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 Post subject: Knotsplosion by OSKAR
PostPosted: Sun Sep 01, 2013 5:02 am 
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Hi Non-Twisty Puzzles fans,

Knotsplosion is a put-together puzzle with three identical cubic looped pieces. When assembled, the three loops intersect at four point. The puzzle disassembles first in a smooth coordinated motion. However, the real puzzle is then to get the pieces free from each other. The assembly poses the opposite, even harder problem.

Surprisingly, Knotsplosion is a spin-off of the Hurly Burly puzzle. Hurly Burly has three loop-shaped piece that are black, green and blue. They fit together in an unexpected topological fashion that allows them to be taken apart. When I discovered this topology on my computer screen in May 2005, I built a cubic model of centicubes. I was quite surprised to find out that even the cubic version was hard to put together or take apart, even though there were just three identical loopy pieces. Tom Lensch made some big wooden samples and Hanayama even made a metal prototype in 2007, which was too delicate unfortunately. At the request of a customer of mine, I am now making it available via Shapeways.

Watch the YouTube video.
Buy the puzzle at my Shapeways Shop.
Read more at the Shapeways Forum.
Check out the photos below.

Enjoy!

Oskar
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 Post subject: Re: Knotsplosion by OSKAR
PostPosted: Sun Sep 01, 2013 11:12 am 
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Wow! I don't know how you think of these incredible puzzles! Please keep blowing my mind.

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 Post subject: Re: Knotsplosion by OSKAR
PostPosted: Sun Sep 01, 2013 1:33 pm 
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Trigonal bipyramid symmetry?

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 Post subject: Re: Knotsplosion by OSKAR
PostPosted: Sun Sep 01, 2013 10:12 pm 
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Joined: Mon Aug 18, 2008 10:16 pm
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Hanayama made a prototype? Wow! Do you have a picture of that one?


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 Post subject: Re: Knotsplosion by OSKAR
PostPosted: Fri Sep 06, 2013 8:34 am 
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Jared wrote:
Hanayama made a prototype? Wow! Do you have a picture of that one?
Attachment:
Knotsplosion-Hanayama---view-1.jpg
Knotsplosion-Hanayama---view-1.jpg [ 36.05 KiB | Viewed 983 times ]

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 Post subject: Re: Knotsplosion by OSKAR
PostPosted: Fri Sep 06, 2013 11:40 am 
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Joined: Sun Oct 30, 2005 1:30 pm
Location: bay area, california
Oskar,
it looks from the shape ways model that you've added material around the junction points of these burrs, something that isn't in the hanayama or Tom Lensch version... Curious why?


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 Post subject: Re: Knotsplosion by OSKAR
PostPosted: Fri Sep 06, 2013 12:00 pm 
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Derek Bosch wrote:
... you've added material around the junction points of these burrs, ... why?
Strength.

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 Post subject: Re: Knotsplosion by OSKAR
PostPosted: Fri Sep 06, 2013 12:45 pm 
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Location: bay area, california
ok, I hadn't noticed you had made the 45 degree section larger as well.

cool puzzle, btw! I have one of Tom's...


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 Post subject: Re: Knotsplosion by OSKAR
PostPosted: Fri Sep 06, 2013 8:23 pm 
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Thank you for the picture! I take it that they are unlikely to attempt the puzzle again, even with the new design you made?


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 Post subject: Re: Knotsplosion by OSKAR
PostPosted: Fri Sep 06, 2013 9:47 pm 
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Joined: Sat Apr 22, 2000 2:51 am
Location: New Ulm, Minnesota, USA
I love this puzzle. IMHO: It wold look better in gold, silver and bronze for each piece.

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 Post subject: Re: Knotsplosion by OSKAR
PostPosted: Sat Sep 07, 2013 1:47 am 
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Jared wrote:
I take it that they are unlikely to attempt the puzzle again, even with the new design you made?
Hanayama's are take-apart puzzles. This one is more a put-together puzzle.

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