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 Post subject: Not so new puzzle but maybe new mechanism?
PostPosted: Fri Jul 31, 2009 2:24 am 
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Hello all,

Recently I found a new mechanism for the 2x2x3 cuboid.
I mentioned it in the thread about Gentosha's new cube.

I have also a few other ideas I will share in this thread.

For one of my 2x2x3 cuboids to work it would need a highly modified 2x2x2 as a core.
I have found a way by using a Eastsheen keychain 2x2x2.
The idea seems really good and I think it would make a good speed 2x2x3. I will make it sometime but not anytime soon because of the release cuboid)
But the idea can be stretched, and 2x2x4 and 2x2x5 should be no problem. both shoud be very stable and speedcubeable.

And the second 2x2x3 idea needs a 2x2x1 as a core.

This made me think about the mechanism of the 2x2x1 .
And came up with this
Attachment:
Sw221.JPG
Sw221.JPG [ 9.25 KiB | Viewed 4123 times ]


As you can see one piece alone holds all the other. (kinda like the eastsheen 2x2x2)
I really like how simple the idea is, but it would be quite complex to assemble that piece and the puzzle (wich obviously couldnt be disassembled again).

EDIT: Will this even work??!
I am not even sure :) maybe with spherical cuts?


what do you think about this idea?


-Sigurd

also, by me you are free to build, 3d design and print and sell.
But please tell me if these ideas are original. Or else I call these mechanisms mine. :wink:

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 Post subject: Re: Not so new puzzle but maybe new mechanism?
PostPosted: Fri Jul 31, 2009 3:47 am 
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Image I came up with a similar mech some time ago, only mine uses 2 core pieces as opposed to your 1 anchor piece. (dont ask why the pic is on a Lego gallery.) I don't really see how these can really get the 2x2x3 up to speed, as it's kind of hard to speedsolve with it, but at least ir\t will be more stable.

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 Post subject: Re: Not so new puzzle but maybe new mechanism?
PostPosted: Fri Jul 31, 2009 4:01 am 
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Doubleyou - technically your idea should work but it would not be possible to assemble, because you wouldn't be able to insert the anchors into the slots. It seems you already understand this problem.

Monopoly - I can't see how the yellow cubes will stay in place, won't they just fall off?

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 Post subject: Re: Not so new puzzle but maybe new mechanism?
PostPosted: Fri Jul 31, 2009 6:16 am 
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OK, there was a small mistake in the original. It should look more like this:Image

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 Post subject: Re: Not so new puzzle but maybe new mechanism?
PostPosted: Fri Jul 31, 2009 10:10 am 
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The Idea could work if it were completly 3d printed.

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 Post subject: Re: Not so new puzzle but maybe new mechanism?
PostPosted: Fri Jul 31, 2009 10:34 am 
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I have had my hopes and doubts about this one.

Kelvin, what I concluded was to print/produce the anchor pieces in several pieces and glue it together around/inside the moving pieces. VERY complex I know. But truly IMPOSSIBLE?

Monopoly, my initial idea was SO similar to yours. In fact I believe its the same one.
It came from the idea of the square one. Having a 2x1x1 part with moving parts around it.
Then I found that I would have to anchor on piece to avoid misalignment issues. Then as I was sketching it in Paint, I simply found that I didnt even need the inside 2x1x1 to make it work. It can all be one piece.
But it will have to be shaped like mine to work and keep all ;) the pieces in.

Sigurd

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 Post subject: Re: Not so new puzzle but maybe new mechanism?
PostPosted: Fri Jul 31, 2009 10:48 am 
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Doubleyou wrote:
Kelvin, what I concluded was to print/produce the anchor pieces in several pieces and glue it together around/inside the moving pieces. VERY complex I know. But truly IMPOSSIBLE?

I'm afraid so. Even if you try to glue the anchor bits together within the slots (very tricky to avoid glueing up the entire mechanism), you would not be able to get all the bits into the slots in the first place.

3d printing WOULD work if you print the puzzle already assembled, but it would be quite loose because of the gaps you need to avoid the pieces joining up. I'm not sure what the required minimum gap is for 3D printing.

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 Post subject: Re: Not so new puzzle but maybe new mechanism?
PostPosted: Fri Jul 31, 2009 12:53 pm 
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Kelvin Stott wrote:
Doubleyou wrote:
Kelvin, what I concluded was to print/produce the anchor pieces in several pieces and glue it together around/inside the moving pieces. VERY complex I know. But truly IMPOSSIBLE?

I'm afraid so. Even if you try to glue the anchor bits together within the slots (very tricky to avoid glueing up the entire mechanism), you would not be able to get all the bits into the slots in the first place.

