Circumradius (or out-radius) is simply referred to as "Radius". Technically speaking, a polyhedron may not have a circumradius, which would have to go through all points, so I just use the more generic term radius.

For others following this thread, Graham contacted me off-forum and the issue is resolved. No bug, just needed directions to the Shift+E setting (Display->Vertex & Edge Options->Show Stellation Edges).

With this enabled, you can see the edges of the stellation, even in the base view, so as you hit ...

It shouldn't behave any differently on a PC or a laptop. Did you try viewing the same stellation on each? When you say "it's not there", what do you mean exactly? Does it continue to show the original shape, or does it show nothing at all? Maybe email me a screen shot (see the Contacts page on the ...

I thought about 4D dual morphing before, but haven't got around to it yet. I guess all you'd be able to see during the morph is the 3D projection, ie not cross-sections or nets, though you could convert a morph to be the new base model to obtain those.

For morph by rectangles (maybe I should rename ...

Looks great, well done!

Sounds like your a double-tabs convert too

Nets are made from whatever appears in the stellation view, so have a look at the stellation view to see what's happening. You can also try the 3D folding net view to see how the nets fold up.

Now the stellation view, by default, figures out which stellation chunks are required to recreate the ...

Well I wasn't serious about making it. I certainly wouldn't try!

You can simplify models yourself with stellation mode to remove small chunks that make things difficult.

I think maybe less than ten accurate models of the small inverted retro snub icosicosidodecahedron have ever been made. Even Fr ...

Nice. Will you be making one from paper?

Yep, you can scale models before putting them in memory, or before adding the other one from memory, using any (well most) of the items on the Scale menu. These allow you to set the size of the model by specifying the radius, edge length, inradius, surface area, volume etc.

Nothing appears to ...

I mostly just use 120gsm paper. Thin enough for accurate results, but still pretty sturdy once a model is completed.

I have heaps of dead CDs around, but haven't really tried making anything with them. Ideally I'd like to be able to cut them up, but not sure how to do that without the coating ...

That error occurs during the stellation process (possibly via trying to show nets). It probably means the model being imported does not have sufficient accuracy. Stella requires double-precision floating-point accuracy. I don't know what javaview does, but if there's a way to export with 15 or more ...

Hey, sorry about this, but it looks like you have indeed found a bug! I looked a bit closer and you're right. It seems the triangles surrounding each vertex are correct, but some of the smaller triangles hanging off them have their colours swapped around. I'm surprised no one came across this before ...

I just tried it, and it seems to work for me. You're using a colour printer I take it to colour in the faces? (I mostly use coloured paper and just print the outlines). When I tell it to mix colours, each copy of the net is correctly getting a different arrangement of colours. Are you not seeing ...

I used CamStudio, an open source screen video capture program.

http://camstudio.org/

I don't suggest the "stable" 2.0 version, which is very old now and has problems. Rather download the latest beta version (2.6 as of this writing).

I just thought of a partial answer for your original question.


Start with the snub dodecahedron.
Color -> Special Color Arrangements -> Icosahedral Arrangement 1
This colours the icosahedral faces, but leaves all the snub faces yellow.
Select a yellow face.
Color -> Take Color from ...