FDM, or Fused Deposition Modeling, is a widely used 3D printing method known for its ease of use and versatility. In this process, a thermoplastic filament – ​​such as PLA, ABS, PETG, or other plastics – is extruded through a heated nozzle and deposited in thin layers onto a print bed. These layers are built up incrementally until the entire 3D object is complete.

FDM is particularly popular due to its cost-effectiveness and wide material availability. It is ideally suited for printing functional prototypes, simple parts, and models that do not require extremely high resolutions. However, FDM does have its limitations regarding surface quality and print resolution, as the visible layers sometimes require post-processing to achieve a smooth surface.