Eitan's Face-Turning Rhombic Dodecahedron (Now with Video!)

pirsquared · **Posted:** Sun Nov 08, 2009 10:20 pm

Here it is! I alluded to it in this thread.

I've been working on this for the last month. Enjoy!

VIDEO

Any comments are welcome.

-π (Eitan)

MaxXimum13 · **Joined:** Mon Jul 20, 2009 9:36 pm

Such a nice puzzle, I can not wait for the video.

USCuber360 · **Joined:** Sun Nov 01, 2009 5:28 pm

extremely nice build loving it how does it turn

pirsquared · **Posted:** Sun Nov 08, 2009 10:31 pm

MaxXimum13 wrote:

Such a nice puzzle, I can not wait for the video.

USCuber360 wrote:

extremely nice build loving it how does it turn

Thanks!

It locks up somewhat often, but otherwise, it turns better than anything I've ever built.

-π (Eitan)

TheCube · **Posted:** Sun Nov 08, 2009 11:17 pm

as the mechanism similar at all to the toru?

toru- viewtopic.php?f=15&t=9956&hilit=toru

eye2eye · **Posted:** Sun Nov 08, 2009 11:25 pm

This is beautiful!
We really need a colorado meet up

Muffet · **Posted:** Sun Nov 08, 2009 11:32 pm

TheCube wrote:

as the mechanism similar at all to the toru?

toru- viewtopic.php?f=15&t=9956&hilit=toru

I believe it is more closely related to The Rua puzzle.

http://twistypuzzles.com/forum/viewtopic.php?f=15&t=10246

Garrett · **Posted:** Sun Nov 08, 2009 11:52 pm

Very nice job! Was a layered mechanism used?

can't wait to see the video

Jin H Kim · **Posted:** Mon Nov 09, 2009 12:24 am

Fantastic work. Given that it's *just* a "simple" face turning rhombic dodecahedron, I imagine that you only needed a twelve armed spider with centers holding the shallow faces. And even if it is true that the geometry of the design seems to make jumbling almost inevitable, I still have to say I love the design.

elijah · **Joined:** Sat Mar 29, 2008 12:55 am **Location:** WA, USA

could we get a size comparison?
I'd really like to know the size of this thing!

Sven · **Posted:** Mon Nov 09, 2009 6:55 am

Great puzzle!
The FTRD? :mrgreen:

Clay n Eva Creations · **Joined:** Sun Dec 14, 2008 9:17 pm

Sven wrote:

The FTRD?

Yea, why not?

Drew gets the DRDV2.

Jared · **Posted:** Mon Nov 09, 2009 11:45 am

Was this based off the previously posted design?

pirsquared · **Posted:** Mon Nov 09, 2009 1:34 pm

Thanks for all the comments!

Jared wrote:

Was this based off the previously posted design?

Nope. I was a little miffed when MaxXimum13 posted his design last week. It's nice to be the first to have built it, though.

Jin H Kim wrote:

Fantastic work. Given that it's *just* a "simple" face turning rhombic dodecahedron, I imagine that you only needed a twelve armed spider with centers holding the shallow faces. And even if it is true that the geometry of the design seems to make jumbling almost inevitable, I still have to say I love the design.

Thanks! Due to the geometry of the mechanism, the jumbling moves can only go so far. I'll show this in the video.

I would be interested in a mathematical analysis of this thing. (wwwmwww?)

elijah wrote:

:shock:
could we get a size comparison?
I'd really like to know the size of this thing!

Here you go:

FTRD vs. 3x3

FTRD vs. V7

-π (Eitan)

philliesrule3690 · **Joined:** Fri Feb 13, 2009 11:25 am

Wow, that is a lovely size! Beautiful work!

pirsquared · **Posted:** Mon Nov 09, 2009 4:08 pm

Here's the VIDEO

philliesrule3690 wrote:

Wow, that is a lovely size! Beautiful work!

Thanks!

-π (Eitan)

wwwmwww · **Posted:** Mon Nov 09, 2009 5:28 pm

pirsquared wrote:

I would be interested in a mathematical analysis of this thing. (wwwmwww?)

You want the number of states? Andreas Nortmann might be a better person to ask but since this thing jumbles I'm not sure that is a very easy number to get. Great looking puzzle.

Carl

elijah · **Joined:** Sat Mar 29, 2008 12:55 am **Location:** WA, USA

hmm, now if only maxx would make his version a little larger...

pirsquared · **Posted:** Mon Nov 09, 2009 5:59 pm

elijah · **Joined:** Sat Mar 29, 2008 12:55 am **Location:** WA, USA

Maxx's version is most likely unstable, and it's only the size of a 3x3, which seems too small to me, but it's the only rhombic dodecahedron available to the public, so I think I'm going to print it anyway.

PaulWozniak · **Joined:** Fri Oct 17, 2008 7:02 pm

Excellent work. That thing is a beauty!

Sjoerd · **Posted:** Tue Nov 10, 2009 7:38 am

beautiful puzzle, beautiful size, beautiful rotation! And I imagine it to be quite difficult too!

Leslie Le · **Posted:** Tue Nov 10, 2009 9:31 pm

Being it a three layered FTRD, I can't agree more.

Jin H Kim wrote:

Fantastic work. Given that it's *just* a "simple" face turning rhombic dodecahedron, I imagine that you only needed a twelve armed spider with centers holding the shallow faces. And even if it is true that the geometry of the design seems to make jumbling almost inevitable, I still have to say I love the design.

Garrett · **Posted:** Wed Nov 11, 2009 5:12 am

Eitan, you must show the mechanism! I'm curious about how you were able to do this (presumably without a layered mechanism).

Sigurd · **Posted:** Wed Nov 11, 2009 9:58 am

amazing turning quality! great work! please make some for us!

in BLACK plastic :twisted:

pirsquared · **Posted:** Wed Nov 11, 2009 11:06 am

Garrett wrote:

Eitan, you must show the mechanism! I'm curious about how you were able to do this (presumably without a layered mechanism).

There is no layered mechanism. Just check out MaxXimum13's original thread that I linked to in my first post.

Doubleyou wrote:

amazing turning quality! great work! please make some for us!

in BLACK plastic :twisted:

Sorry, but I don't make puzzles in black anymore. It stains too much!

-π (Eitan)

Eitan's Face-Turning Rhombic Dodecahedron (Now with Video!)

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