Layering Technology:
Almost all RP Systems use layering technology in the creation of prototype parts. The basic principle is the availability of the computer software to slice a CAD model into layers and reproduceit in a "output" device like a laser scanning system. The layer thickness is controlled by a precision elevation mechanism. It will correspond directly to the slice thickness of the computer model and the cured thickness of resin. The limiting aspect of the RP system tends to be the curing thickness rather than the resolution of the elevation mechanism.
(Chua C., Leong K.F. and LIM C.S. Rapid Prototyping: Principles and Applications Page: 47-48)
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