This is really a case of the blind leading the blind, because I haven't eny experience of importing models, but the Stella Help file says this: "If all else fails, and you can't find a way to create your favourite model in Stella4D, fear not! You can always import it from an external file. Currently...

It is not unusual for Ulrich to put a different spin on things...

Pete K

It is a work of art - very fine.

pete k

That's a great model, Ulrich - made with such precision. I never considered using balsa cement, but this is the second time I've seen it recommended recently, so I'll get some UHU Hart and give it a try.

Pete K

Rob, Thanks for your comments. I'm not sure if this will work, but we discussed options for building vertex-connected polys here: http://www.software3d.com/Forums/viewtopic.php?t=210&highlight= If that doesn't work, look for my post "Delicate Flower or Triffid ?". After that, I stayed well clear of ...

I've made several Great Icosahedrons and have noticed that it isn't quite as stable as say a Great Dodecahedron. I'm using index cards or thick colored cardboard, but it still has a tendency to deform a little. I thought of gluing a complex core inside to add some stability. For the Great Icosahedr...

Thanks Guy. I still can't visualise it, but I think you are right. I coloured one of the back faces with Stella and five others were coloured the same. As there are 120 of these pieces, that suggest 120/6 = 20 planes. I think I'll set them all to white.

Cheers,

Pete K

I think I've worked it out: the back face of each side of a star arm should be the same colour as its front face.

Pete K

I’m looking for some help with the 16th stellation of the icosidodecahedron (MW 63). This is a vertex-connected polyhedra. I’ve chosen special colour arrangement 2 (dodecahedral) so that the pentagonal faces are all the same colour, but stuck on what to do about the backs of the cells. The easy opti...

Rob, I used Stella to generate nets for the cube (how lazy can you get ?) and octahedron, but I used a compass to draw the curves (circular arcs). Even after all this time, I still only use a small percentage of Stella's capabilities, but that's because I can't sepnd as much time on my hobby as I'd ...

Just to show that I haven't been wasting my time over Christmas ;-) http://i1135.photobucket.com/albums/m629/polypete/CubeandOctahedron_zps82c0358c.jpg I saw a computer-generated image of this cube and its dual -the octahedron- and their common mid-sphere. Incidentally, if you ever need to glue anyt...

A great ruler & compass & skewer achievement! If only Euclid had been fond of kebabs, he might have produced an Elements 2.

Well done!

Pete K

Hmm, don't know what happened there. I was mid-way through a post. I'll start again. I have created a mock-up model that I think illustrates the process that is used to create this polyhedron: http://i1135.photobucket.com/albums/m629/polypete/IMGP0748-B.jpg Each trapezium on the central yellow band ...

At first reading, I thought that this was pretty straightforward to construct. I assumed that there was plenty of leeway in the choice of the equatorial pentagons, but a first quick model has proven me wrong. I'll have to read the details more carefully next time. The maths in the subsequent section...

I think Chapter 24 contains some equations or whatever they are - it keeps on saying it's simple - for the dimensions of the two types of pentagon. I wouldn't have a clue how to use them. I wonder if one way would be to make a couple of seven sided "pyramids" , and to mount them on a pencil or the ...