Want to 3D print hundreds of parts? Multi Jet Fusion (MJF) can get you there. Like its competitor HSS from Voxeljet, MJF is a mash-up of two older powder bed technologies: SLS and binder jetting. In general, powder bed printing eliminates the joys of FDM, like manually removing a brim, scraping a build plate, or squeezing glue stick.
Binder jetting has applications from full-color prototypes to sand-casting molds. It has, by its nature, two components: a printed adhesive, or binder, and a powder substrate, such as sand or gypsum. The geometry of the part comes from the pattern of jetted binder sprayed onto successive layers of powder.
Selective laser sintering, or SLS, also starts out with a powder, but instead of jetted adhesive, a pulsed laser sinters tiny volumes (or voxels) of nylon powder together. Where the laser fires, a voxel is added to the part. Millions of voxels are laser-sintered together from successive layers of powder to form the part.
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