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 Post subject: Re: The PentultimatePosted: Sun Apr 06, 2008 7:00 pm

Joined: Sat Apr 21, 2007 11:21 pm
Location: Marin, CA
Â­Â­X wrote:
Now let's see the mechanism

I took a bunch of pictures before and while assembling. I'll get those posted sometime soon. I want to work on a video first...

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 Post subject: Re: The PentultimatePosted: Sun Apr 06, 2008 9:47 pm

Joined: Sun Sep 02, 2007 10:24 pm
Location: Carnegie Mellon
so is it officially scrambled?
definitely not taking it apart and then putting it back together solved?

how similar is it to a skewb in trying to solve it?

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 Post subject: Re: The PentultimatePosted: Sun Apr 06, 2008 10:27 pm

Joined: Sun Jun 04, 2006 10:05 am
Location: Eastern Michigan University (Minnesota at heart)
QUINBLZ wrote:
how similar is it to a skewb in trying to solve it?
Not at all.

Skewb is vertex turning while this is face turning.

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3x3 PB 22.63
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 Post subject: Re: The PentultimatePosted: Sun Apr 06, 2008 11:30 pm

Joined: Sun Mar 11, 2007 3:11 am
Location: Oregon, USA
No doubt QUINBLZ was referring to the Skewb Diamond, not the Skewb Cube, because io put a Skewb Diamond in several of the pictures.

I think it's a meaningful comparison, in fact, as the Pentultimate and Skewb Diamond behave similarly: 1) each turn divides the puzzle in half, 2) each non-axial face is divided with one facet turning one way and all the other facets going the other way.

Otherwise, the principal difference between the puzzles is numeric:
Code:
Skewb Diamond         Pentultimate
Faces:             8                     12
Facets per face:   4                      6
Axes:              4                      6
Stops per axis:    3                      5

Like the Skewb Diamond, many of the algorithms for the Pentultimate probably involve multiples of these numbers. (That's just a cold speculation, not based on analysis.)

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 Post subject: Re: The PentultimatePosted: Mon Apr 07, 2008 12:58 am

Joined: Sun Jun 04, 2006 10:05 am
Location: Eastern Michigan University (Minnesota at heart)
I was thinking Skewb, mostly because it has centers, surrounded by corners of 3 orientations.

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Fridrich
3x3 PB 22.63
3x3 Av 30.57

20, Male
Started cubing Oct 15 '05

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 Post subject: Re: The PentultimatePosted: Mon Apr 07, 2008 2:44 pm

Joined: Tue Feb 26, 2008 1:22 pm
Just noticed the updated pics, simply amazing. I think I now get how it turns.

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 Post subject: Re: The PentultimatePosted: Mon Apr 07, 2008 2:49 pm

Joined: Sat Apr 21, 2007 11:21 pm
Location: Marin, CA
QUINBLZ wrote:
so is it officially scrambled?
definitely not taking it apart and then putting it back together solved?

Touche! I am taking it apart again to do a few more things... At some point, I need to stop and work on the V2.

Noah wrote:
Skewb is vertex turning while this is face turning.

I had originally planned to take some photos of the Pentultimate and Skewb together. But I realized that the Skewb Diamond probably has much more in common with the Pentultimate, especially the fact that it is face turning.

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 Post subject: Re: The PentultimatePosted: Mon Apr 07, 2008 4:15 pm

Joined: Thu Nov 23, 2006 6:02 pm
io wrote:
QUINBLZ wrote:
so is it officially scrambled?
definitely not taking it apart and then putting it back together solved?

Touche! I am taking it apart again to do a few more things... At some point, I need to stop and work on the V2.

V2 :O

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 Post subject: Re: The PentultimatePosted: Mon Apr 07, 2008 4:39 pm

Joined: Sun Mar 27, 2005 7:37 pm
Good to see some scramble pics. I'd love to see a stickered version. Is that a possibility for V2?

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 Post subject: Re: The PentultimatePosted: Mon Apr 07, 2008 8:15 pm

Joined: Sat Mar 29, 2008 12:55 am
Location: WA, USA
v2!?

Io, I love you! But, not in a creepy way.

