Additive Technologies
Multi Jet Fusion (MJF)
Multi Jet Fusion uses an inkjet array to selectively apply fusing and detailing agents across a bed of nylon powder, which is then fused by heating elements into a solid layer. After each layer, powder is distributed on top of the bed and the process repeats until the part is complete. The method of printing allows for fine details and part geometries that are difficult to accomplish via other manufacturing processes. After each print job is completed parts are allowed to cool off to prevent warping. After parts have cooled, excess powered is removed via and automated blasting machine. After the excess powder is removed the parts receive in an initial polishing via an automated blasting machine. Next parts are left raw or colored to customer specifications. After parts have dried, they are polished one additional time to improve surface finish and color consistency.
Stereolithography (SLA)
Stereolithography is an additive manufacturing process that works by focusing an ultraviolet (UV) laser on to a vat of photopolymer resin. With the help of a 3D model the UV laser is used to draw a pre-programmed design or shape on to the surface of the photopolymer vat. Photopolymers are sensitive to ultraviolet light, so the resin is photochemically solidified and forms a single layer of the desired 3D object.Then, the build platform lowers one layer and a blade recoats the top of the tank with resin This process is repeated for each layer of the design until the 3D object is complete. Completed parts must be washed with a solvent to clean wet resin from their surfaces.
Selective Laser Sintering (SLS)
Selective laser sintering (SLS) is an additive manufacturing (AM) technique that 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.The laser selectively fuses powdered material by scanning cross-sections generated from a 3-D model of the part on the surface of a powder bed. After each cross-section is scanned, the powder bed is lowered by one layer thickness, a new layer of material is applied on top, and the process is repeated until the part is completed.
Fused Deposition Modeling
Fused deposition modeling (FDM), or called filament freeform fabrication, is a 3D printing process that uses a continuous filament of a thermoplastic material. Filament is fed from a large spool through a moving, heated printer extruder head, and is deposited on the growing work. The print head is moved under computer control to define the printed shape. Usually the head moves in two dimensions to deposit one horizontal plane, or layer, at a time; the work or the print head is then moved vertically by a small amount to begin a new layer.