3d printing WOULD work if you print the puzzle already assembled, but it would be quite loose because of the gaps you need to avoid the pieces joining up. I'm not sure what the required minimum gap is for 3D printing.

That's what I thought last night, but after reflecting overnight I'm not so sure.

Using a cylindrical design (for discussion) the 'feet' of the mobile pieces would need to be cut in such a way that could allow them to travel in either axis. The intersection of the two cylinders is relatively small, so the 'feet' would need to be relatively small. They couldn't fill the entire 180-degree channel in both axes.

The core would also have to be fairly open at the intersecting position to allow the mobile piece to move in either axis. It couldn't form a closed curve in either axis or it would block movement in the other axis.

But that's just badly-worded conjecture. For a definitive answer we need a good 3D model!


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 Post subject: Re: Not so new puzzle but maybe new mechanism?
PostPosted: Fri Jul 31, 2009 3:44 pm 
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i thought of doing something like this using a 2x2
es or rubiks. it would expose the inner hidden layer and maybe include an outer "shell" so the cubies would be uniform

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 Post subject: Re: Not so new puzzle but maybe new mechanism?
PostPosted: Fri Jul 31, 2009 10:05 pm 
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ulmboy, your right!
but remember that a 2x2x2, at least eastsheen is really a 3x3x3 with oversized and overlapping corners. bandaging these in pairs would give you a 2x2x1.

But do you mean the edges of the 3x3x3? that would also be a new way of doing it :D

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 Post subject: Re: Not so new puzzle but maybe new mechanism?
PostPosted: Sat Aug 01, 2009 12:23 am 
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Doubleyou wrote:
ulmboy, your right!
but remember that a 2x2x2, at least eastsheen is really a 3x3x3 with oversized and overlapping corners. bandaging these in pairs would give you a 2x2x1.

But do you mean the edges of the 3x3x3? that would also be a new way of doing it :D


i've made one out of a 3x3
but i mean that you could just expose the layer so it would stay functional

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 Post subject: Re: Not so new puzzle but maybe new mechanism?
PostPosted: Sat Aug 01, 2009 12:25 am 
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I would imaging this mechanism could work if you built 2 cubies then connect together when you put them over on of the prongs sticking out


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 Post subject: Re: Not so new puzzle but maybe new mechanism?
PostPosted: Mon Aug 10, 2009 9:31 pm 
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Hmm, I'm thinking this isn't as hard as everyone else wants it to be. It won't be able to be taken apart, but not impossible to glue together either. Basically just make a shallow hole in one side, and a peg to fit it in the other. Put a few drops of glue in the hole or on the peg, and push it together.

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 Post subject: Re: Not so new puzzle but maybe new mechanism?
PostPosted: Mon Aug 10, 2009 10:43 pm 
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Instead of glue, anchor with a screw. I had to say that. :wink:

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 Post subject: Re: Not so new puzzle but maybe new mechanism?
PostPosted: Tue Aug 11, 2009 7:42 am 
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It wouldn't work then. It would have to be a pin.

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 Post subject: Re: Not so new puzzle but maybe new mechanism?
PostPosted: Tue Aug 11, 2009 11:22 am 
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Image
Unless I missed something couldn't it work by making a center with the piece to the right of the red and making a hole in the two cubies to the right? Then you could assemble it as two halves of a puzzle and then screw it together. It's kind of like a Pyraminx Crystal.

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 Post subject: Re: Not so new puzzle but maybe new mechanism?
PostPosted: Tue Aug 11, 2009 7:31 pm 
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I came up with a mechanism, that, while requiring little 3d printing, also called for the use of 12 magnets. The "Base Pieces" could maybe be printed in halves, then the halves glued together.

Attachment:
File comment: The 2x2x1
2x2x1.jpg
2x2x1.jpg [ 23.04 KiB | Viewed 1999 times ]

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6x6 4:26.05 (6:34.68)
7x7 6:38.74 (9:48.81)
OH (35.63)

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 Post subject: Re: Not so new puzzle but maybe new mechanism?
PostPosted: Wed Aug 12, 2009 9:28 pm 
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hmm, I am not the biggest fan of magnets, but sure :) A sort of V-cube 6 click/magnet feel 2x2x1 :P

I am not too sure about those middle magnets tho. they could be replaced with a screw connection. dont you think?

Note to all, keep in mind my scetch was drawn in paint in one or two minutes. It desnt do the idea justice.

I am now calling out for all designers, can someone please design this piece??!! :D

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I believe it would work best with black plastic.

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