Fused Granular Fabrication (FGF) is an additive 3d printing method in which the 3d model is being printed layer by layer. FGF works by melting granular plastics and feeding the resulting mass at a constant speed through a nozzle onto a platform. By changing the nozzle, more or less plastic can be outputed at a time resulting in higher printing speeds or finer details.
For each layer printed, the printing platform is lowered, allowing for the next layer of the model to be added. When needed, a supporting structure can be printed to allow for overhang in the model. This method is most commonly used for the creation of prototypes and afterprocessing of the model, such as grinding, may be required to achieve the desired results.