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PostPosted: Sun Jan 30, 2005 8:47 am 
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Hello,

Here:
http://etienne.deforas.free.fr/rubiks/7x7x7/img_16.jpg

You can see that there is a hole bettwen pieces inside the cube, the hole will be filled when turning as:

http://etienne.deforas.free.fr/rubiks/7x7x7/img_34.jpg

However, this is not a good technical solution, it is was too difficult to tune and a you had a strange feeling of internal reorganisation while playing...(I would prefer a pillow cube with circular movment if I would remake it)

See you

Etienne


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PostPosted: Thu Feb 03, 2005 12:21 am 
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Hey, I just talked to the professor, and unfortunately, the cost is rather prohibitive.

However, he suggested that I go talk to another professor, and use a cheaper STL machine.

I have an unfortunate feeling this is going to turn into some kind of wild goose chase.

Oh well, I will eventually catch that goose

TBTTFox


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PostPosted: Fri Feb 04, 2005 5:26 pm 
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I had an idea for a spherical cube. Make three shells so that they fit inside each other as close as possible, then cut the outer two and glue them together so that everything goes under other pieces that are closer to the center, except the center piece which must be connected to the inside somehow. Very easy, very possible. So all we need is circular shells and some cutting equipment! We could finally try out a real 9x9x9 or whatever!

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PostPosted: Tue Mar 08, 2005 2:14 pm 
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ha HAAAAA!!!!
Success is finally within my grasp.
It took till now to finally catch that goose, but I have a conference on March 28 with the prof that I think can help me get this DONE!!!

and if all that doesn't work out, I'm already done carving a piece out of wood(BOY is that annoying, but I wasn't sure I could get machine time)

I'll keep all of you posted as things begin to develop

TBTTFox


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PostPosted: Mon Apr 25, 2005 2:42 pm 
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So, any luck?


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 Post subject:
PostPosted: Mon Apr 25, 2005 11:56 pm 
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*sigh
unfortunately no ...

The machine time just wasn't there

However, I should be able to do a bit more work on my pieces when I get home for the summer (it's kinda hard to do all of this with only a razor blade)
Dremel tools are nice


I'll keep working on it

TBTTyler Fox


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PostPosted: Wed May 04, 2005 9:58 pm 
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veryyy nicee


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PostPosted: Thu May 05, 2005 4:30 am 
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Hello,

Nice to see that you (TBTyler) try to build one with hand, it must be quite tricky using wood.
Do you have any picture of it?

See you

Etienne


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PostPosted: Fri May 06, 2005 2:51 pm 
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Oh believe me, I gave up on wood a long time ago. the grain messed me up really bad.

however, I did find the wonder of MagicSculp

there's only 1 piece "done", but more accurately, until I get a couple more pieces done, I'm not going to finish this one.

I just got home yesterday, so I should be working on this quite a bit.

TBTTyler Fox


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PostPosted: Thu May 19, 2005 11:23 pm 
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Well now... here are some pictures of what I have done so far. The 2 mirrored pieces in my hand just got done within the last 15 minutes.


Attachments:
100_0299.JPG
100_0299.JPG [ 215.46 KiB | Viewed 2405 times ]
100_0298.JPG
100_0298.JPG [ 223.39 KiB | Viewed 2248 times ]
100_0296.JPG
100_0296.JPG [ 200.98 KiB | Viewed 2196 times ]
100_0294.JPG
100_0294.JPG [ 202.36 KiB | Viewed 2172 times ]
100_0290.JPG
100_0290.JPG [ 295.57 KiB | Viewed 2300 times ]
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 Post subject:
PostPosted: Thu May 19, 2005 11:53 pm 
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wow, the plastic looks SUPER solid. What's the material? and are they pricey?

~Joseph

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 Post subject:
PostPosted: Fri May 20, 2005 1:26 am 
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and how much Magic Sculpt is that, and how much was it?


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PostPosted: Fri May 20, 2005 3:22 am 
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Hello,

Very nice job! I like the way you do the corner...

Now, I must invent something else or bigger :( ... :wink:

I am impatient to see the result!


