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L20%20-%20Rapid%20prototyping - Rapid Prototyping GE101...

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Rapid Prototyping GE101 Engineering Graphics and Design
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Overview Automatic, additive fabrication of physical  objects  1980’s CAD solid or surface model (fully  enclosed volume)  Horizontal cross sections 
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Uses Design evaluation Function verification Aid to creation of models for other  manufacturing processes (tooling) Construction quality models in small  numbers
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Primary Technologies Stereolithography 3D Systems Fused Deposition Modeling (FDM) Stratasys Selective laser sintering (SLS) NOTES:  Systems typically cost in excess of $100K  Service bureaus
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STL files Native to stereolithography (3D  Systems) Enclose bounding volume with  mesh of faceted triangles Simple file format List of triangles Easy to convert More triangles, increased  accuracy ASCII or binary Redundancy
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RP System Characteristics Part orientation Support structure Hatch style Build envelope Materials Software interface
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  • Fall '05
  • Leake
  • Fused deposition modeling, FDM Dimension printers, triangles Simple file, Design evaluation Function, fully  enclosed volume

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