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This technology was first developed at the Massachusetts Institute of Technology and patented in 1993. In 1996, the ExOne Company was granted an exclusive field-of-use patent for the technology, [2] while Z Corporation, which was later acquired by 3D Systems, [3] obtained a non-exclusive patent for use of the technology for metal casting purposes. [4]
The sacrificial mould for the investment casting was 3D-printed with integral cable routing and toroidal propellant tank. From left: Peter Diamandis, Chris Lewicki, and Steve Jurvetson. Investment casting is used in the aerospace and power generation industries to produce turbine blades with complex shapes or cooling systems. [14]
3D printing is used to manufacture moulds for making jewelry, and even the jewelry itself. [102] 3D printing is becoming popular in the customisable gifts industry, with products such as personalized models of art and dolls, [103] in many shapes: in metal or plastic, or as consumable art, such as 3D printed chocolate. [104]
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.
The advent of 3D printing has complemented traditional methods such as lost-wax casting. 3D printers use castable resins to create molds that allow for highly detailed designs. This technology is particularly valuable for producing complex pieces such as filigree necklaces or detailed settings that are difficult to achieve manually.
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