Search found 136 matches

by Ulrich
Sun Jan 16, 2011 3:23 pm
Forum: General
Topic: undesired logout
Replies: 0
Views: 13751

undesired logout

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 everything was lost! Is this a question of the properties of my own machine or is it the forum website or is there a trick other than copying everything before ...
by Ulrich
Fri Jan 14, 2011 10:41 pm
Forum: Stella Feature Requests
Topic: Colouring Snubs
Replies: 7
Views: 21808

This is how to colour a chiral polyhedron with intersecting faces, using only a few colours, where no two faces wearing the same colour, intersect. The 60 triangles of the W 114, the Inverted Snub Dodecadodecahedron can be arranged in pairs of two, sharing one common edge. The colours of these pairs...
by Ulrich
Fri Dec 24, 2010 12:51 pm
Forum: Polyhedron Models
Topic: Delicate Flower or Triffid ?
Replies: 4
Views: 20014

I made some of these vertex-connected ones, using UHU and holding two vertices near each other while counting to 100... :wink:

Ulrich
by Ulrich
Sat Dec 11, 2010 10:22 am
Forum: Polyhedron Models
Topic: Gyro expanded truncated cube
Replies: 8
Views: 25707

Alex Doskey, who is no 4 in the memberlist, has done a lot of work on the Stewart Toroids and he also deals with "Jovo Toys".

Ulrich
by Ulrich
Mon Sep 27, 2010 11:45 am
Forum: Polyhedron Models
Topic: twisted ring
Replies: 8
Views: 27447

A Moebius-style one is possible too: http://i254.photobucket.com/albums/hh82/Heinzzweidrei/mobf.jpg http://i254.photobucket.com/albums/hh82/Heinzzweidrei/mobm.jpg I made these by augmentation of 24- resp. 36-fold or 72-fold prisms by themselves and by compounds of these and 4-fold prisms. I got twis...
by Ulrich
Thu Sep 23, 2010 1:30 pm
Forum: Polyhedron Models
Topic: twisted ring
Replies: 8
Views: 27447

twisted ring

My latest stella model is a twisted ring:

Image


Image

Stel-file on request.

Ulrich
by Ulrich
Mon Jun 28, 2010 9:14 am
Forum: Polyhedron Models
Topic: How to make a compound of five rhombihexecontahedra
Replies: 0
Views: 15203

How to make a compound of five rhombihexecontahedra

This is how a compound of 5 rhombihexecontahedra (RH) can be created: http://i254.photobucket.com/albums/hh82/Heinzzweidrei/rh_hex_5.jpg The RH is made of 60 rhombs with an acute angle of 63.4349 degrees. To build it, it is suitable to create a rhombihexahedron first. You can cut off a 3-sided pyram...
by Ulrich
Wed Dec 30, 2009 11:22 am
Forum: Stella Forum
Topic: star tetrahedron
Replies: 4
Views: 15333

You load a tetrahedron and augment it with pyramids by hitting the "a"-key, chosing "augment by pyramids" and clicking "ok". The pyramids are indicated by spotted lines. Now you hit the ctrl-key and the left mouse key and pull the mouse to the right which increases the height of the pyramids to make...
by Ulrich
Tue Jun 30, 2009 6:50 am
Forum: Stella Forum
Topic: Facet vertex angles and sizes
Replies: 15
Views: 116865

...you might need to give me a step-by-step tutorial. No, you actually do need to give me that tutorial You choose the model you want to construct and you should show the vertices and edges, see http://www.software3d.com/StellaManual.php?prod=stella4D#showVE . Then you scale it to a radius of 10 (s...
by Ulrich
Mon Jun 29, 2009 12:05 pm
Forum: Stella Forum
Topic: Facet vertex angles and sizes
Replies: 15
Views: 116865

RTChoke, you can easily create little slabs and their bevels with stella4D: http://i254.photobucket.com/albums/hh82/Heinzzweidrei/Icosa_faces.jpg All you have to do is adding a polyhedron to another one of the same kind which is scaled a little smaller. Then you decrease the symmetry to that one of ...
by Ulrich
Tue Dec 09, 2008 11:08 am
Forum: Stella Forum
Topic: Christmas polyhedra?
Replies: 3
Views: 13141

Thanks! It is derived from the pentagonal dipyramid J13. You find it in
another design in my new Johnson-solid-intersecting-cylinders-gallery:
http://www.polyedergarten.de/johnson/e_target3.html
Ulrich
by Ulrich
Sun Dec 07, 2008 7:31 pm
Forum: Stella Forum
Topic: Christmas polyhedra?
Replies: 3
Views: 13141

I'd like to contribute this christmas tree bowl:

Image

Best wishes

Ulrich
by Ulrich
Thu Nov 27, 2008 3:34 pm
Forum: Stella Forum
Topic: intersecting cylinders
Replies: 8
Views: 30216

.., and of course a mention that you used Stella :) Okay. so you better use this link: http://www.polyedergarten.de/e_cylintro.htm I gave the snub dodecahedron a try with a 480-fold prism and it worked fine (the 500-fold one failed here). The stripes were there too, but that's no great problem. Ulr...
by Ulrich
Thu Nov 27, 2008 9:22 am
Forum: Stella Forum
Topic: intersecting cylinders
Replies: 8
Views: 30216

I made some pictures of the cores of intersecting cylinders, see: http://www.polyedergarten.de/intersecting_cylinders_gallery/index.html This was easily done with stella 4D by putting 500-fold prisms on the faces of uniform polyhedra or their duals. This can take a while if there are many faces. In ...
by Ulrich
Mon Nov 10, 2008 11:29 am
Forum: Stella Feature Requests
Topic: Searching for stellations
Replies: 0
Views: 12093

Searching for stellations

Robert,

I would be very thankful, if I could activate cells directly in the "face
view" window. Or if the lines in the stellation diagram view would indicate
the shapes of the "normal" cells of the regular faces (by another colour
or some thicker lines).
Would this be possible?

Ulrich