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 Post subject: 2x2x5 Idea
PostPosted: Sat May 17, 2008 4:43 pm 
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Since the only 2x2x5 i saw was HUGE, i have thought of an idea for making a much smaller one.

1. make a 2x2x3
2. extend similar to how would a 2x2x4
3. boom, you got a 2x2x5

has this ever been thought of before? if it has, sorry for wasting your time :D

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 Post subject: Re: 2x2x5 Idea
PostPosted: Sat May 17, 2008 4:50 pm 
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Location: Orange County, CA
Its an idea, but I don't think it is possible. On a half turn the extensions would be free to fall out of their tracks.

The only way to overcome this is to do what Tony Fisher did with his 2x2x7 and add ball bearings in a way that they prevent the hanging pieces from falling out. I think that on a scale as small as the Rubiks 3x3 parts are, it would be nearly impossible to do, but more "impossible" things have been done with cube mods than ever (void cube, void minx, 2x2x7, teraminx, etc.)

Good luck to anyone willing to prove me wrong, I would love to see it!

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 Post subject: Re: 2x2x5 Idea
PostPosted: Sat May 17, 2008 6:06 pm 
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I have had an idea about how to make a smaller one than the enormous one that I made, but it would be very fragile. You could do it by doing something similar to what you said. You could make arms that attach the outer pieces to a track that is deeper inside the puzzle. My other idea was to make a 2x2x1, attach second and fouth layers with a 2x2x4 method, and then make arms inside of what you used to make it a 2x2x3. Both of these ideas are very poorly explained by me. Because of how big the 2x2x5 I made is, it is more durable than either of these designs.

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 Post subject: Re: 2x2x5 Idea
PostPosted: Sun May 18, 2008 5:59 pm 
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professorcube5x5 wrote:
Its an idea, but I don't think it is possible. On a half turn the extensions would be free to fall out of their tracks.


oh ya, i forgot about that...

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 Post subject: Re: 2x2x5 Idea
PostPosted: Sun May 18, 2008 10:26 pm 
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Location: Carnegie Mellon
if you have an arm on the outer ones that extends all the way down into the 2x2x1 at the center, it is possible. The main problem is that the tongues have to stack and you run into some size limitations there if you want a sturdy puzzle


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 Post subject: Re: 2x2x5 Idea
PostPosted: Sun May 18, 2008 10:37 pm 
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QUINBLZ wrote:
if you have an arm on the outer ones that extends all the way down into the 2x2x1 at the center, it is possible. The main problem is that the tongues have to stack and you run into some size limitations there if you want a sturdy puzzle

Exactly why I decided to make one that is big. REALLY BIG.

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 Post subject: Re: 2x2x5 Idea
PostPosted: Sun May 18, 2008 10:51 pm 
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I drew one up in Sketchup once when I first got the idea that it was possible, but it was too big for me. Unfortunately as of now thats probably the only stable way to make one, by conventional means.

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 Post subject: Re: 2x2x5 Idea
PostPosted: Mon May 19, 2008 2:01 am 
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Location: Rotterdam, Netherlands
As has been pointed out, no it's not a good idea.
But don't feel bad. When I first started building, I had the same idea: viewtopic.php?f=9&t=5278&p=37547

:-)

Thomas

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