What is the difference between FDM 3D model and ABS 3D model?

FDM is a 3D printing technology that builds models by extruding molten filament layer by layer, while ABS is a thermoplastic material often used in FDM to create strong, impact-resistant models. FDM describes the *printing process* (how the model is made), while ABS determines the *model’s properties*—like durability, stress resistance, or ease of sanding/painting. For functional parts (e.g., prototypes, tool handles), ABS in FDM boosts toughness; for simpler decorative items, a softer FDM material like PLA is more convenient.