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 Post subject: 4x4x4 Rhombic Triacontahedron
PostPosted: Fri Jan 01, 2010 8:21 pm 
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My first 4x4x4 shape mod. According to my calculations, my first 7x7x7 shape mod should be appearing in the year 2016 :? :D

It was made from a genuine Eastsheen brand 4x4x4. The sides were first built outward with mini Dian Sheng 3x3x3 pieces. I don't like white puzzles very much, but I had no choice due to mini Dian Shengs only being available in white.

In order to get this pattern of cuts, the Dian Sheng pieces had to be trimmed to L*(phi-1) where "L" is the length of one mini Dian Sheng piece and phi is the Golden Ratio.

The geometry of the rhombic triacontahedron was then cut out and the "skeleton" plated with 1mm styrene sheet before stickering in 10 colours with handcut vinyl.

The geometry is a little off in places, but considering the number of sides, I'm happy with it. Also, with all the extra material piled on, movement is tighter than the base puzzle - I prefer the term "comfortably resistant"!

It's probably possible to make one by truncation-only of a Rubik's brand 4x4x4. I think the movement would end up poor with all that material removed.

Edit: Video added 04/01/10
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I like pictures of "cut and paste" skeletons, so here's a couple...
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Last edited by Justin on Mon Jan 04, 2010 2:59 pm, edited 1 time in total.

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 Post subject: Re: 4x4x4 Rhombic Triacontahedron
PostPosted: Fri Jan 01, 2010 8:25 pm 
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wow. I'm just guessing, but I think this is the first.

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 Post subject: Re: 4x4x4 Rhombic Triacontahedron
PostPosted: Fri Jan 01, 2010 9:21 pm 
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That's awesome looking and very proffessionally done. I love it and really want one! It looks like so much fun to solve!


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 Post subject: Re: 4x4x4 Rhombic Triacontahedron
PostPosted: Fri Jan 01, 2010 9:35 pm 
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Justin wrote:
My first 4x4x4 shape mod. According to my calculations, my first 7x7x7 shape mod should be appearing in the year 2016 :? :D


Is that linear or quadratic :wink:

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 Post subject: Re: 4x4x4 Rhombic Triacontahedron
PostPosted: Fri Jan 01, 2010 9:46 pm 
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the quality is amazing!!!!!

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 Post subject: Re: 4x4x4 Rhombic Triacontahedron
PostPosted: Fri Jan 01, 2010 9:59 pm 
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Grats on your first 4x4x4 shape mod, I'd say it's a success :D :D


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 Post subject: Re: 4x4x4 Rhombic Triacontahedron
PostPosted: Fri Jan 01, 2010 10:07 pm 
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wow thats nice!

nicest looking puzzle iv seen in a while that wasnt casted

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 Post subject: Re: 4x4x4 Rhombic Triacontahedron
PostPosted: Fri Jan 01, 2010 11:10 pm 
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...Wow, that's awesome.


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 Post subject: Re: 4x4x4 Rhombic Triacontahedron
PostPosted: Sat Jan 02, 2010 1:41 am 
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Steryne wrote:
Justin wrote:
My first 4x4x4 shape mod. According to my calculations, my first 7x7x7 shape mod should be appearing in the year 2016 :? :D

Is that linear or quadratic :wink:

Cubic of course.

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 Post subject: Re: 4x4x4 Rhombic Triacontahedron
PostPosted: Sat Jan 02, 2010 2:58 am 
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Great job, it looks perfect.


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 Post subject: Re: 4x4x4 Rhombic Triacontahedron
PostPosted: Sat Jan 02, 2010 5:06 am 
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Simply beautiful.

Thomas

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 Post subject: Re: 4x4x4 Rhombic Triacontahedron
PostPosted: Sat Jan 02, 2010 7:58 am 
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Awesome. Great Puzzle!

Alex

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 Post subject: Re: 4x4x4 Rhombic Triacontahedron
PostPosted: Sat Jan 02, 2010 9:03 am 
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It's beautiful, great job!

