Instead of filament as a printing substrate, SLA printers start with a resin liquid that is hardened via UV radiation as it is molded into the desired shape within the printing chamber. Stereolithography, while actually a decades-old technology, is less common due to the greater cost of SLA printers and their proprietary resins (there are a few 3D printers that use resin, but they tend to be on the smaller side). Most 3D printers you’ll find will be of this design. Items made with an FDM 3D printer usually have a noticeably striated appearance due to this layer-by-layer building method, but filaments and the printers that use them are improving and growing more capable of handling complex tasks as this technology continues to mature. This filament is heated to its melting point and then extruded through one or more printing heads, which move along three axes to create an object layer-by-layer from the bottom up on a heat-dispersing build plate.įDM printers tend to be the most user-friendly and the filaments they use are also very common and quite affordable, making these 3D printers good for household items and other common projects. FDM printers are more popular and use a printing medium known as filament. Modern 3D printers employ one of two manufacturing technologies: Fused deposition modeling (FDM) or stereolithography (SLA). Even these run the gamut when it comes to cost, so it’s worth it to spend some time to track down a budget-friendly 3D printer (or at least a worthy 3D printer deal on a more expensive unit) that can meet your budget while also satisfying your needs. Such equipment is naturally beyond the needs or means of most people, however, and the vast majority of consumer-grade units are designed to fit on a tabletop. Three-dimensional printers cover a huge range of sizes and prices, with some industrial models capable of printing houses.
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