Like in other fields of life, advancements have been made in the field of printing as well. 3D printing is the most advanced and revolutionary form of printing that exists today. 3D printing means creating a three dimensional object. 3D printing is used in manufacturing industries to create prototypes and parts of machines to check their functionality and strength. 3D printing is also known as rapid prototyping. These printers are becoming popular among the manufacturing industries as they are cheaper and faster than the traditional additive fabrication machines. 3D printers make an object by layering and cross sectioning of specific material according to a specific design.
The different kinds of 3D printing
There are a number of kinds of 3D printing which vary on the basis of their technology, way of working and the material they can use to create objects or prototypes. Major kinds of 3D printing are discussed below.
1. Fused Deposition Modeling (FDM)
FDM is a 3D printing technique to convert computer aided designs to physical parts or objects. This type of printing is done by a printing machine with a jet. The machine like a hot glue gun, throws the semi molten filaments of plastic according to the computer design given to it. The object is created layer by layer. You can check tolerance level and strength of the final product by using Fused Deposition technique.
2. Direct Metal Laser Sintering (DMLS)
Another 3D printing technique is DMLS or Direct Metal Laser Sintering. This kind of printing uses laser technology which is the most revolutionary technology of the world. DMLS 3D printing is a cost effective and faster way of creating prototypes or parts of machines and for this very reason it is becoming very popular in manufacturing industries.
The laser technology cuts the metal and sinters it according to the computer design provided to the printer.
3. Stereolithography (SLA)
SLA 3D printing also uses computer aided design or CAD to create 3D model layer by layer. It uses UV laser beam and creates the object in UV liquid resin.
4. Electron Beam Melting (EBM)
EBM machine creates the object after receiving the design from computer. The electron beam creates the design layer after layer. Like in sintering techniques, this technique does not require additional thermal treatment when the object is created.
5. Digital Light Processing (DLP)
Digital Light Processing uses DMD or digital micromirror device which contains millions of microscopic mirrors to reflect the light. It can project the image on bigger screens.
6. Selective Laser Sintering (SLS)
SLS uses powdered material like particles of glass, metal, plastic etc to create a 3D object.
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