What is Fused Deposition Modelling (FDM)?

Fused Deposition Modelling (FDM) is a prominent 3D printing technology that operates by extruding thermoplastic material through a heated nozzle. This material is deposited layer by layer to gradually build up a three-dimensional object from a digital model. The process begins with the creation of a design using computer-aided design (CAD) software, which is then sliced into thin horizontal layers by slicing software. Each layer is laid down in succession, allowing for intricate and complex geometries to be fabricated with relative ease.

This production method is specifically suited for creating prototypes and finished parts due to its versatility in material selection, cost-effectiveness, and relatively fast turnaround times. The strength of the final product can be influenced by various factors, including layer height, printing speed, and temperature settings during the process, which further highlights how integral the layer-by-layer approach is to FDM technology.

In contrast, the other options describe processes not related to 3D layer-based construction. Molding entails shaping materials permanently but does not involve the additive layer approach characteristic of FDM. Cutting techniques focus on precision slicing rather than building objects up from the ground. Lastly, melting metals to form shapes is a process more aligned with casting and not applicable to additive manufacturing