Drawings in 3D CAD software are typically made using dimensions rather than coordinates. While this seems simple enough, I quickly realized that I had never created a model in 3D CAD from coordinates alone. The figure with its points labeled as x, y, z coordinates My sister gave me the figure from above with all of the points labeled with their x, y, z coordinates as shown in the image below. It is showing how the shape can be used to tile space. Īlex McDonough made the animation below in Blender. The figure used in Alex's research paper. The model is composed of three parallelepipeds, one large one in the back, a smaller one in the front, and a small cube on top. This led to challenges when she gave me the input information for the model she wanted me to fabricate. My sister who studies math, comes from a very different educational background, and as a result does not have experience using CAD software to provide me with an STL file. I can simply import this STL file into my slicer program, generate the code for the 3D printer, and start printing the part. These requests are usually made with them providing me an STL file of their model. In the past when I have been asked to print 3D parts, the requests have come from engineers and technologists with some experience using 3D CAD software such as Autodesk Inventor, Solidworks, FreeCAD, etc. This shape is from Alex McDonough’s research paper: “A Combinatorial Mapping For The Higher-Dimensional Matrix-Tree Theorem”. My sister recently commisioned me to make a 3D printed model of a mathematical shape.
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