Comments on: Stellated Curved Tetrahedron

By: oschene

oschene — Tue, 13 Mar 2007 10:03:25 +0000

There will be paper left over at the edges and it will wrap into the indentations on the other piece. I find it easier to wrap the top over the bottom, but I think it will work either way.

By: Cissy

Cissy — Tue, 13 Mar 2007 03:10:37 +0000

Thomas — the hexagons turn into tetrahedron by joining two of the sides together. That makes the unit start to bend to produce the curve. I don’t have a photo, and I just made the bottom the other night for the first time. Working on the top still.

Can anyone give me a clue on how to keep the tetrahedron together?

By: thomas

thomas — Sun, 28 Jan 2007 10:18:51 +0000

any tips on the tetras?
The lines in the “bowls” are hexagons, I don’t see hot they can make the tetra.

Maybe someone can post a picture of the two halves separated. That would help.
(in 12 Megapixel, at least)!

By: Paul Hindess

Paul Hindess — Wed, 24 Jan 2007 22:41:11 +0000

PS Is gluing a good idea on these models? Or is that considered cheating?

By: Paul Hindess

Paul Hindess — Wed, 24 Jan 2007 22:38:44 +0000

Pointed in the direction of this by a kind (or perhaps malicious) brother. Having read nothing else here yet, I’m glad I decided to pre-fold all the lines and score all the curves carefully. The comments from others were helpful. I, too, came to a temporary impasse where I was saying to myself “this isn’t quite going to work without a few minor cuts”, but somehow persistence overcame this – in ways I could not possibly describe (for the benefits of others) even if I wanted to.

I also thought “how the heck do I get these two halves together” (quite some time after the thought, “wow, I’ve done it . . . but that’s only HALF the model!!” and proceded to attempt the bottom half). Getting the halves together was a matter of trying it tentatively to see how they were meant to fit and then reinforcing creases in the right direction before making a proper attempt. It seemed necessary to me to accept that some of the major folds were going to be temporarily compromised whilst trying to get one piece inside the other, but all these folds came good with patient effort.

An amazing invention this model and no doubt the result of numerous prior experiments into curved surface origami (that I will have to check out). I’m convinced that some alternative templates could be produced that might result in a final model that looks more presentable from any angle. . .

One thought that crossed my mind is it might be possible to make the same model with more than two (smaller) modules (perhaps 4 and perhaps all identical). The hope would be that these might lock together in such a way that module 1 goes partly inside module 2 which goes partly inside module 3 which goes partly inside module 4 which goes partly inside module 1. This might produce a model that naturally pulls itself together a little more (though I have to say I am surprised and impressed that even my modest attempt at this is staying together so well!!!

Thank you for an enjoyable evening’s entertainment!

(-:

By: CDS

CDS — Sat, 20 Jan 2007 21:39:56 +0000

It looks like I’m the only one who can’t figure this thing out. Anyone want to post step-by-step pics to throw me a bone?

By: Stephen Ross

Stephen Ross — Sat, 20 Jan 2007 08:17:34 +0000

oops, forgot to mention there are pics on my Xanga Photoblog:

http://photo.xanga.com/StevePoOo/albums/a3d0f504253834

By: Stephen Ross

Stephen Ross — Sat, 20 Jan 2007 08:16:37 +0000

Hey guys, I’m new to origami. In fact, this is my first attempt. How did I do?

By: gennessee

gennessee — Fri, 19 Jan 2007 14:49:23 +0000

This is lovely. I amazed myself by folding my way through most of it, but I’m stuck at how to attach the halves together. I think I may need to make additional folds to the surfaces that wind up inside the model, but I’m not sure where.

By: thomas

thomas — Fri, 19 Jan 2007 06:29:57 +0000

Wonderful, maybe 2 or 3 more pictures would help me see how you start after the creasing is done!