I asked:
> > Does anyone know of a modular icosahedron with plain faces and a > strong lock? Jose Ignacio Royo wrote: > > Two come up to mind. Both of them look clean, plain-faced and are quite > solid: > > 1) In David Mitchell's "Mathematical Origami" there's an icosahedron > by Tomoko Fuse which fits your description. Five modules. > > 2) There's another icosahedron by Tomoko Fuse with those > characteristics in an Origami Tanteidan Magazine, some (eight?) years > ago. I cannot check the exact number now. > > I still haven't been able to find David Mitchell's book, but I searched Gilad Aharoni's webpage and found Icosahedrons by Tomoko Fuse diagrammed in Tanteidan magazine 111. I tried the first one, the lock is ok but there are 6 faces that are half of one module and half from other and there are 2 faces that are composed of the 3 modules, so it's not what I'm looking for. I'm struggling with the second icosahedron on the same magazine also by T. Fuse but from the diagram I can see there are 2 faces that are composed of the 3 modules. It seems like it's very difficult to get the plain faces. -- Jorge Jaramillo
