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Additive manufacturing design can be divided into two general steps: the pre-processing planning and the process chain. During the pre-processing planning a microstructure design (3D geometric modelling by the use of CAD modelling system) and properties are modelled (factors and parameters).
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 ...
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]
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.
For this kind of 3D printing technology additional vertical support structures d) are needed to sustain overhanging parts Example of a 3D printer. Timelapse video of a hyperboloid object (designed by George W. Hart) made of PLA using a RepRap "Prusa Mendel" 3D printer for molten polymer deposition.
The pilot project, Automated Construction for Expeditionary Structures (ACES), focused on concrete 3D printing and covered a broad range of research areas, including printing systems, printable concrete materials, structural design and testing, and construction methods.