Types of 3D Printing
SLA works by exposing a layer of photosensitive liquid resin. SLA creates smooth surfaced objects with extreme detail.
SLS is similar to SLA, but the key difference is that this type of 3D printer uses powdered material in the build area instead of liquid resin.
FDM is the most common 3D printing method used in desktop 3D printing. Thermoplastic filament is heated and extruded through an extrusion head that deposits the molten plastic in X and Y coordinates, while the build table lowers the object layer by layer in the Z direction.
Effectively, the object is built from the bottom up.
Locker, Anatol. “9 Basic Types of 3D Printers – 3D Printing Technology Guide.” All3DP. July 20, 2017. Accessed September 18, 2017. https://all3dp.com/1/types-of-3d-printers-3d-printing-technology/.