Fused deposition modelling (FDM), also known as the material extrusion additive manufacturing technique, utilizes polymers as the raw material (filament). The filament is usually heated to a molten state and then extruded through the nozzle of the machine (3D printer).
![](https://corporate.berlinpackaging.eu/wp-content/webp-express/webp-images/doc-root/wp-content/uploads/2023/12/Proto_stereo_grezzo-1.jpg.webp)