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 Post subject: Re: The PentultimatePosted: Tue Apr 08, 2008 11:51 pm

Joined: Sat Apr 21, 2007 11:21 pm
Location: Marin, CA
Tony Fisher wrote:
Good to see some scramble pics. I'd love to see a stickered version. Is that a possibility for V2?

As soon as I can afford a Stika, I'd like to try. I think it could look nice stickered, too. Although I am partial to tiles for some reason.

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 Post subject: Re: The PentultimatePosted: Tue Apr 08, 2008 11:58 pm

Joined: Sat Mar 29, 2008 12:55 am
Location: WA, USA
I think after a couple a year or 2 the stickers would begin to peel if it was stickered, even with high-quality stickers.
I believe the tile puzzle would last longer than the stickered version.

p.s. I always spell something wrong and have to edit my posts.

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 Post subject: Re: The PentultimatePosted: Wed Apr 09, 2008 1:36 am

Joined: Thu Sep 13, 2007 2:36 am
io wrote:
Tony Fisher wrote:
Good to see some scramble pics. I'd love to see a stickered version. Is that a possibility for V2?

As soon as I can afford a Stika, I'd like to try. I think it could look nice stickered, too. Although I am partial to tiles for some reason.

somehow I don't think you'd have any problem at all convincing someone who has a sticka to cut you some stickers.

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 Post subject: Re: The PentultimatePosted: Thu Apr 10, 2008 8:39 pm

Joined: Sun Sep 02, 2007 10:24 pm
Location: Carnegie Mellon
i think the tiles look better because of the size of the puzzle's centers

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 Post subject: Re: The PentultimatePosted: Sun Apr 13, 2008 4:42 pm

Joined: Sat Apr 21, 2007 11:21 pm
Location: Marin, CA
At long last, here's a one minute video. You can see why I haven't been raving about the movement quality.

You'll see me turning it over and over in my hands. I'm doing so to confirm that the pieces are lined up ok for the turn.

But in spite of its drawbacks, it does work, so I'm happy. And it looks great on my shelf, too!

http://www.youtube.com/watch?v=md9QPwMuHDM

I'll post some mechanism pictures next.

(The V2 has a totally different mechanism )

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 Post subject: Re: The PentultimatePosted: Sun Apr 13, 2008 4:46 pm

Joined: Fri Oct 05, 2007 1:45 pm
Ahhh awesome.

Sure it might not turn great yet but it is a very cool puzzle indeed. I think we would all be very impressed if you could make a perfect one first time although considering it's a prototype it is almost perfect actually.

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 Post subject: Re: The PentultimatePosted: Sun Apr 13, 2008 5:01 pm

Joined: Mon Sep 09, 2002 2:19 pm
Location: Yaroslavl, Russia and Maryland, USA
io wrote:
(The V2 has a totally different mechanism )

Huh? I am all ears!

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 Post subject: Re: The Pentultimate - [now includes video]Posted: Sun Apr 13, 2008 5:14 pm

Joined: Mon Mar 03, 2008 5:30 pm
Location: NYC
WOAH!!! thats awesome man. cant wait to see v2!!

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 Post subject: Re: The Pentultimate - [now includes video]Posted: Sun Apr 13, 2008 6:00 pm

Joined: Sun Mar 23, 2008 12:30 pm
Location: Canada, Qc
Its so amazing! Awsome job!

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 Post subject: Re: The Pentultimate - [now includes video]Posted: Sun Apr 13, 2008 6:01 pm

Joined: Mon Feb 25, 2008 10:19 pm
Location: Utah
Awesome, thanks for the vid.

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 Post subject: Re: The Pentultimate - [now includes video]Posted: Sun Apr 13, 2008 6:05 pm

Joined: Sun Feb 10, 2008 4:28 pm
Location: Illinois, USA
So.. sexy..

I'm still really anxious to see the mechanism, I can't even begin to fathom what it might look like.. over 400 pieces

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 Post subject: Re: The Pentultimate - [now includes video]Posted: Sun Apr 13, 2008 6:34 pm

Joined: Sat Mar 29, 2008 12:55 am
Location: WA, USA
Â­Â­X wrote:
So.. sexy..

