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 Post subject: Gemstone I (Deep-cut FTHD)
PostPosted: Sat Dec 07, 2013 1:20 am 
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Hey guys,
Today I'm really excited to start my new series of Gemstone puzzles! This series will consist of deep-cut, face-turning dipyramids, which shall go in order from least-complex to most-complex mechanism. :)

I'll start with this one: The Gemstone I!
VIDEO
Attachment:
File comment: Gemstone I: View 1
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DSC00366.JPG [ 1.28 MiB | Viewed 1790 times ]

Attachment:
File comment: Gemstone I: View 2
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DSC00367.JPG [ 1.5 MiB | Viewed 1790 times ]

This is the first in the series, a deep-cut face-turning hexagonal dipyramid.
The puzzle can turn and stop at 2 different points, where other turns can be made:
Attachment:
File comment: Gemstone I: Stop 1
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DSC00370.JPG [ 1.29 MiB | Viewed 1790 times ]

Attachment:
File comment: Gemstone I: Turn 1
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DSC00371.JPG [ 1.27 MiB | Viewed 1790 times ]

Attachment:
File comment: Gemstone I: Stop 2
DSC00372.JPG
DSC00372.JPG [ 1.28 MiB | Viewed 1790 times ]

Attachment:
File comment: Gemstone I: Turn 2
DSC00373.JPG
DSC00373.JPG [ 1.29 MiB | Viewed 1790 times ]

This is a jumbling only puzzle, due to it's axis system. This leads to some rather interesting scrambling... :shock:
Attachment:
File comment: Gemstone I: Scrambled 1
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DSC00374.JPG [ 1.25 MiB | Viewed 1790 times ]

Attachment:
File comment: Gemstone I: Scrambled 2
DSC00375.JPG
DSC00375.JPG [ 1.28 MiB | Viewed 1790 times ]

This is, by far, the best turning twisty puzzle I have ever made (I think the video speaks for itself). It even cuts corners a bit as shown.
EDIT: (For Andreas) The puzzle is 50mm to an edge on the horizontal edges, and 71mm on the vertical edges.

Here's 2 questions (repeated throughout this series) for the experts:
1. Why did I choose this particular shape of hexagonal dipyramid?
2. What other puzzle is this one's axis system based on?

Enjoy!

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 Post subject: Re: Gemstone I (Deep-cut FTHD)
PostPosted: Sat Dec 07, 2013 1:55 am 
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Wow! This is great! Very good idea, and it seems perfect in execution!
Nice!

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 Post subject: Re: Gemstone I (Deep-cut FTHD)
PostPosted: Sat Dec 07, 2013 3:00 am 
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I think David Pitcher did a magnetic edge turning hexagonal dipyramid, which is basically a shapemod of this. Am I right?

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 Post subject: Re: Gemstone I (Deep-cut FTHD)
PostPosted: Sat Dec 07, 2013 5:42 am 
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Very nice puzzle it is! Seems very hard to solve. There'll be a series of them huh?


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 Post subject: Re: Gemstone I (Deep-cut FTHD)
PostPosted: Sat Dec 07, 2013 11:58 am 
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rubikcollector123 wrote:
I think David Pitcher did a magnetic edge turning hexagonal dipyramid, which is basically a shapemod of this. Am I right?

Not quite. They are differently shaped hexagonal dipyramids, with a different axis system. :)

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 Post subject: Re: Gemstone I (Deep-cut FTHD)
PostPosted: Sat Dec 07, 2013 3:02 pm 
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This is a great puzzle, and the turning is almost speedcube quality! Great design, and this definitely seems like a good puzzle to mass produce...but then again, none of the puzzles I ever want get mass produced. :( I think that this puzzle is based off of more madness or deeper madness, because both are jumbling-only puzzles.

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 Post subject: Re: Gemstone I (Deep-cut FTHD)
PostPosted: Sat Dec 07, 2013 6:54 pm 
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Very nice! I'm curious how well you can scramble it, it seems that lots of bandaging occurs.

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 Post subject: Re: Gemstone I (Deep-cut FTHD)
PostPosted: Sun Dec 08, 2013 3:21 am 
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benpuzzles wrote:
EDIT: (For Andreas) The puzzle is 50mm to an edge on the horizontal edges, and 71mm on the vertical edges.
Thank you.
benpuzzles wrote:
Here's 2 questions (repeated throughout this series) for the experts:
1. Why did I choose this particular shape of hexagonal dipyramid?
2. What other puzzle is this one's axis system based on?

As I am not afraid to make a fool of myself:
1. Otherwise you would have got less cuts.
2. I would be equivalent to a deepcut corner turning triangular prism. "Jumble Prism" would be my guess.

Andreas


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 Post subject: Re: Gemstone I (Deep-cut FTHD)
PostPosted: Sun Dec 08, 2013 9:11 am 
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Yay :D I love series of puzzles :D

And you are right. I would say this is on of the best turning Shapeways puzzles i have ever seen. How much have it been broken in?

