FDM, SLA and SLS: Differences Between 3D Printing Technologies

The three most common 3D printing technologies each work on different principles. FDM (Fused Deposition Modeling) melts plastic filament and lays it down layer by layer; its affordability and wide range of material options make it the first choice for both hobbyist and industrial use. SLA (Stereolithography) cures liquid resin with UV light to achieve extremely high detail and smooth surfaces; it is the standard in jewelry making and dentistry. SLS (Selective Laser Sintering) melts powder material with a laser to produce strong, functional parts with complex geometries that require no support structures.

Which technology you choose depends on the purpose of the part: FDM stands out for mechanical strength and low cost, SLA for fine detail, and SLS for serial production of parts with complex geometries. At Ucuz3D, we produce across a wide range of materials using FDM technology.