I'm still really anxious to see the mechanism, I can't even begin to fathom what it might look like.. over 400 pieces

Why do you people always relate twisty puzzles to sex, I mean really, sexy? cube-asm?

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 Post subject: Re: The Pentultimate - [now includes video]Posted: Sun Apr 13, 2008 6:49 pm

Joined: Mon Feb 25, 2008 5:26 pm
Location: Atlanta, GA
elijah516 wrote:
Â­Â­X wrote:
So.. sexy..

I'm still really anxious to see the mechanism, I can't even begin to fathom what it might look like.. over 400 pieces

Why do you people always relate twisty puzzles to sex, I mean really, sexy? cube-asm?

Lol!

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 Post subject: Re: The Pentultimate - [now includes video]Posted: Mon Apr 14, 2008 4:57 pm

Joined: Sun Mar 23, 2008 7:14 pm
Location: Lenexa, KS
And here I was, thinking this puzzle would never come to be...
Do you think that the v2 will solve most of the smoothness problems?

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 Post subject: Re: The Pentultimate - [now includes video]Posted: Mon Apr 14, 2008 8:29 pm

Joined: Tue Mar 13, 2007 11:24 pm
Location: MN
Think about it for a minute, lube, sliding, slotting, pops, twisting...that could describe many things, a teenage mind just prefers one of those ;D

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 Post subject: Re: The Pentultimate - [now includes video]Posted: Mon Apr 14, 2008 8:41 pm

Joined: Tue Oct 09, 2001 6:14 am
Location: Orange County, CA, USA
The idea that the puzzle has so many axes of rotation that bisect the puzzle is what astounds me the most. The interior has to be one complex beast.

The puzzle's true brilliance will shine through once the invisible parts count starts dropping. In a sense, it's the new "God's Algorithm." Just imagine...

"I can make that puzzle in 120 pieces!"

"I can make it in 105!"

"I can do it in 95!"

"... name that tune!"

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 Post subject: Re: The Pentultimate - [now includes video]Posted: Tue Apr 15, 2008 10:10 am

Joined: Sat Apr 21, 2007 11:21 pm
Location: Marin, CA
The funny part is that the 820 component parts assemble to make only 32 rigid parts that snap together to make the final puzzle.

So the final puzzle has 32 parts, of which all 32 are visible. The core is hollow.

I had to machine and cast the parts in component sub-sections, since their shapes were too complex to machine and cast in a single piece.

I have a photo with the 32 final parts on my kitchen table. I'll post it hopefully this weekend when I explain the mechanism.

But this may be a big enough hint for people to figure it out in the meantime!

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Jason Smith posted here as 'io' through 2012.
Visit Jason Smith's PuzzleForge on Shapeways!
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 Post subject: Re: The Pentultimate - [now includes video]Posted: Tue Apr 15, 2008 10:29 am

Joined: Tue Feb 26, 2008 1:22 pm
Gnarly. I'm still blown away by it.

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 Post subject: Re: The Pentultimate - [now includes video]Posted: Tue Apr 15, 2008 12:12 pm

Joined: Tue Oct 09, 2001 6:14 am
Location: Orange County, CA, USA
Suddenly the puzzle makes a ton of sense. I think the mention of parts counts threw me off, but put in that way, the idea seems a lot simple. Admittedly I'm still having some difficulty mentally visualizing what the mechanism looks like, but at least now I have a strong idea.

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 Post subject: Re: The Pentultimate - [now includes video]Posted: Sun Apr 27, 2008 7:41 pm

Joined: Sat Mar 15, 2008 2:33 pm
Location: Brigham City, Utah
pretty cool looking.. but how does it turn!? it looks like the tiny little 3 color "pyramids" that are the corners turn 360degrees but thats all.. i hope its not..?

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 Post subject: Re: The Pentultimate - [now includes video]Posted: Sun Apr 27, 2008 7:45 pm

Joined: Sat Mar 15, 2008 2:33 pm
Location: Brigham City, Utah
NNNNEVER MIND i see.

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so, who likes apricots?

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