Solid Freeform Fabrication An Advanced Manufacturing Approach
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Solid freeform fabrication (SFF) is the production of freeform solid objects directly from a
computer model without part-specific tooling or human intervention. SFF has been realized in the
last ten years through the merging of several previously distinct technologies: computer science,
mechanical design, controls, high-energy beam technology and materials science and engineering.
Their combination has produced over a relatively short time..frame numerous SFF methods. The
value of SFF to the commercial sector is usually articulated in terms of reduced time to market
(prototyping), low production "one-of-a-kind" parts and patterns for casting. The purpose of this
introductory paper is to describe briefly some of the approaches to SFF as a background for the
articles included in this proceedings.