See you

Etienne


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 Post subject:
PostPosted: Fri May 20, 2005 1:54 pm 
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Joseph and Tim:
The material is MagicSculpt VERY nice stuff.
It's a 2 part epoxy putty that takes somewhere between 8-12 hours to harden. Look at the first picture with my entire setup, the 2 tubs are the 2 parts. The price is very reasonable, I think $25 for the 5 pounds I bought.
Currently, I've barely used any of it. This stuff is gonna last a long time. If you get some, just make sure that you get some baby powder cause it sticks to everything else.

Etienne:
Unfortunately, I made the angle on the corner incorrectly, so I had to add some to it today, and I should have that completed tonight. Then there are 2 more pieces I have to create, and then add the final cubie to the corner piece. Then on to molding.
If you have any tips on that, I would greatly appreciate that.
Oh, and I'm currently working on a gigaminx plan, however I'm going to be heading back to the drawing board for the fourth time. Just as a question, does the gigaminx absolutely require the compound motion that you built into your 7cube? I'm having trouble visualizing it.

TBTTyler Fox


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 Post subject:
PostPosted: Tue May 24, 2005 6:42 am 
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Hello,

>> Unfortunately, I made the angle on the corner incorrectly, so I had >>to add some to it today, and I should have that completed tonight.
>> Then there are 2 more pieces I have to create, and then add the final >>cubie to the corner piece. Then on to molding.
I am waiting impatiently...

For the modling process, I don't have a lot of suggestion, many comes from the tutorial of Sandy. From my design , I would have put some more tubes and more littelest to have good circulation of the polyurethane.
And tryed to align betters the two shells with extra tubes.

For the gigaminx, a circular movement is Ok, A 4 order megaminx should a simple design (i.e. without center like the 4x4x4)

Now, I would like to make a other cube this summer, if I have time!!!
(the design is ready, but not a 7x7x7 )!

See you

Etienne


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 Post subject:
PostPosted: Tue May 24, 2005 2:43 pm 
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The way I'm looking at this, there is NO difference between a 4 order and a 5 order megaminx except that there is no center in a 4 order.

Look at a normal megaminx, and visualize it as a 2 order. You'll notice that there are still edge pieces, and there are still corner pieces, just no center piece because of the intersection of all the cuts.

This is really messing me up, so do you have any other ideas for the cut pattern on a 4 or 5 order megaminx?

TBTTyler Fox

P.S.
One more piece to go on the 6x6x6 :) (Finally)


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 Post subject:
PostPosted: Tue May 24, 2005 9:43 pm 
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I completely agree with your idea for the 4 order minx. Reminds me on how eastsheen makes their higher order cubes. i.e., the eastsheen 2x2x2 is basically a bandaged 3x3x3, and the 4x4x4 is a bandaged 5x5x5. maybe you could do the same with a minx. there's a new idea, an order-2 minx. iiiiiiiiiinteresting......


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 Post subject:
PostPosted: Tue May 24, 2005 11:22 pm 
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Quinn Lewis wrote:
I completely agree with your idea for the 4 order minx. Reminds me on how eastsheen makes their higher order cubes. i.e., the eastsheen 2x2x2 is basically a bandaged 3x3x3, and the 4x4x4 is a bandaged 5x5x5. maybe you could do the same with a minx. there's a new idea, an order-2 minx. iiiiiiiiiinteresting......


There already is an order 2 minx, and yes, it is commercially available, and spherical to boot. It's called an Impossiball. Since order 3 is referred to as a "Megaminx", would that mean that an order 2 could be called a "kilominx"? L8r.


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 Post subject:
PostPosted: Wed May 25, 2005 2:55 am 
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Hello,

Yes, I agree that a 5 order Megaminx is easer to do , but I always prefered even order, because the lack of center give a lot more possibities.
I where asking, is there a parity problem in a 4 order megaminx ?

See you

Etienne


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 Post subject:
PostPosted: Wed May 25, 2005 4:58 pm 
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Quote:
Look at a normal megaminx, and visualize it as a 2 order. You'll notice that there are still edge pieces, and there are still corner pieces, just no center piece because of the intersection of all the cuts.


Tim,

Impossiballs don't have edges last time I checked. an impossiball is simply the corners of a megaminx, but as tyler said, a true order 2 minx would still have edge pieces, if all the cuts of a regular minx were applied to an order 2 minx.

At least, this is how I'm visualizing it in my head. Please, correct me if I'm wrong still in my thinking

Quinn


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 Post subject:
PostPosted: Wed May 25, 2005 9:42 pm 
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Quinn Lewis wrote:
Quote:
Look at a normal megaminx, and visualize it as a 2 order. You'll notice that there are still edge pieces, and there are still corner pieces, just no center piece because of the intersection of all the cuts.


