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 Post subject: Half Turn Cube
PostPosted: Sun Jan 17, 2010 11:29 am 
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Hi Twisty Puzzle fans,

Half Turn Cube is a Rubik's Cube that only allows half turns. This makes it a different puzzle that is easier to solve. It is an idea by Takafumi Haseda, first designed and prototyped by Hidetoshi Takeji in 2007. Hidetoshi posted his version at the Twisty Puzzles Forum. I received permission from the inventors to replicate the puzzle and to offer it for sale at my Shapeways Shop.

Watch the You Tube clip.
Buy the puzzle at Shapeways.
Read at the Shapeways Forum.
Check out the photos below.

Enjoy!

Oskar
Attachment:
File comment: Half Turn Cube
Half Turn Cube v2 - prototype - view 1.jpg
Half Turn Cube v2 - prototype - view 1.jpg [ 46.13 KiB | Viewed 2327 times ]

Attachment:
File comment: After a quarter turn, you cannot turn any of the other faces
Half Turn Cube v2 - prototype - view 2.jpg
Half Turn Cube v2 - prototype - view 2.jpg [ 47.01 KiB | Viewed 2327 times ]

Attachment:
File comment: Half Turn Cube scrambled by making only half turns (180 degrees)
Half Turn Cube v2 - prototype - view 3.jpg
Half Turn Cube v2 - prototype - view 3.jpg [ 43.16 KiB | Viewed 2327 times ]

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 Post subject: Re: Half Turn Cube
PostPosted: Sun Jan 17, 2010 11:40 am 
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Joined: Thu Apr 16, 2009 7:52 am
Location: Caister on sea, Norfolk, England
I do this with my cube evey so often. I'm glad that a mechanism has been created that allows this to be the case. Well done :)

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 Post subject: Re: Half Turn Cube
PostPosted: Sun Jan 17, 2010 1:25 pm 
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Joined: Sat Jul 11, 2009 1:09 pm
Location: My House
Nice puzzle. :D Sometimes I just do half turns because it's easier. :D

Alex

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 Post subject: Re: Half Turn Cube
PostPosted: Sun Jan 17, 2010 2:20 pm 
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Joined: Sun Dec 06, 2009 9:00 am
i do this all the time with my normal 3x3 i think its a lot like a whole different puzzle. i also like to do this with my 4x4. i wonder?


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 Post subject: Re: Half Turn Cube
PostPosted: Sun Jan 17, 2010 7:22 pm 
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Joined: Sat Oct 17, 2009 7:44 am
Location: In Rubik's World!
:shock: Great puzzle!!! Now I understand the mech after loking at the pics. It isn't really that complicated. :P

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 Post subject: Re: Half Turn Cube
PostPosted: Sun Jan 17, 2010 10:17 pm 
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Joined: Tue Jun 16, 2009 11:43 am
great cube
not hard to solve ^^

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 Post subject: Re: Half Turn Cube
PostPosted: Sun Jan 17, 2010 10:43 pm 
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Joined: Wed Jun 24, 2009 1:40 pm
Location: Ho Chi Minh City, Viet Nam
nice puzzle, Oskar!!


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 Post subject: Re: Half Turn Cube
PostPosted: Mon Jan 18, 2010 11:57 am 
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Joined: Mon Aug 02, 2004 7:03 am
Location: Koblenz, Germany
Well done, BUT
you have used the wrong shape :wink:
This puzzle needs to have the shape of a tetrahedron so we get a true (because non-shape-changing) edgeturning tetrahedron.


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 Post subject: Re: Half Turn Cube
PostPosted: Mon Jan 18, 2010 12:45 pm 
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Location: Somewhere Else
Oskar, it looks like the difference in size between the various cuts is not very much... do the overhangs sufficiently block the puzzle enough?


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 Post subject: Re: Half Turn Cube
PostPosted: Mon Jan 18, 2010 1:46 pm 
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Jared,

The size difference (overhang) is 1.5 and 3.0 mm. And yes, that is sufficient to block the puzzle. When you force it, it is like forcing a misalligned Rubik's Cube. It blocks and with excessive force pieces may jump out.

Oskar


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