Stereolithography (SLA) is a 3D printing technology that uses a UV laser to selectively cure liquid photopolymer resin layer by layer. It typically operates with a layer thickness of 10–100μm, constructing objects through precise laser scanning of each cross-sectional profile on the resin surface. While SLA features moderate printing speed compared to some high-throughput methods, it offers exceptional dimensional accuracy and smooth surface finishes, making it ideal for intricate designs and detailed prototypes. The process often requires support structures for overhanging features and post-curing for enhanced mechanical properties. Suitable for applications demanding high precision, such as rapid prototyping, medical device models (e.g., dental aligners), jewelry casting patterns, and academic research, SLA remains a go-to technology for producing visually and dimensionally accurate parts with fine details.