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 Post subject: Split Jing's Pyraminx
PostPosted: Thu Jun 14, 2012 5:01 pm 
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Location: Québec, Canada
I'm happy to present my second 3D printed puzzle (but the first the be released).
As the name* says, it is basically a jing's pyraminx, but it can turn again after an half rotation (60°).
I'm quite proud of the result, but there is some mistakes (I used too much super glue on the blue side, which resulted in having glue on the fingers and putting some glue on the stickers, so they whitened by drying)
NEW VIDEO
Shapeways

old video

PICTURES : (taken with my iPhone)

Image Image

Image Image

Image

*the name is not definitive, if you have some ideas for a name feel free to suggest.

P.S. I hope my english is clear enough!

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Last edited by polymaker on Thu Aug 30, 2012 1:26 pm, edited 4 times in total.

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 Post subject: Re: Split Jing's Pyraminx
PostPosted: Thu Jun 14, 2012 5:07 pm 
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Location: Ridgefield, Connecticut
Wow, this is really nice. It has a very cool looking face pattern too. How many shape changing turns can be made before it is completely locked up? It looked like it was somewhat blocked after the 2 you made in the video.

Ben


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 Post subject: Re: Split Jing's Pyraminx
PostPosted: Thu Jun 14, 2012 5:13 pm 
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That puzzle is seriously awesome. And seriously confusing. I'm looking forward to the next video to see how the geometry works. Great work man. :)

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 Post subject: Re: Split Jing's Pyraminx
PostPosted: Thu Jun 14, 2012 5:15 pm 
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Benf207 wrote:
How many shape changing turns can be made before it is completely locked up? It looked like it was somewhat blocked after the 2 you made in the video.


I'm not 100% sure, but I think that there are always at least two axis that are not blocked. Before dying it, I did a lot of shape changing moves, the limit is way beyond 2!

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 Post subject: Re: Split Jing's Pyraminx
PostPosted: Thu Jun 14, 2012 5:17 pm 
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This is really neat. This means each grip turns modulo 6 rather than 3? Doesn't this mean that the puzzle jumbles? Do you have a feel for whether or not the bandaging is due to jumbling or if the puzzle can be unbandaged?

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 Post subject: Re: Split Jing's Pyraminx
PostPosted: Thu Jun 14, 2012 5:42 pm 
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bmenrigh wrote:
Doesn't this mean that the puzzle jumbles? Do you have a feel for whether or not the bandaging is due to jumbling or if the puzzle can be unbandaged?


I asked myself the same question! I'm not sure but I think it jumble. I'm trying to find wich pieces need to be unbandged, but after just a few moves I didn't found a blocked axis because I'm scared to scramble it :lol:

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 Post subject: Re: Split Jing's Pyraminx
PostPosted: Thu Jun 14, 2012 7:24 pm 
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Location: Canada
Wow, that's nice :P .

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 Post subject: Re: Split Jing's Pyraminx
PostPosted: Thu Jun 14, 2012 8:17 pm 
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Location: New York
If you can do this with a Jing's Pyraminx, think of what else you could do it with (using the same mechanism)
-Skewb
-Higher order Skewbs
-Higher Order Halper-Meiyan Pyramid (Higher order jings pyraminx's)
-Regular pyraminx?
-Higher order regular pyraminx?????

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 Post subject: Re: Split Jing's Pyraminx
PostPosted: Thu Jun 14, 2012 8:24 pm 
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I would have thought we would see a Mix-up Skewb in cubic form first, but seeing it first as a pillowed tetrahedron is cool too.

I wonder what the spherical version would look like.

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 Post subject: Re: Split Jing's Pyraminx
PostPosted: Thu Jun 14, 2012 9:03 pm 
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This is very nice. I wonder what it would look like as a skewb.

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 Post subject: Re: Split Jing's Pyraminx
PostPosted: Fri Jun 15, 2012 2:24 am 
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Beautiful, especially the shapes it makes when it jumbles. It has a lot of stored cuts. Must be pretty fun to solve as well...
I'll try to figure out its skewb form.

EDIT: Here it is

Attachment:
cubicsplitjinx.png
cubicsplitjinx.png [ 62.53 KiB | Viewed 5609 times ]


More EDIT: After toying with this puzzle in SketchUp, it feels surprisingly unrestricted. Question: it's the face hexagons that are attached to the core, not the corners, right?

