Rapid prototyping systems are controlled by a computer which uses the CAD representation to build parts according to an additive plane layering process. The computer controls a laser beam or a print head, or any process that leads to the formation of a slice of a part using resins, powders, paper, wax or other materials. The original CAD representation is translated into commands to drive the process, and accuracy issues will make or break these emerging technologies. It is therefore important to understand where the errors stem from, what are the issues associated with the software representation formats, and how to minimize or eliminate these errors. Presents a summary of CAD to RP software formats, and explains the accuracy issues associated with the selected representation. Discusses improvements that can be obtained by process modifications.
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