SLA or stereolithography is an additive manufacturing technology in 3D printing used for creating prototypes, masters and models. Additive manufacturing can be faster, more flexible and less expensive when producing relatively small quantities of accurate parts. SLA prototype is produced from a liquid in a layer by layer fashion using technique called photo-polymerisation. Photopolymers are sensitive to ultraviolet light, so the resin is photo-chemically solidified.
SLA is most suitable for visual applications where a smooth surface finish and a high level of detail are required. SLA also produces a wide variety of shapes, finishes, textures and colour. As a result, functional testing can be initiated early in the design process. At the same time, these prototypes can be used to assess potential customer acceptance.