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 Post subject: Pycubro (ON EBAY)Posted: Wed Aug 22, 2012 8:52 am

Joined: Mon Apr 18, 2011 2:47 am
Hi everybody, it was a long time since I made a puzzle. Now I have spare time, so I built this puzzle.
I called it pycubro ("pyraminx cubic brother") because it was built from a pyraminx.
The problem is that the pyraminx can't be transformed into a cubic shape, so I made it using an extra piece which complete the cubic shape.

I hope you like it, I'm glad with the result.

bye!

I know the video quality is bad. I hope to have a better camera in the following days.

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Last edited by asturar on Fri Aug 31, 2012 3:35 pm, edited 5 times in total.

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 Post subject: Re: PicubroPosted: Wed Aug 22, 2012 6:27 pm

Joined: Mon Mar 07, 2011 11:08 pm
asturar wrote:
The problem is that the piraminx can't be transformed into a cubic shape,

Assuming that by "piraminx" you mean "Pyraminx", actually, it CAN be made cubic. It's called the Cubominx.

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 Post subject: Re: PicubroPosted: Wed Aug 22, 2012 7:23 pm

Joined: Sun Mar 07, 2010 2:19 pm
Location: PA
Crazy56U wrote:
asturar wrote:
The problem is that the piraminx can't be transformed into a cubic shape,

Assuming that by "piraminx" you mean "Pyraminx", actually, it CAN be made cubic. It's called the Cubominx.

Technically, a Pyraminx cannot be made cubic without introducing additional pieces that would be equivalent to Halpern-Meier Tetrahedron centers or Skewb corners. Making those extra pieces from a Pyraminx core can't really be done without adding extra mechanism, so to circumvent this problem Tony capped up the holes and added gaps between them to prevent collisions. It's similar to what is done in the Flowerminx.

But that is a very cool puzzle. I like it a lot.

Chandler

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 Post subject: Re: PicubroPosted: Thu Aug 23, 2012 2:53 am

Joined: Mon Apr 18, 2011 2:47 am
Crazy56U wrote:
asturar wrote:
The problem is that the piraminx can't be transformed into a cubic shape,

Assuming that by "piraminx" you mean "Pyraminx", actually, it CAN be made cubic. It's called the Cubominx.

Yes, I wanted to say pyraminx, no piraminx. It was a mistake. Thank you.

I didn't know the cubominx, nice puzzle!!

thank you for comment.

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 Post subject: Re: PicubroPosted: Thu Aug 23, 2012 2:55 am

Joined: Mon Apr 18, 2011 2:47 am
Quirky-Cubes wrote:
Crazy56U wrote:
asturar wrote:
The problem is that the piraminx can't be transformed into a cubic shape,

Assuming that by "piraminx" you mean "Pyraminx", actually, it CAN be made cubic. It's called the Cubominx.

Technically, a Pyraminx cannot be made cubic without introducing additional pieces that would be equivalent to Halpern-Meier Tetrahedron centers or Skewb corners. Making those extra pieces from a Pyraminx core can't really be done without adding extra mechanism, so to circumvent this problem Tony capped up the holes and added gaps between them to prevent collisions. It's similar to what is done in the Flowerminx.

But that is a very cool puzzle. I like it a lot.

Chandler

Thank you for comment. I think the cubominx is a really interesting puzzle. Could you explain how I should put the extra pieces in the core to make a cubic pyraminx?

thank you!

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 Post subject: Re: PicubroPosted: Fri Aug 24, 2012 9:56 pm

Joined: Sun Mar 07, 2010 2:19 pm
Location: PA
asturar wrote:
Thank you for comment. I think the cubominx is a really interesting puzzle. Could you explain how I should put the extra pieces in the core to make a cubic pyraminx?

thank you!

It's hard to explain, and I'm no expert. But I think the extra pieces needed for it could only be held in by magnets. It would make the puzzle have the same number and types of pieces as a Skewb.

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 Post subject: Re: Pycubro (VIDEO ADDED)Posted: Sun Aug 26, 2012 5:43 am

Joined: Tue Oct 13, 2009 10:27 pm
Location: Philippines, Tacloban City
I really like the idea of the extra piece. How did you truncate the pyraminx?

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 Post subject: Re: PicubroPosted: Tue Aug 28, 2012 4:20 pm

Joined: Mon Apr 18, 2011 2:47 am
Quirky-Cubes wrote:
asturar wrote:
Thank you for comment. I think the cubominx is a really interesting puzzle. Could you explain how I should put the extra pieces in the core to make a cubic pyraminx?

thank you!

