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  Topic: Isohedra with non-convex faces
marcelteun

Replies: 19
Views: 34244

PostForum: Polyhedra   Posted: Mon Jul 19, 2010 8:18 pm   Subject: Isohedra with non-convex faces
Haven't been around for a while and look so many posts. And I thought that I would receive mail. I guess I have to check my settings.

Anyway. Just wanted to say 1 thing here.
I share your love f ...
  Topic: Compounds of Cubes & Tetrahedra
marcelteun

Replies: 7
Views: 19351

PostForum: Polyhedra   Posted: Wed Feb 10, 2010 8:28 am   Subject: Compounds of Cubes & Tetrahedra
Last monday I was sick: I was lying in bed staring at my models of compounds of cubes and my mind wandered off. I thought that there should be a compound of containing 5 times a compound of six cubes ...
  Topic: Tintin-R
marcelteun

Replies: 1
Views: 7347

PostForum: Polyhedra   Posted: Sat Feb 06, 2010 11:37 am   Subject: Tintin-R
Hi,

My 4 year old son asked me to create a rocket polyhedron. I though I would share it with you.

Wink

http://i248.photobucket.com/albums/gg194/stellatum/tintin-rocket.jpg
  Topic: Do you ever make polyhedra for other people?
marcelteun

Replies: 7
Views: 17919

PostForum: Polyhedra   Posted: Sat Jan 30, 2010 2:29 pm   Subject: Do you ever make polyhedra for other people?
Very Happy I don't think I will build this one again, except perhaps to keep a version for myself anyway... Wink
In this thread:
http://software3d.com/Forums/viewtopic.php?p=242#242
There is a link to ...
  Topic: Do you ever make polyhedra for other people?
marcelteun

Replies: 7
Views: 17919

PostForum: Polyhedra   Posted: Thu Jan 21, 2010 11:29 pm   Subject: Do you ever make polyhedra for other people?
Actually I give quite many nowadays. It is difficult sometimes, but what if I have everything at home and a fire breaks out?...
On the other hand I do miss some of them as well. Here is one example: ...
  Topic: Paper model choices. Scissors/knife? Single/double tabs? etc
marcelteun

Replies: 24
Views: 151632

PostForum: Polyhedron Models   Posted: Fri Feb 29, 2008 10:58 am   Subject: Paper model choices. Scissors/knife? Single/double tabs? etc

What does everyone else use for hole poking? I go through needles pretty fast, and I'm pretty sick of hot gluing them to sticks...

I actually bought a special tool a long time ago. I guess it wa ...
  Topic: Paper model choices. Scissors/knife? Single/double tabs? etc
marcelteun

Replies: 24
Views: 151632

PostForum: Polyhedron Models   Posted: Fri Feb 29, 2008 10:18 am   Subject: Paper model choices. Scissors/knife? Single/double tabs? etc
A few days ago I got the following question:
I'm curious about materials and methods others use. I came across your website so I saw pictures of yours. One thing you must know after making models i ...
  Topic: Compounds of cubes
marcelteun

Replies: 8
Views: 20476

PostForum: Polyhedra   Posted: Fri Feb 29, 2008 9:55 am   Subject: Compounds of cubes

BTW Thanks for mentioning this, I found a typo on my webpage at http://www.tunnissen.eu/polyh/cubecmps.vrml.html#12A.S4xI.C2xI

Just want to mention that I fixed this
  Topic: Compounds of cubes
marcelteun

Replies: 8
Views: 20476

PostForum: Polyhedra   Posted: Mon Feb 25, 2008 9:19 am   Subject: Compounds of cubes
Yes, it seems that the same holds for http://i248.photobucket.com/albums/gg194/stellatum/A5xI_C2xI_30Amu9.png
http://i248.photobucket.com/albums/gg194/stellatum/A5xI_C2xI_30Bmu3.png
  Topic: Compounds of cubes
marcelteun

Replies: 8
Views: 20476

PostForum: Polyhedra   Posted: Mon Feb 25, 2008 3:08 am   Subject: Compounds of cubes
Well, if by this you mean that one compound is obtained from the other by simultaneously rotating the four groups of three cubes about their common axes of symmetry through an angle pi/12, then you've ...
  Topic: Compounds of Cubes & Tetrahedra
marcelteun

Replies: 7
Views: 19351

PostForum: Polyhedra   Posted: Sun Feb 24, 2008 11:48 am   Subject: Compounds of Cubes & Tetrahedra
C6_E_6.eg.off
...
Mean anything to you?

Sure, it was me who named all of them (but it was a while ago that I worked with this set and apparently I didn't have the last version on my site before) ...
  Topic: Compounds of Cubes & Tetrahedra
marcelteun

Replies: 7
Views: 19351

PostForum: Polyhedra   Posted: Sat Feb 23, 2008 6:35 am   Subject: Compounds of Cubes & Tetrahedra
Thanks for your feed back Rob!
I put a new file with compounds of tetrahedra [url=http://www.tunnissen.eu/polyh/TetrahedraCompounds.off.zip]there with new versions of A5xI_C3_40.eg.off. and S4xI_D2C2 ...
  Topic: Compounds of cubes
marcelteun

Replies: 8
Views: 20476

PostForum: Polyhedra   Posted: Thu Feb 21, 2008 8:38 am   Subject: Compounds of cubes
The first model you show is a special position of 12A | S4 x I / C2 x I | μ , for which μ = acos(1/√3) such that it can be divided into 3 x 4 | D12 x I / D3 x I or into 4 x 3 | D12 x ...
  Topic: Compounds of cubes
marcelteun

Replies: 8
Views: 20476

PostForum: Polyhedra   Posted: Wed Feb 20, 2008 11:57 am   Subject: Compounds of cubes
that someone actually went to the trouble of calculating (apparently without the benefit of a computer) and building paper models of all the figures

That is indeed amazing. The PC brought us many g ...
  Topic: Paper model choices. Scissors/knife? Single/double tabs? etc
marcelteun

Replies: 24
Views: 151632

PostForum: Polyhedron Models   Posted: Tue Feb 19, 2008 1:46 pm   Subject: Paper model choices. Scissors/knife? Single/double tabs? etc
I considered squeezing layers together a long time ago, but I was a bit afraid that this would be too inaccurate, in case you don't keep your needle or knife straight.
Do you experience problem with ...
 
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