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 Post subject: Timur's Gear Corner Turning Octahedron
PostPosted: Wed Jun 06, 2012 2:49 am 
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Joined: Mon Mar 22, 2010 7:00 am
Location: Germany, Siegerland
Hi!

Some time ago I made 2 sketches of Gear Corner Turning Octahedron and asked the community what version they'd prefer to be built. Most said that the one with central face elements would be better. So, here it is.

All gears (corners and edges) have the same angular diameter and 8 teeth, but due to their different nature they turn differently. The geared basement under the moving layer has 20 teeth, so after one full turn-around all involved gears flip by 180°. This repeated again, brings the puzzle to the original state.

This design has a deep and secure gears interconnection and never skips gears (at least I could not do this when I intentionally tried).

The model is available at my Shapeways shop: http://www.shapeways.com/model/519286/

YouTube VIDEO

Attachment:
File comment: Solved
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ALIM4138.JPG [ 170.62 KiB | Viewed 2957 times ]

Attachment:
File comment: After one turn
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ALIM4140.JPG [ 129.59 KiB | Viewed 2957 times ]

Attachment:
File comment: After 2 turns
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ALIM4141.JPG [ 139.19 KiB | Viewed 2957 times ]

Attachment:
File comment: After 4 turns (full turnaround)
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ALIM4143.JPG [ 173.69 KiB | Viewed 2957 times ]

Attachment:
File comment: Scrambled with 3 turns
ALIM4142.JPG
ALIM4142.JPG [ 140 KiB | Viewed 2957 times ]

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 Post subject: Re: Timur's Gear Corner Turning Octahedron
PostPosted: Wed Jun 06, 2012 3:53 am 
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Location: Jarrow, England
This must surely be a candidate for mass production? It seems to turn perfectly in the video, well done Timur.

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 Post subject: Re: Timur's Gear Corner Turning Octahedron
PostPosted: Wed Jun 06, 2012 3:56 am 
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Joined: Sun May 30, 2010 5:29 pm
Location: England
Beautiful, this is really cool.
Gear puzzles are some of my favourite.

Robert

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 Post subject: Re: Timur's Gear Corner Turning Octahedron
PostPosted: Wed Jun 06, 2012 5:23 am 
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Joined: Sun Feb 20, 2011 5:14 pm
Location: Hertfordshire, UK
That looks brilliant! Nicely done as always Timur!

Fingers crossed this one makes it to mass production as I'd love to own one.

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 Post subject: Re: Timur's Gear Corner Turning Octahedron
PostPosted: Wed Jun 06, 2012 6:04 am 
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Oh! From the original sketches, I thought that this design was just a variant shape of the Gear Cube. I'm glad that I was wrong! :)


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 Post subject: Re: Timur's Gear Corner Turning Octahedron
PostPosted: Wed Jun 06, 2012 6:25 am 
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Joined: Mon Mar 30, 2009 5:13 pm
Wow, beautiful! This is by far my favourite gear puzzle. I love the super high symmetry and that all the gears are similar size and shape, they remind me of suns. I also love how the shape becomes very confusing as it scrambles, and yet all moves remain possible (I don't like jumbling puzzles). And finally, it turns so well. Truly a perfect puzzle in every respect!

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 Post subject: Re: Timur's Gear Corner Turning Octahedron
PostPosted: Wed Jun 06, 2012 11:40 am 
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Joined: Mon Aug 02, 2004 7:03 am
Location: Koblenz, Germany
Beautiful puzzle.
Beautiful images.
Beautiful entry descriptions: http://twistypuzzles.com/cgi-bin/puzzle.cgi?pkey=3313

The descriptions for the museum are one week older than this thread. What happened?

Can you add edge length and weight of this beauty?


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 Post subject: Re: Timur's Gear Corner Turning Octahedron
PostPosted: Wed Jun 06, 2012 1:54 pm 
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Location: Somewhere Else
KelvinS wrote:
they remind me of suns


Hmm, maybe that could be the basis for a more creative name for the puzzle - "Sun Star" (after the Star Puzzler name for the original CTO) or something.

Of course, it's up to Timur. :)


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 Post subject: Re: Timur's Gear Corner Turning Octahedron
PostPosted: Wed Jun 06, 2012 2:50 pm 
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Location: Copenhagen, Denmark
Very nice puzzle! I would very much like to own one!
Are you gonna make the other variant too?

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 Post subject: Re: Timur's Gear Corner Turning Octahedron
PostPosted: Wed Jun 06, 2012 5:15 pm 
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Location: Missouri
Timur wrote:
All gears (corners and edges) have the same angular diameter and 8 teeth, but due to their different nature they turn differently.
I haven't seen the video yet... I'll check it out tonight. But it almost looks like its possible to make a mixup version of this puzzle. If you could turn two opposite corners by 45 degrees it would appear that the corners and the edges had changed places along the slice layer. I'm guessing the puzzle doesn't actually allow this... does it? If it did this puzzle would be very closely related to Oskar's Geared Mixup puzzle yet still not quite the same.

If this doesn't allow for Mixup moves do you think that is a feature you could add in the future?

Carl

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 Post subject: Re: Timur's Gear Corner Turning Octahedron
PostPosted: Wed Jun 06, 2012 7:37 pm 
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Joined: Thu Sep 24, 2009 12:21 pm
Location: Chichester, England
Absolutely stunning. By far my favourite gear puzzle, and I really hope I can own this soon (whether that will be through Shapeways or mass production :wink:). Great stuff.

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 Post subject: Re: Timur's Gear Corner Turning Octahedron
PostPosted: Thu Jun 07, 2012 2:43 am 
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Joined: Sun Sep 26, 2004 8:04 am
Location: exeter,england
Looks great and it's nice to see non-trivial tips,I hope it will be mass produced.


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 Post subject: Re: Timur's Gear Corner Turning Octahedron
PostPosted: Sat Jun 09, 2012 3:37 am 
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Wow, again a great gearing puzzle. Keep 'm coming!

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 Post subject: Re: Timur's Gear Corner Turning Octahedron
PostPosted: Sat Jun 09, 2012 5:21 am 
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Joined: Mon Mar 22, 2010 7:00 am
Location: Germany, Siegerland
Andreas Nortmann wrote:
The descriptions for the museum are one week older than this thread. What happened?
Can you add edge length and weight of this beauty?
Publishing the puzzle in the museum takes some time so why not do it a week earlier? :) Not sure about the weight, I think it's 100-150g, but the edge length is 60 mm.
Sigurd wrote:
Are you gonna make the other variant too?
I don't know, probably! The next thing I'm going to build is a tetrahedron with the same face pattern like here (Gear Halpern-Meier Tetrahedron).
wwwmwww wrote:
But it almost looks like its possible to make a mixup version of this puzzle. If you could turn two opposite corners by 45 degrees it would appear that the corners and the edges had changed places along the slice layer. I'm guessing the puzzle doesn't actually allow this... does it?
No, it does not allow mixup turns. If you turn the very middle layer (the one with 8 gears) by 45 degrees (so that the edges and corners swap over), the indermediary layers with turn by smaller angle and will block turning aroung all other axes until you finish the turn by turning the middle layer further.

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Signed Vulcanos ($48), Pillow Pyraminxes ($22)
Come visit my Shapeways shop


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