Rapid prototyping allows for the quick fabrication of physical models using 3D computer aided design data. It involves building 3D objects layer by layer through techniques like 3D printing or additive layer manufacturing. Rapid prototyping has various uses including generating molds for production, creating models for engineering and construction projects, manufacturing replacement parts, and developing medical devices and surgical planning models. Common rapid prototyping methods are stereolithography, fused deposition modeling, and selective laser sintering.