I presume that question's for Guy? I only make models from paper. Just wanted to answer the part of the question I could :) No, I don't post images of real models (except the odd icosahedron in a museum that I think may have been made by H.T. Flather of Coxeter, Du Val, Flather and Petrie fame). An...

Well, the wood will be thinnest in the corners and thickest at the centre of each piece. Assuming you want at least 1/2" everywhere, you need to: Take the difference between the inradius (radius of the sphere tangent to the faces at their centres) and the out- or exradius (of the sphere tanget to th...

Stella uses OpenGL (the Open Graphics Library) for rendering. AFAIK this is just like the real world in that it needs a light source or everything looks black. The 3D rotation, perspective and stuff is also handled by OpenGL, so decoupling the colour from the rest of the software might be a problem....

I'm guessing that with no light source, things would get pretty black. I'm also guessing that any polychromatic light source will have consequences for one form of colour-blindness or another. How about an option for a monochromatic light source to match the raw pixels - choice of red, green or blue.

You must be feeling eight miles high (though I prefer the 20 minute live version on the untitled album).

You have your X, Y and Z axes. How do you go beyond these? Mathematically it is really easy, you just add a W axis at right angles to all the others. When you project a 3-D object onto the X-Y plane (say a computer screen), you just forget the Z dimension. Similarly, to project a 4-D object onto th...

Around a century ago, when extra dimensions first became popularised, people investigated these issues. There is some evidence that Picasso used time and cubism as analogues of the fourth dimension - he was certainly fascinated by it. One painting has a succession of figures as if caught in multiple...

Sounds like the paper is too thin and/or the glue too watery. Depending on the ink, different glues have different effects on the lines. I use a thick art paper or even thin card, and a non-water-based quick-drying glue such as Bostik. But I have to be careful with laser printers, because Bostik dis...

Rob, doesn't Stella offer svg vector output for nets and perspectives? These can be displayed directly in any modern web browser, or printed off, and crucially at any scale without loss of detail. They are even cross-platform. Sorry I can't check my own copy, I no longer run Windows and am not yet c...

Lovely! It reminds me of the rocket in the Tintin story, "Destination Moon".

robertw wrote:Not sure how saleable another maze program would be though!

Well, how saleable was yet another minesweeper program?

Yes, there are many such polyhedra, known as deltahedra. See for example the Wikipedia
Deltahedron article.

According to Wenninger, there are 30 pairs of squares. They are diametral or "hemi" faces, so there is no parallel pair. To colour each pair differently would need 30 colours. That makes 6+10+30=46 colours in all. Ouch! Wenninger describes a simpler colour scheme. He uses a simplified set of 5 colou...

Hi, those are beautiful. I wish you all success. What about offering other shapes, such as the stella octangula, rhombic dodecahedron and maybe even small stellated dodecahedron? I have a large-ish model of a small stellated dodecahedron made of shiny golden card that I bring out every Christmas: ju...

I once gave away a great stellated dodecahedron - once I pointed out the pentagonal star faces, my neighbour was fascinated by it.