Stereolithography is a rapid prototyping process that uses a photosensitive liquid polymer as the starting material. The material is cured by a UV laser that solidifies the polymer layer by layer to form a 3D object. This process is widely used in 3D printing to create prototypes with high accuracy and resolution.
Fused deposition modeling (FDM) and laminated-object manufacturing use different materials and processes, and selective laser melting uses powder as the starting material.