“What Does FDM Stand For in 3D Printing? Fused Deposition Modeling Explained” — what this page in the network covers. FDM, or fused deposition modeling, is one of the most widely used 3D printing technologies. It works by heating a thermoplastic filament to a semi-liquid state and extruding it layer by layer to build a three-dimensional object from a digital design. The process is known for its accessibility, affordability, and ease of use, making it popular among hobbyists, educators, and professionals.
Unlike resin-based methods such as stereolithography (SLA) or powder-based methods like selective laser sintering (SLS), FDM uses solid filament and does not require post-curing or complex material handling. This distinction matters because it affects print speed, material properties, surface finish, and cost. FDM parts often show visible layer lines and may have anisotropic strength, meaning they are weaker in the vertical build direction. The full version stays on the original page, which this listing opens directly.