Digital Light Processing (DLP) starts with a vat of liquid photopolymer or resin that is cured by a digital light source as it repeats this process to build parts layer by layer.

Multi Jet Fusion (MJF) begins with a thin layer of powdered material being deposited across the build platform. Droplets of fusing and detailing agents are applied along with thermal energy on top of the powdered material to define the part’s geometry.

Selective laser sintering (SLS) uses a laser as the power source to sinter powdered material, aiming the laser automatically at points in space defined by a 3D model, binding the material together to create a solid structure.