Tim,

Impossiballs don't have edges last time I checked. an impossiball is simply the corners of a megaminx, but as tyler said, a true order 2 minx would still have edge pieces, if all the cuts of a regular minx were applied to an order 2 minx.

At least, this is how I'm visualizing it in my head. Please, correct me if I'm wrong still in my thinking

Quinn


Why? an order 2 cube doesn't. Why should an order 2 minx? L8r.


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PostPosted: Thu May 26, 2005 3:53 am 
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Tim Browne wrote:
Why? an order 2 cube doesn't. Why should an order 2 minx?

I'm puzzled, too. Maybe Quinn means a "megaminx" with cutting planes intersecting at the centre of each face? i.e., the pyraminx crystal.


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PostPosted: Thu May 26, 2005 4:57 pm 
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yes, thats exactly what I'm thinking of! There's a connection I never made....

Thanks, my mind is much more at ease now :D

Quinn


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PostPosted: Sat Jun 04, 2005 11:16 am 
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well, just because I don't mind posting a lot for the little things, I just finished the last piece (attaching the very extended corner)
It was a pain, and that's why it took so long.
I ended up drilling a hole in each of the pieces and sticking a toothpick covered in magic sculp into the holes to make it stay.

and (i've said it before, and I'll say it again)
Now to copy the pieces.

TBTTyler Fox


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 Post subject:
PostPosted: Sat Jun 04, 2005 11:21 am 
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Etienne de Foras, are you going to sticker that thing? or did you say it was not workable because of something? I read the whole topic a while ago but i think i forgot something that was relevant to this...


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PostPosted: Tue Jun 07, 2005 8:22 am 
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>Etienne de Foras, are you going to sticker that thing? or did you say it >was not workable because of something?

Well, I stopped on it because I was not satisfied with the design.
So I started an other one, pillowed, but didn't had time to finish it.
I hope this summer will give me some time.
This is why I said stuff about other size and shape, since the project wasn't really important yet, I could change to something else, depending of the feedback from Twisty.(What's take time is molding, at the end).

Since I had a lot of nice feedback (thanks to all) but not a lot of wishes for different shape and size, I will just try to make a nice and usable 7x7x7.

Other considerations for it is the weight of the cube, and the hand size !

See you

Etienne


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 Post subject:
PostPosted: Fri Jun 10, 2005 5:56 pm 
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I give this till Monday!!!

All the corners are cast, All the edges are cast, and all the extra pieces between the corners and edges are cast!

3 more types of pieces to go ... the cubes to glue onto the centers, the "center edges" and the "center corners". (some of which are done)
Unfortunately, I ran out of plastic! NOOOOoooo!!!

Tomorrow, I'm going around to all the hobby shops to check for the quick set plastic and stickers, and then DONE

Pictures to come when I'm finished.

TBTTyler Fox


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PostPosted: Fri Jun 10, 2005 6:22 pm 
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imagine a 7x7x7 one handed contest... it's hard enough turning a 5x5x5 one handed... and all the layers....

EDIT: hey, how do you refer to all the layers? IE: whats the notation?


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 Post subject:
PostPosted: Fri Jun 10, 2005 7:17 pm 
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Quote:
hey, how do you refer to all the layers? IE: whats the notation?


That was the topic of the yahoo speedcubing group a while ago.
The notation I remember went something along the lines of (Which Side Which Slice) direction
with the outer slice being 1

Something along the lines of
(R3)2 (F) (D2)2 (B3)'

TBTTyler Fox


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PostPosted: Sun Jun 12, 2005 4:35 pm 
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*sigh

well, good news and bad news

Bad news : I broke a corner off and the cube is barely able to turn at all

Good news : It does turn!!!

After all this work, it's a bit of a bittersweet end.
If I ever get to use that STL machine, I will, and I'll redo this whole thing with more accurate pieces... maybe it'll turn then.

I'll post pictures in a while

TBTTyler Fox


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PostPosted: Tue Oct 18, 2005 8:56 am 
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Any news? I'd like to see, from an engineering perspective, which mechanism works in the long-term!


