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With the help of specialized 3D scanners, you can 3D-scan people and animals. This allows you to create 3D models that can be 3D-printed or used for 3D animation. We'll show you three different devices that make such 3D scans possible.
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Kitbashing is associated with model making. It is composed of the words "Kit" and "Bashing". “Kit” refers to "model kit". So, when a model maker is "kitbashing", he blends parts from different model kits. Similar to a collage. The model maker combines several individual models into an entirely new model.
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A NURBS model consists of points connected by curves. A polygon mesh consists of thousands or millions of small triangles. CAD surface models are usually created using NURBS surfaces, while 3D scans are typically exported as a polygon mesh. The conversion from a polygon mesh to a NURBS model is called "reverse engineering".
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Reverse engineering enables us to create a copy of an object. For this purpose, the part is 3Dscanned, then the 3D scan data is converted into a CAD format, and finally, the part is manufactured. All these steps result in noticeable deviations. If an error adds up over multiple steps, then we call this error propagation.
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Swann Rack from Holocreators gave a presentation on reverse engineering at the Rapid.tech 3D Congress 2018. Reverse engineering allows an object to be reproduced using 3D scanning and subsequent conversion into a CAD format. In his presentation, Swann Rack talked about the different 3D scanning techniques and how the reverse engineering process works.
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We digitally repaired the broken clothes rail holder of an IKEA closet and then 3D-printed it in plastic. We first 3D-scanned the original broken part using a 3D CT scanner (computed tomography 3D scanner). Afterward, we reconstructed the 3D scan using reverse engineering and thus repaired it. The finished file was 3D-printed inside a laser sintering 3D printer.
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