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 zonohedra.
Improved 3D export of 4D models.
Various fixes.
Full details on the Version History page.

http://www.software3d.com/ScreenShots ...

Looks nice. Did you use Stella's "Display->Show Intersections with Spheres" option to draw the curves on the nets?

I actually just noticed that the curves don't appear for this model when the sphere is exactly the size of the midsphere. I've fixed that now and just released Stella 5.1 which ...

Thanks. Been a while since I wrote that. I wrote that I was working towards the next major release back in 2008 and didn't finally get around to releasing it till this year 2012! So now finally those new representations of unusual symmetry groups are available (though I wonder how many people will ...

Funny that someone else just asked about this. See that and my reply here .

I don't have laser cutter, so maybe someone can tell me what would be needed from Stella's net-printing in order to make use of these devices.

For example, maybe it is just a matter of using a different colour for edges to ...

The intention was that nets would be printed out directly, so no there's no explicit option to export the nets. However you can install a PDF printer (such as PDFCreator), which allows you to print straight to a PDF file, after which you may be able to bring the PDF into another package.

What about ...

Hmm, I have no idea what happened, but glad it sorted itself out.

Rob.

I made the tabs a little lighter to distinguish them, but tried not to make them much lighter. But then I try to avoid dark paper as much as possible!

Currently the shade of tabs can't be changed, but you could try the following. In the Print Options dialog find the Line Widths section and change ...

It's probably just a mistake in Magnus's book.

How did you test a mitre angle with paper??

Yes, you can email pictures to me, or if you have them hosted online somewhere you can post them yourself on these forums. You can open a free photobucket.com account to host images if you wish.

Rob.

I don't think you're missing anything. Stella reports the same mitre angles that you use. Maybe Magnus divides the dihedral angle differently, not equally. You could use the same angles all around the squares if you adjust the angle on the connecting part. The alignment wouldn't quite match on the ...

I've finally released a major new upgrade to the Stella line of software.

It's been over 4.5 years since the last update, and over 5.5 years since the last major release! I started too many things and it took forever to pull it all back together again and tie up all the loose ends, but finally it's ...

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.

https://www.facebook.com/Stella4D

Thanks!
Rob.

The mitre angles in Stella are calculate as follows from the dihedral angle:

mitre = 90 - (dihedral / 2)

The "/2" is because we want each wooden face to make up half the dihedral angle where they meet at an edge.

The "90 -" depends on the definition of mitre versus bevel.

Do you think this ...

Actually, that's for angles around a vertex. You might also be interested in "Nets->Show Edge Data->Dihedral Angles" and "Nets->Show Edge Data->Mitre Angles". You need a flattened or folding net view open to see the result. It shows the angles on each edge.

There was debate at some point about ...

Is this what you want?

http://i225.photobucket.com/albums/dd237/RobertCWebb/Polyhedra/SnubCube.png

You can see this by using "Display->Show Vertex Angles" and then selecting a vertex with Ctrl+Right-click. The yellow angles are what you want, if I've followed what you're asking. These are the ...

Hi Dwight,

If anyone has videos involving Stella, this forum would be the perfect place for them. I've only made one video so far, but it was quite an advanced one. You can find it here:

http://www.youtube.com/watch?v=iEip2c10RE0

Sometime I hope to make a bunch of videos about using Stella, if ...