The Fused Filament Fabrication (FFF) method creates a 3D object layer by layer from a meltable plastic.
One or more thin plastic filaments (usually PLA or ABS) are melted and deposited layer by layer through nozzles at the desired locations. The material hardens there, and a plastic part is formed. Since the part hardens slowly during the printing process, support material must also be built up by the printer. This support material is manually removed and must be disposed of after the printing process. Post-processing of the parts is more or less complex depending on the shape of the part. Simple, multi-colored models can be produced. The surface is slightly ribbed.