What primarily determines the resolution in FDM technology?

The resolution in Fused Deposition Modelling (FDM) technology is primarily determined by the nozzle size and the movements of the deposition head. The nozzle size directly affects the diameter of the filament extrusion, which in turn influences the level of detail that can be achieved in the printed object. A smaller nozzle can produce finer details and smoother surfaces, resulting in a higher resolution.

Moreover, the precision with which the deposition head can move and control the extrusion of the filament contributes significantly to the resolution. Accurate movements allow for more precise layering and positioning of the filament, leading to improved print quality and detail.

While other factors, like environmental conditions and the type of filament, can impact print quality, they do not directly influence the fundamental resolution capability on the same level as the nozzle size and the mechanical movements of the printer.