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Stereolithography

by Raymond S. Freed, 3D Systems, Inc, United States,



Document Type: Proceeding Paper

Part of: University Programs in Computer-Aided Engineering, Design, and Manufacturing

Abstract:

Stereolithography is a three-dimensional printing process which produces accurate copies of CAD solid or surface models directly from CAD data. The process uses a moving laser beam, directed by computer, to print or draw cross-sections of the model onto the surface of photo-curable liquid. A cross-section is drawn, lowered by an elevator one layer deep into a vat of the liquid plastic, and another cross-section is drawn directly on top of the first. Because of the nature of the liquid plastic, each layer adheres to the last. This process is repeated, layer by layer, to form the three-dimensional Stereolithographic part from the bottom up.

Subject Headings: Computer aided design | Three-dimensional models | Synthetic materials | Cross sections | Plastics | Model accuracy | Graphic methods

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