios linked to Zaha Hadid Architects and BIG (Bjarke Ingels Group). Cultural and artistic works have been produced with support from Smithsonian Institution, Tate Modern, and museums like Louvre Museum. Education and research deployment occur at MIT Media Lab, Stanford University, Caltech, and Princeton University.

Advantages emphasized by proponents at McKinsey & Company, World Economic Forum, and OECD include design freedom championed by Isambard Kingdom Brunel-inspired innovators, reduced part consolidation noted by General Electric, and supply-chain implications studied at Harvard Business School. Limitations highlighted in analyses from European Commission, United Nations Industrial Development Organization, and laboratories at Argonne National Laboratory include material property anisotropy, surface finish constraints addressed by Renishaw, speed and scale issues tackled by Siemens and HP Inc., and intellectual property considerations debated in courts like United States Court of Appeals for the Federal Circuit.

Economic assessments by Goldman Sachs, Morgan Stanley, and World Bank evaluate additive manufacturing’s effects on reshoring activities investigated by U.S. International Trade Commission and workforce transformations discussed at International Labour Organization. Environmental reviews by Intergovernmental Panel on Climate Change-informed researchers, lifecycle analyses at EPA, and sustainability projects with Ellen MacArthur Foundation examine energy intensity, material recyclability promoted by Veolia, and waste reduction strategies implemented by Siemens and BASF. Policymaking interfaces involve agencies like European Commission industrial policy units and national innovation programs at National Science Foundation and UK Research and Innovation.