I'm trying to make a shape in Stell4D that I call the concave triakis octahedron. It has the same face dimensions as the triakis octrahedron but...

APNGs are just animated PNGs without the tradeoffs of GIF, right? Also I want Stella4D to export an APNG directly.

Zonohedrification can generalize into any dimension except 0D, add it in the next update.

Some recent models using 3D-printed connectors for K'nex rods. Connectors modeled in OpenSCAD using vertex angles from Great Stella....

I put together a little puzzle, to count intersecting cubes. You can test your answers and I just added hints in the form of colours.

Let me...

I was browsing through some old posts in this section, when I came across a reference to Mathematical Models by Cundy & Rollet. A little later, I was...

I found this polyhedron while going through facetings of the snub tetrahedron/icosahedron. Has anyone seen this before? I find this faceting to be...

Check out some new videos of world record times being achieved over on the video page:

Amazingly fast play!

If you like my MineSweeper3D game, you may be interested in my new tile-flipping puzzle app Flippant!

Simple to play, challenging to master.

See...

If you like my Stella software and geometry in general, you may be interested in my new tile-flipping puzzle app Flippant!

Simple to play,...

Just finished a new paper model, the small snub icosicosidodecahedron:

New member with interest in making, via CNC, wooden models of the various shapes.

Would appreciate contact with other members with similar interests

Two of my models were accepted for display at the Bridges 2016 conference in Finland in August, as shown below with a picture of one of them being...

Would it be possible for Stella to explore plane tilings as well as polyhedra?

There seem to be two approaches to tiling:

Symmetries (e.g....

Hi Rob,

Apart from doing a screen/window capture is there any way of retrieving the information in the Great Stella info window? Appreciate that...

Where you can find models of polyhedra crystallography? (cubic, trigonal etc)
They are available in stella?
thanks for the reply
thx

Not so long working with Great Stella but.. I want to let the world know that you can make wonderful tours (slideshows with very impressive...

Not so long working with Great Stella but.. I want to let the world know that you can make wonderfull tours (slideshows with very impressive...

Hi, I am looking for a way to get polyhedra as vector out of Great Stella.
DXF export and import in AI/CDR X6 is what I already have tried but
the...

One feature that would be quite useful would be the ability to rotate and move a part of a compound. This could be used to produce interesting...

Just bought Great Stella4D. Happy to join the club of symmetrists. Having built quite a few models over the past years I am ready to tackle the...

If you purchase Stella or MineSweeper3D using PayPal before June 30th you have a chance to win $10,000. So if you've been procrastinating, now's the...

Here's a couple of not-quite near misses I created recently. They're like near misses, but maybe not quite close enough to earn the title. They're...

Hi

I've just spent a frustrating couple of hours trying to find an app that could display Stella4D 3D models on my original iPad running iOS 5.1.1....

Stella 5.1 has been released!

It's a free upgrade for existing Stella 5 users.
Improved control over background image.
More options when creating...

My question has to do with what Stella is looking for when you import a 4D off file. In your standard polychoron only two cells meet at each face. Is...

Bonjour,
j'ai remis en ligne un groupe facebook pour les polyèdres et les formes mathématiques.

Dans les forums, vous discutez entre...

I'd like to see a File > Export Net... command. This would allow you to choose a file type (DXF, AI, etc) and write the 2D nets, with separate layers...

Hi folks,

I have just created a facebook page for Stella, so if you're a facebook user, feel free to like it and help get it started.

Thanks!...

Back in 2003 there was a story about Great Stella on TV.
You can see a bunch of my paper polyhedra here too.

Rob.

At this site you can buy a 3d model of carved elements, such as:
Carved arches, carved moldings, carved coats of arms, carved capitals, carved...

This thought started a few days ago when I thought I'd try and export images of each stellation of the icosidodecahedron. I noticed there wasn't...

I've stumbled upon this little chestnut a couple of times now. I load up (or create a model) in stella and go to view and print nets, and the nets...

hi there,
i have a question regarding stellations, on my copy of stella i cannot seem to show the stellations when im in the view base polyhedron...

I'm in the process of building a website, part of which I want to use to display images of polyhedron models I've built.
I thought it might be nice...

I took a moment to learn the .OFF file format, and decided to 'write' my own polyhedron model.
It's a sort of octagrammic bipyramid. Might be useful...

Robert

It happened already several times that I just had typed
in a longer text, and when I hit preview , I was asked
to log in again, and...

Hi Rob

I found a new file. I don't know what it's called. But inside, I can make right pyramids,irregular tetrahedra, podiums, antipodiums, tori,...

Hello everyone out there.

Are you looking for some new challenge? Have you ever tried to solve boards with a total of 30% mines or even more?
I...

Thanks to TriNitro for recording this video as he played to get a new MineSweeper3D world record!

Rob.

Dear Software3D Forum Members,

some days ago i submitted my MineSweeper3D world records to Robert Webb and in a somewhat sceptical and amazed...

This is how a compound of 5 rhombihexecontahedra (RH) can be created:

The RH is made of 60 rhombs with an acute angle of 63.4349 degrees. To...

Hey folks,

This is where a rice cracker with personality meets polyhedra. Hmm, hard to explain so just see for yourself. There's even a facebook...

Hi Rob.

I've discovered a new stewart toroid!
Basicly K5 / 12Q5 S5 (E5) + 20 (R5 / S5 Q5)

Just bought Stella4D, will be using it to cut facets on my CNC machine thence to make wood realizations of the various shapes. I build furniture...