“Additive fabrication” refers to computer controlled build processes where materials are deposited in layers and aggregated to construct three dimensional objects. Three dimensional design data (often generated as a digital model) is used to drive 3D printers which deposit plastics, clay, powders, or some forms of metal. Many fabrication methods create objects through the removal […]
3D INK JET
This additive prototyping process uses an ink jet print head that moves across a layer of powder, selectively depositing a binding material. Another thin layer of powder is spread across each completed layer, and the process is repeated until the desired geometry is formed. Excess powder remains in the build bed until the process is […]
STEREOLITHOGRAPHY APPARATUS (S.L.A.)
A light-emitting device (laser or DLP) selectively illuminates the transparent surface of a tank filled with a liquid photo-polymerizing resin. The solidified resin is progressively dragged up or down by a lifting platform, resulting in a 3D object.
SELECTIVE LASER MELTING (S.L.M.)
S.L.M. (Selective Laser Melting) is a rapid- prototyping technique that utilizes a high density laser to sinter and fuse metal powder into a desired form. Thin layers of powder are rolled onto the work surface. Then, the laser is applied, selectively melting desired areas of powder to the layer below.
LAMINATED OBJECT MANUFACTURING
L.O.M (laminated object manufacturing) is a process wherein a sheet material is cut to shape and successively adhered in layers to build a three dimensional object. Layers aggregate in the Z direction.
FUSED DEPOSITION MODELING (F.D.M.)
FDM (fused deposition modeling) is an additive build process wherein thermoplastic filament is melted and extruded from a printer head and deposited onto a printing bed. The printer builds three-dimensional objects in layers. Each layer is printed in the X and Y directions (as a horizontal surface). Layers aggregate in the Z direction.