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 Post subject: Re: Split Jing's Pyraminx
PostPosted: Fri Jun 15, 2012 11:05 am 
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This is the first time that I did not realize that I made the stickers for a puzzle when it was announced. :shock:
I have just searched your posts after your e-mail (would like to link it to the product). :wink:

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 Post subject: Re: Split Jing's Pyraminx
PostPosted: Tue Jul 10, 2012 11:18 pm 
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polymaker wrote:
I'm not sure but I think it jumble. I'm trying to find wich pieces need to be unbandged, but after just a few moves I didn't found a blocked axis because I'm scared to scramble it :lol:

It's definitely jumbling. It has all of the hallmarks of jumbling behavior. Whole groups of pieces can be spun around and exchanged with other pieces.

It seems quite similar in jumbling to Gelatinbrain's 6.3.1

So far I'm having a lot of trouble unjumbling it.

Edit:
I'm pretty close to unjumbling the puzzle and I'm getting a better feel for how the jumbling works. I have made an image to describe roughly how the jumbling behaves:
Attachment:
split_jings_pyra_markup.png
split_jings_pyra_markup.png [ 134.28 KiB | Viewed 4971 times ]


The GREEN parts behave in a group like BLUE corners. Corners can go in the green spots and the green group can go in corner spots. Also, just as corners have 3 orientations, the green group can be twisted in place.

The PINK edge wing pieces can be turned around in place but I don't think this can be done purely. Other parts have to be jumbled out of place too for them to be in backwards.

The minimum unbandaging cut that I can find is the YELLOW line. It would be hard to reach a situation where you could use this cut though. Even more useful would be to add the yellow cut and the TEAL cut as this would open up quite a bit more jumbling.

EDIT 2:
I've figured out the rule for the PINK edges. To flip one around one of the adjacent irregular 4-sided parts (the chiral ones) has to to be in the wrong orbit. That is, a right-chiral piece needs to be in a left orbit or vice-versa. This will force the edge wing to be flipped around too:
Attachment:
split_jings_pyra_jumble_chiral_small.png
split_jings_pyra_jumble_chiral_small.png [ 189.31 KiB | Viewed 4968 times ]

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 Post subject: Re: Split Jing's Pyraminx
PostPosted: Sun Jul 15, 2012 9:52 pm 
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Location: Marin, CA
Is it possible to make a Split Dino Cube?


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 Post subject: Re: Split Jing's Pyraminx
PostPosted: Mon Jul 16, 2012 12:59 pm 
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Bram wrote:
Is it possible to make a Split Dino Cube?

I thought of that about two years ago before I really knew what I was doing. Looking back either you can only add one extra cut per turning group or new pieces will be created that could float out of the puzzle. A split sphere Dino cube would be very easy and straightforward though.

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 Post subject: Re: Split Jing's Pyraminx
PostPosted: Mon Jul 16, 2012 3:53 pm 
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PuzzleMaster6262 wrote:
Bram wrote:
Is it possible to make a Split Dino Cube?

I thought of that about two years ago before I really knew what I was doing. Looking back either you can only add one extra cut per turning group or new pieces will be created that could float out of the puzzle. A split sphere Dino cube would be very easy and straightforward though.


A pillowed cube would be better than a sphere, but other than that, go for it!


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 Post subject: Re: Split Jing's Pyraminx
PostPosted: Wed Jul 18, 2012 9:06 am 
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This puzzle definitely jumbles. Back when the Constellation Six first came out I ran some unbandaging simulations and they came out something like this. You can see the parts that are getting cut to dust from jumbling. It's a shallower cut version so that it doesn't have any corners.


It looks like this on jaap's sphere.

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 Post subject: Re: Split Jing's Pyraminx
PostPosted: Wed Jul 18, 2012 12:40 pm 
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Thank you for prooving this.


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 Post subject: Re: Split Jing's Pyraminx
PostPosted: Wed Jul 18, 2012 12:48 pm 
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Based on my playing around with the Split Jing's Pyraminx, if you continued to unbandage it I think the corners would get sliced down to dust and the centers would get sliced down to circles. I'm not sure if the middle edge pieces would survive or not but it seems like most of the rest of the pieces would turn into dust.

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 Post subject: Re: Split Jing's Pyraminx
PostPosted: Thu Aug 30, 2012 1:28 pm 
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bump. I finally made another video (link in first post). It show more of the scrambling .

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