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 Post subject: Compound Fracture: Video and shop links added
PostPosted: Tue Jul 05, 2011 9:38 pm 
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Hello Puzzlers,

I'm pleased to introduce my next puzzle, the Compound Fracture. As you can guess from the name, Compound Fracture is a relative of the Fracture-10 puzzle, but this time with an extra twist. I made a slight change to the geometry to allow 45 degree turns, which subsequently allows edge and center pieces to exchange positions.

Here are a few photos of the Compound Fracture:
Attachment:
Compound Fracture.JPG
Compound Fracture.JPG [ 193.5 KiB | Viewed 2190 times ]
Attachment:
Compound Fracture 180 turn.JPG
Compound Fracture 180 turn.JPG [ 199.19 KiB | Viewed 2190 times ]
Attachment:
Compound Fracture 45 turn.JPG
Compound Fracture 45 turn.JPG [ 204.2 KiB | Viewed 2190 times ]
Attachment:
Compound turn 1.JPG
Compound turn 1.JPG [ 208.54 KiB | Viewed 2190 times ]
Attachment:
Compound turn 2.JPG
Compound turn 2.JPG [ 202.89 KiB | Viewed 2190 times ]

Can anyone guess what change to the geometry was made to allow the 45 degree turns?

Enjoy!
Dave

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Last edited by David Pitcher on Thu Jul 07, 2011 7:33 am, edited 1 time in total.

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 Post subject: Re: Compound Fracture
PostPosted: Wed Jul 06, 2011 9:50 am 
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Very nice puzzle, I love seeing all of your great designs. Keep it up!

Chris

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 Post subject: Re: Compound Fracture
PostPosted: Wed Jul 06, 2011 10:33 am 
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Wow that's cool, I don't know, but I would see this puzzle mass produce :P .

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 Post subject: Re: Compound Fracture
PostPosted: Wed Jul 06, 2011 12:51 pm 
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David Pitcher wrote:
Can anyone guess what change to the geometry was made to allow the 45 degree turns?
My guess: You changed the solid from a pentagonal dipyramid to a square dipyramid. I guess this because you do not show a photo directed on the tips of the pyramid.

Well done.


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 Post subject: Re: Compound Fracture
PostPosted: Wed Jul 06, 2011 2:37 pm 
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Andreas Nortmann wrote:
David Pitcher wrote:
Can anyone guess what change to the geometry was made to allow the 45 degree turns?
My guess: You changed the solid from a pentagonal dipyramid to a square dipyramid. I guess this because you do not show a photo directed on the tips of the pyramid.

Well done.

that's impossible, otherwise opposite cuts would be parallel.
my guess is that it's either been made hexagonal, or the proportions of the dipyramid have been changed to allow this. (then again, neither seems too plausible...)

it looks wonderful!

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 Post subject: Re: Compound Fracture
PostPosted: Wed Jul 06, 2011 3:02 pm 
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The only way to do this would be increasing the number of axes. I'll guess it's now 7 instead of 5 because Monopoly said 6 already. Or it's still 5 but two of them can't rotate and it's an irregular hexagon.

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 Post subject: Re: Compound Fracture
PostPosted: Thu Jul 07, 2011 1:42 am 
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My bet is a hexagonal dipyramid. That puzzle looks awesome! Will you be offering it on Shapeways?

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 Post subject: Re: Compound Fracture
PostPosted: Thu Jul 07, 2011 7:32 am 
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It certainly didn't take long for you to home in on the answer! Hopefully the video and the photo below explain everything clearly enough.
Attachment:
Compound Fracture vertex view.JPG
Compound Fracture vertex view.JPG [ 179.01 KiB | Viewed 1801 times ]

I was thinking of calling this puzzle "Starburst" because of the fact that in the vertex view it appears as if the star shape is bursting open on one tip.

Compound Fracture is now available from my Shapeways shop.

Enjoy!
Dave

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 Post subject: Re: Compound Fracture: Video and shop links added
PostPosted: Thu Jul 07, 2011 11:25 am 
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Grr... Irregular geometry... :evil:

I believe that the name 'Starburst' is already taken on a shape mod of the Dino Dodecahedron by Danny (I can't remember his username).

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 Post subject: Re: Compound Fracture: Video and shop links added
PostPosted: Thu Jul 07, 2011 2:17 pm 
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Are stickers 1 and 2 on two seperate parts?

Attachment:
CompoundFracture.jpg
CompoundFracture.jpg [ 74.48 KiB | Viewed 1694 times ]


It appears to me these wouldn't be separable. If that is the case may I ask why you used two stickers here?

Carl

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 Post subject: Re: Compound Fracture: Video and shop links added
PostPosted: Thu Jul 07, 2011 3:26 pm 
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wwwmwww wrote:
Are stickers 1 and 2 on two seperate parts?
Stickers 1 and 2 are actually both on the core of the puzzle, along with their mirrors on the other side and other vertex, as well as the black stickers in the central crease. I used two stickers for a few reasons. First, I wanted to make creating the sticker pattern as easy as possible by minimizing variants. Second, I wanted to be able to place the colors after receiving the stickers, and not be locked into having certain colors at the "ends". Last, I think it looks better to retain the aesthetics of the sticker pattern on the "incomplete" sides.

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 Post subject: Re: Compound Fracture
PostPosted: Thu Jul 07, 2011 3:39 pm 
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PuzzleMaster6262 wrote:
The only way to do this would be increasing the number of axes. I'll guess it's now 7 instead of 5 because Monopoly said 6 already. Or it's still 5 but two of them can't rotate and it's an irregular hexagon.

I was right :lol:

HAve you tried solving it yet? Even with only 4 axes it looks like a beast!

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 Post subject: Re: Compound Fracture: Video and shop links added
PostPosted: Thu Jul 07, 2011 5:23 pm 
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I could solve that :D Well, if you allow me to use a large number of simians and a huge length of time.

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 Post subject: Re: Compound Fracture: Video and shop links added
PostPosted: Fri Jul 08, 2011 7:53 am 
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David Pitcher wrote:
HAve you tried solving it yet? Even with only 4 axes it looks like a beast!
I haven't scrambled the puzzle fully since I put the stickers on. Prior to stickering, it was a good challenge just to get it back to it's proper shape. Given that, and how difficult Fracture-10 was to solve (talk about a beast!), I'm not going to scramble Compound Fracture until I have a good amount of time to dedicate to solving. Of course, if anyone else wants to give it a try, the puzzle is available in my shop :D

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