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 Post subject: Re: Gemstone I (Deep-cut FTHD)
PostPosted: Sun Dec 08, 2013 12:57 pm 
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Andreas Nortmann wrote:
As I am not afraid to make a fool of myself:
1. Otherwise you would have got less cuts.

I guess I should have worded it differently. There are many differently shaped hexagonal dipyramids I could have chosen, with different dihedral angles. I'm asking why I chose this particular HD, with specific dihedral angles. The correct answer is because of the mechanism that was used.
Andreas Nortmann wrote:
2. I would be equivalent to a deepcut corner turning triangular prism. "Jumble Prism" would be my guess.

That answer is 100% correct, as I actually designed the HD around a triangular prism!
Jakob wrote:
I would say this is on of the best turning Shapeways puzzles I have ever seen. How much have it been broken in?

Interestingly enough, I would actually consider this a bad print (it had several print flaws, such as bubbling up on some surfaces and even some slight shifting). If it were a good print, I could only imagine how well it would turn!
martywolfman wrote:
Very nice! I'm curious how well you can scramble it, it seems that lots of bandaging occurs.

I actually feared of this problem with this puzzle. But luckily, I have managed to truly scramble it:
Attachment:
DSC00380.JPG
DSC00380.JPG [ 1.64 MiB | Viewed 1293 times ]

As you can see, the puzzle is back in its original shape, but some pieces are on different faces.
Scrambled even more...
Attachment:
DSC00383.JPG
DSC00383.JPG [ 1.71 MiB | Viewed 1293 times ]

Fortunately, it looks like the Gemstone II should be easier to scramble.

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 Post subject: Re: Gemstone I (Deep-cut FTHD)
PostPosted: Sun Dec 08, 2013 2:27 pm 
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Are all of these deep cut, or do they get shallower cuts as the series goes on, like the reverse of the radiolarian series?

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 Post subject: Re: Gemstone I (Deep-cut FTHD)
PostPosted: Sun Dec 08, 2013 2:28 pm 
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BelcherBoy2000 wrote:
Are all of these deep cut, or do they get shallower cuts as the series goes on, like the reverse of the radiolarian series?

No. They are all deep-cut, face-turning dipyramids, just with different numbers of faces. :D

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 Post subject: Re: Gemstone I (Deep-cut FTHD)
PostPosted: Tue Dec 10, 2013 3:45 pm 
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Beautiful puzzle! I really like the "less sharp" version of the hexagonal dipyramid that you've found. Are you going to make this available in your Shapeways shop?

When I was making the Shallower Madness and Edge of Insanity puzzles, I had also considered an origin-sliced version, tentatively titled "Original Madness":
Attachment:
original madness.jpg
original madness.jpg [ 51.3 KiB | Viewed 1087 times ]
Looking at the Gemstone I, it seems that it is essentially the Original Madness concept, truncated at the three sharp vertices:
Attachment:
original madness truncated.jpg
original madness truncated.jpg [ 54.88 KiB | Viewed 1087 times ]

Is the axis system you made for the Gemstone I essentially the same as might have been used for the Original Madness concept? In other words, does the Gemstone I have a six axis system rather than a (probably much more complex) twelve axis system? If so, does this cause any turns to be blocked that appear to be viable?

rubikcollector123 wrote:
I think David Pitcher did a magnetic edge turning hexagonal dipyramid, which is basically a shapemod of this. Am I right?
The Dave's Diamond puzzle is a hexagonal dipyramid, but as you note it is edge turning. Also, the proportions of the dipyramid are such that every other slice is at 90 degrees. This means the axis system is the same as for two superimposed 2x2x2 cubes rotated 45 degrees from each other.

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 Post subject: Re: Gemstone I (Deep-cut FTHD)
PostPosted: Tue Dec 10, 2013 4:09 pm 
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David Pitcher wrote:
Beautiful puzzle! I really like the "less sharp" version of the hexagonal dipyramid that you've found. Are you going to make this available in your Shapeways shop?]

Thanks! I'm definitely considering it. I actually thought about truncating one of the corners so that the puzzle could stand upright and be a little cheaper to print when made for sale. Actually I plan to have almost all of the gemstones available for purchase, except the Gemstone IV (you have no idea how complex it is :shock: )

David Pitcher wrote:
Is the axis system you made for the Gemstone I essentially the same as might have been used for the Original Madness concept? In other words, does the Gemstone I have a six axis system rather than a (probably much more complex) twelve axis system? If so, does this cause any turns to be blocked that appear to be viable?

Exactly. This does cause internal blocking that prevents some turns, but luckily the puzzle can still be fully scrambled.
I actually wanted to make this puzzle for a long time and didn't see a way to do it without using a 12-fold rotational system, but then I found the way to use only 6 axes. :D

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