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Selective laser melting (SLM) is one of many proprietary names [1] for a metal additive manufacturing (AM) technology that uses a bed of powder with a source of heat to create metal parts. Also known as direct metal laser sintering (DMLS), the ASTM standard term is powder bed fusion (PBF). PBF is a rapid prototyping, 3D printing, or additive ...
The printer deposits the metal-infused filament layer by layer, building up the shape of the part. These printed parts are referred to as "green" parts. To compensate for predictable shrinkage during the subsequent sintering process, the green parts are scaled up by 15-20% from their final dimensions. [1]
3D printing, or additive manufacturing, is the construction of a three-dimensional object from a CAD model or a digital 3D model. [1] [2] [3] It can be done in a variety of processes in which material is deposited, joined or solidified under computer control, [4] with the material being added together (such as plastics, liquids or powder grains being fused), typically layer by layer.
He adapted and simplified the RepRap Mendel design, reducing the time to print 3D plastic parts from 20 to 10 hours, changing to the use of two Z-axis motors to simplify the frame, and including 3D printed bushings in place of regular bearings. [7] [8] First announced in September 2010, the printer was dubbed Prusa Mendel by Průša himself. [9]
In the United States, the Hill Air Force base is using 3D printed parts in repair of fighter jets. [76] Higher education has proven to be a major buyer of desktop and professional 3D printers. [77] Significant desktop 3D printer purchases by both K-12 and universities helped sustain a desktop 3D printer market that had problems in 2015–2016. [78]
A LulzBot Mini, one of several models in the LulzBot line of 3D printers. The company is most well known for its LulzBot 3D printer product line, which although using some extruded aluminum railing and other mass-production components still remains true to RepRap principles by having many components 3D printable.
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