![]() ![]() In the second image this order is (clockwise): orange, red, dark green, light green, yellow in the face visible in the front but it is different in some Note that the order in which colors appear in each of the pentagonal faces of the underlying dodecahedron is not the same for each face.Three-dimensional anaglyph images of this model can be quite helpful if you get confused.In the third image to the right, this would correspond to having connected the red, light green and dark green frames,Īnd looking at them trying to place three connected orange units over them (and then adding the other three orange units in the back to close the frame). Alternatively, after you have assembled three tetrahedra, find the “knot” where three edges of three different tetrahedra are woven together and try to.This structure is partially visible in the last image under the front vertex of the red frame. Vertex), three differently colored frames cross, forming a triangle similar to the inner part of theīorromean rings. Note that under the nearest visible vertex of the orange tetrahedron (and, symmetrically, under every other ![]() You can just copy the third frame, only rotated. Once you manage to add the third frame (which is the hardest step in my opinion), the fourth and fifth are much easier because due to the high symmetry,.“surround” one edge of the orange tetrahedron placing that edge inside a “fork”. One edge of each of them goes under one of the three visible edges of the orange tetrahedron. Have a look at the high symmetry of the threeĪdditional tetrahedra. Now, you will have to weave three other tetrahedral frames around the base which consists of two frames.the vertex of the orange tetrahedron closest to the observer in the Look directly at a vertex which goes through the base of the other tetrahedron (e.g.Start with two frames placed so that a vertex of one goes through the base of the other one and vice versa (“3D star of David”).To trace the different frames inside the tangled model and make it easier to find your way around. Version looks more elegant, but if you are folding FIT for the first time, I recommend you start with the multi-colored version. Two common colorings for this model are to either use five different colors, one for each tetrahedron, or to use a single color.The deep symmetry of this model are really fun even if it takes more time to finish the model that way. ![]() I recommend that you first try itĪll by yourself, following only the advice found on Tom Hull’s page and come back to the instructions below only if you can’t manage. Spoiler warning: in my case, once I arrived at the rules described below, I was able to finish the model rather quickly. This method is completely different from mine and it starts by creationg a 3D compound of four triangles (not tetrahedra). The last few pictures are three-dimensionalĪnaglyph images which can be viewed using red-cyan glasses to give an impression of 3D.īefore you proceed with reading my notes, I also need to mention another, very interesting method of assemblyĭescribed by Dirk Eisner and based on ideas from If you don’t have a folded model handy, you can use the pictures of the finished model found here as reference. If you already managed to fold the model once, the actual folded model is the best help you can get and much better than any flat pictures or diagrams. In this article I describe some rules and tips I came up with when assembling this model whichĬan hopefully be useful to other folders as well. Original instructions for assembly are adequate, but not perfect. While folding the units is quite straightforward, joining them in the proper manner is not. The author has prepared folding instructions, including diagrams for folding the units and information on assembling them, on Woven polyhedron type and an interesting mathematical object Step-by-step diagram, Folding tips Tom Hull’s folding instructionsįive Intersecting Tetrahedra (FIT), designed by Thomas Hull, is probably the most popular model of the FIT (Five Intersecting Tetrahedra) in other colors, FIT (Five Intersecting Tetrahedra), silver
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