Various methods are employed under the main additive manufacturing technology & some of these technologies are mentioned below.
It is the most-used and oldest 3D printing method which was invented in 1986. Vat Polymerization is the process used to produce objects with this method. Photopolymer resin filament is used which is cured by a light source.
Digital Light Processing (DLP)
The DLP process is similar to the SLA technology and the DLP machines used are also similar to the SLA technology. However, here a light source is projected to the layers via LED screens.
Other methods used in the additive manufacturing process are Fused Deposition Modeling (FDM), Selective Laser Sintering (SLS), Material Jetting (MJ), Drop On Demand (DOD), Electron Beam Melting (EBM) and more.