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PostPosted: Tue Oct 18, 2005 8:36 pm 
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Umm, my 6cube is sitting on a shelf in my bedroom right now. There are no stickers on it, and 3 corners have broken off.

People ask to see it every once in a while, and I twist about the middle cut, and the next ones out. However the outside one won't move unless I spend 10 minutes working piece by piece around the layer.

Right now, I've got other projects including some simple cube cut-up jobs and school projects. It's probably not going to get any attention anytime soon.


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 Post subject:
PostPosted: Mon Dec 19, 2005 4:33 pm 
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Doh.

:(


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 Post subject: 7x7x7 and 6x6x6
PostPosted: Thu May 03, 2007 9:25 am 
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Where can I either buy a 6x6 or a 7x7, or find a place with building instructions. It looks pretty easy if extending it from a 5x5 (the 7x7)

Rubiksguy


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 Post subject:
PostPosted: Thu May 03, 2007 11:13 am 
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Welcome to the forum. You cannot currently buy a 6x6x6 or 7x7x7. None of us knows when they will be available but it seems likely within the next year or so.
Making one from a 5x5x5 is extremely difficult.


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PostPosted: Thu May 03, 2007 11:23 am 
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Tony Fisher wrote:
Welcome to the forum. You cannot currently buy a 6x6x6 or 7x7x7. None of us knows when they will be available but it seems likely within the next year or so.
Making one from a 5x5x5 is extremely difficult.

9x9s are another story though, aren't they Tony? :lol:

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PostPosted: Thu May 03, 2007 2:41 pm 
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Ha ha... I get that one Pembo... that was good...

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PostPosted: Thu May 03, 2007 4:56 pm 
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It shouldn't be that hard to extend a 5x5x5 into a pillowed 7x7x7, if you have the equipment to make large numbers of pieces quickly from a CAD drawing. The design isn't that complicated, and you only need two rows of floating pieces anyway.

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PostPosted: Thu May 03, 2007 6:45 pm 
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Don't make the masters by hand though, it won't work ... trust me.


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PostPosted: Thu May 03, 2007 7:26 pm 
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Well, a 7x7x7 (if you make one) won't just be an exhibition piece - you'll probably want to solve it. So you'll want the pieces as precision-made as you can get... no way you'd make them by hand.

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PostPosted: Thu May 03, 2007 7:52 pm 
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Tony Fisher wrote:
. None of us knows when they will be available but it seems likely within the next year or so.


Tony, I envy your optimism. :lol:


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PostPosted: Thu May 03, 2007 7:55 pm 
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I have the ablity to sense when things are going to happen. I know that the olympic cubes will come out this year or next.

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PostPosted: Thu May 03, 2007 8:01 pm 
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Okay. But they have been planned to come out for a long time... I wouldn't count on it... If nothing ever happens I wouldn't be suprised...

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PostPosted: Thu May 03, 2007 8:03 pm 
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It really depends on two things, how much they cost to mass produce, and if they can find a distributer

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gamemeister27 wrote:
I know that the olympic cubes will come out this year or next.


You KNOW or just hope? :wink:


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I know that if they don't, bad things will happen. Mostly to me actually. Like denial and regret.

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Pembo wrote:
Tony Fisher wrote:
Welcome to the forum. You cannot currently buy a 6x6x6 or 7x7x7. None of us knows when they will be available but it seems likely within the next year or so.
Making one from a 5x5x5 is extremely difficult.

9x9s are another story though, aren't they Tony? :lol:

I would have thought a 10x10 would be easier to build up starting with a 5x5 ...


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PostPosted: Fri May 04, 2007 6:34 am 
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I'm thinking a nothing would be an easy build up from a 5x5x5... builds like that take a lot of time and may not ever finish... They are hard to build because of all the tiny pieces... You cannot make it handmade and have it work too well... if you had all the pieces machine made then you may have a working puzzle... but that would cost a lot of money...

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Enygma 6 wrote:
I would have thought a 10x10 would be easier to build up starting with a 5x5 ...


It's easier to build a 5x5x5 than a 6x6x6 from a 3x3x3, isn't it? Same thing.

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PostPosted: Sat May 05, 2007 9:33 pm 
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The edges of the new 5x5x5 would match up with the corners and edges of the 3x3x3, so it would be easier to build a 5x5x5 than a 6x6x6 from a 3x3x3 because no pieces would match up with the 6x6x6, therefore not allowing turning.


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