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The process is repeated, adding new structures to increase the coverage of the material space. The solid or the surface model to be built is converted into the appropriate format. The STL file format originated from 3D systems, which pioneered the stereo-lithography system, can be cited in that case. 3. Checking and preparing
The use of multi-material 3D printing reduces the amount of post processing needed for the same result, as colours can be printed directly. Furthermore, it is possible to use a water soluble material for printing the support structures, as their removal only involves placing the object into a water bath. [11]
In 3D printing, the bulk of each printed layer, regardless of complexity, is deposited by the same, rapid spreading process. [9] As with other powder-bed technologies, support structures are generally not required because loose powder supports overhanging features and stacked or suspended objects.
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.
Computer-aided design (CAD) model used for 3D printing. The manual modeling process of preparing geometric data for 3D computer graphics is similar to plastic arts such as sculpting. 3D scanning is a process of collecting digital data on the shape and appearance of a real object, creating a digital model based on it.
This advancement significantly facilitates the creation of complex geometries, as the support material can be effortlessly broken off after printing. A notable example is Desktop Metal’s machine, which employs a ceramic interface layer on all support structures. This feature ensures that the supports can be snapped off with minimal effort ...
Early construction 3D printing development and research have been under way since 1995. Two methods were invented, one by Joseph Pegna [9] which was focused on a sand/cement forming technique which utilized steam to selectively bond the material in layers or solid parts, though this technique was never demonstrated.
The proportion of these structures, known as 'infill density', is a key parameter that can be adjusted in the slicer. Support structure (in blue) generated by Cura software. Supports: Since most 3D printing processes build objects layer by layer, from the bottom up, each new layer is deposited directly on top of the previous one. Consequently ...