It's hard to explain, and I'm no expert. But I think the extra pieces needed for it could only be held in by magnets. It would make the puzzle have the same number and types of pieces as a Skewb.

you're right. Chino told me in other puzzle forum, that the pyraminx transformed into a cube is the skewb cube. I compared the core and I think I understand the mechanism.

Thank you!

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 Post subject: Re: Pycubro (VIDEO ADDED)Posted: Tue Aug 28, 2012 4:23 pm

Joined: Mon Apr 18, 2011 2:47 am
HeX wrote:
I really like the idea of the extra piece. How did you truncate the pyraminx?

Thank you for your comment , I also think the extra piece is cool, it was an accident, because it was the only way I found to make it cube, but the result is cool

I didn't truncate the pyraminx, the only thing I did, was to quit the pyraminx's corners. It's too easy to do, you just have to pull it.

Bye!!

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 Post subject: Re: Pycubro (VIDEO ADDED)Posted: Tue Aug 28, 2012 4:41 pm

Joined: Mon Aug 27, 2007 3:50 pm
Location: Copenhagen, Denmark
I am quite sure the Skewb is a name made up from Pyraminx and Cube. Try and say it just after each other.
The two puzzles are not identical thouh. They solve differently.
To understand the difference better look at the Jinx Pyraminx/ Halpern Meier Tetrahedron and compare that to a Pyraminx.
The pyraminx has 6 moving edge pieces and 4 centers that spins in place.
The HM tetra has yet another kind of piece that is 3-fold symmetric.

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 Post subject: Re: Pycubro (VIDEO ADDED)Posted: Tue Aug 28, 2012 6:24 pm

Joined: Thu Oct 16, 2008 9:46 pm
Location: Littleton CO
Sigurd wrote:
I am quite sure the Skewb is a name made up from Pyraminx and Cube. Try and say it just after each other.

I always thought it had to do with skewed cuts, skew + cube= skewb. I could be wrong. I don't pretend to be Meffert.
In any case, this puzzle is really cool! I can't think of many twisty puzzles that have a solved state that includes a piece that has to be removed to move the puzzle. Very interesting puzzle.

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 Post subject: Re: Pycubro (VIDEO ADDED)Posted: Tue Aug 28, 2012 8:21 pm

Joined: Mon Aug 18, 2008 10:16 pm
Location: Somewhere Else
The name "Skewb" was coined by Douglas Hofstadter in a column for Scientific American.

http://en.wikipedia.org/wiki/Skewb

The Skewb was originally called "Pyraminx Cube", actually. So there you go.

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 Post subject: Re: Pycubro (VIDEO ADDED)Posted: Tue Aug 28, 2012 8:46 pm

Joined: Sun May 29, 2011 2:56 pm
Location: New York
Woahhhh dude. This looks very nice!

-Doug

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 Post subject: Re: Pycubro (VIDEO ADDED)Posted: Fri Aug 31, 2012 3:13 pm

Joined: Mon Apr 18, 2011 2:47 am
Sigurd wrote:
I am quite sure the Skewb is a name made up from Pyraminx and Cube. Try and say it just after each other.
The two puzzles are not identical thouh. They solve differently.
To understand the difference better look at the Jinx Pyraminx/ Halpern Meier Tetrahedron and compare that to a Pyraminx.
The pyraminx has 6 moving edge pieces and 4 centers that spins in place.
The HM tetra has yet another kind of piece that is 3-fold symmetric.

I didn't know the origin of the name, it's cool to know it
I don't have the puzzles you comment to compare it with the pyraminx, after all I think I understand the mechanism to convert one in other.

thank you for comment.

bye!

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 Post subject: Re: Pycubro (VIDEO ADDED)Posted: Fri Aug 31, 2012 3:16 pm

Joined: Mon Apr 18, 2011 2:47 am
eye2eye wrote:
Sigurd wrote:
I am quite sure the Skewb is a name made up from Pyraminx and Cube. Try and say it just after each other.

I always thought it had to do with skewed cuts, skew + cube= skewb. I could be wrong. I don't pretend to be Meffert.
In any case, this puzzle is really cool! I can't think of many twisty puzzles that have a solved state that includes a piece that has to be removed to move the puzzle. Very interesting puzzle.

I neither know puzzles wich have an extra piece, but it's true too that I don't know much puzzles. I wish it be the first, it would be nice.

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 Post subject: Re: Pycubro (VIDEO ADDED)Posted: Fri Aug 31, 2012 3:17 pm

Joined: Mon Apr 18, 2011 2:47 am
rubixwiz031 wrote:
Woahhhh dude. This looks very nice!

-Doug

many thanks!

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