Stereo lithography (SLA) technology was the world's first powerful 3D printing technology that produces fine detailed prototypes and high resolution parts. It is a laser based technology which uses ultraviolet (UV) laser beam to scan the surface of the liquid photosensitive resin .The resin is scanned according to the cross sectional shape of the part so that it is selectively cured. It is cured layer-by-layer until the 3D solid model is formed.
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