SLA (Stereolithography) printer, or a photopolymer printer, is a 3D printing technology that uses light to transform liquid resin into solid plastic. If an FDM printer is a "robotic glue gun," then SLA is the "magic of light."
How it works
Liquid photopolymer (resin) is poured into a special vat. An ultraviolet laser (or screen) shines from below, "drawing" the outline of the layer. Where the light hits the resin, it instantly hardens and adheres to the platform. Layer by layer, the platform rises from the vat, and the finished model literally "grows" from the liquid.