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 Post subject: Re: 4x4x4 Rhombic Triacontahedron
PostPosted: Sat Jan 02, 2010 12:30 pm 
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You've given us another great puzzle or to coin an anagram "A Trance Donor Hit". :D

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 Post subject: Re: 4x4x4 Rhombic Triacontahedron
PostPosted: Sat Jan 02, 2010 1:06 pm 
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MarkSS wrote:
You've given us another great puzzle or to coin an anagram "A Trance Donor Hit". :D


If you include "Rhombic" you can get "A Cab Chimed North In Rotor" or "Iron Horn Chromed A Tit Cab".


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 Post subject: Re: 4x4x4 Rhombic Triacontahedron
PostPosted: Sat Jan 02, 2010 1:49 pm 
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That could have been made by me :)
An instant buy if it makes its way to Ebay.


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 Post subject: Re: 4x4x4 Rhombic Triacontahedron
PostPosted: Sat Jan 02, 2010 2:03 pm 
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Amazing as usual Justin :)

Congratulations you made the 1000th New Puzzle's topic!! :D

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 Post subject: Re: 4x4x4 Rhombic Triacontahedron
PostPosted: Sat Jan 02, 2010 2:28 pm 
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i still cant believe how beautiful this is!

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 Post subject: Re: 4x4x4 Rhombic Triacontahedron
PostPosted: Sat Jan 02, 2010 9:00 pm 
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Thanks for the comments :)

MarkSS wrote:
You've given us another great puzzle or to coin an anagram "A Trance Donor Hit". :D
I like creating anagrams too...

Triacontahedron = Erno can't hoard it :D


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 Post subject: Re: 4x4x4 Rhombic Triacontahedron
PostPosted: Sat Jan 02, 2010 9:40 pm 
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it very nice.:)

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 Post subject: Re: 4x4x4 Rhombic Triacontahedron
PostPosted: Sun Jan 03, 2010 12:50 am 
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Clay n Eva Creations wrote:
i still cant believe how beautiful this is!

Ive been thinking the same thing.... this looks flawless.
Im pretty well inspired to make my own... i want one soo bad

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 Post subject: Re: 4x4x4 Rhombic Triacontahedron
PostPosted: Sun Jan 03, 2010 7:34 am 
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wait...is this the first hands on triacontahedron? I think YES!


Leslie


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 Post subject: Re: 4x4x4 Rhombic Triacontahedron
PostPosted: Mon Jan 04, 2010 1:01 pm 
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What a great mod! I particularly like the skeleton pictures.

Skarabajo.

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 Post subject: Re: 4x4x4 Rhombic Triacontahedron
PostPosted: Mon Jan 04, 2010 1:13 pm 
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I love the skeleton pictures.

My favorite skeleton pictures are of the ghost cube, though.

:D

This is amazing, I should actually do my 4x4x4 mod.

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 Post subject: Re: 4x4x4 Rhombic Triacontahedron
PostPosted: Mon Jan 04, 2010 1:18 pm 
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Leslie Le wrote:
wait...is this the first hands on triacontahedron? I think YES!


Leslie


There's been a few but I am pretty sure this is the first 5x5x5 version.


Great puzzle Justin.

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 Post subject: Re: 4x4x4 Rhombic Triacontahedron
PostPosted: Mon Jan 04, 2010 2:28 pm 
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Tony Fisher wrote:
Leslie Le wrote:
wait...is this the first hands on triacontahedron? I think YES!


Leslie


There's been a few but I am pretty sure this is the first 4x4x4 version.


Great puzzle Justin.


Fixed :)


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 Post subject: Re: 4x4x4 Rhombic Triacontahedron
PostPosted: Mon Jan 04, 2010 2:38 pm 
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This is why you are one of my top five favorite builders well done! :D


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 Post subject: Re: 4x4x4 Rhombic Triacontahedron
PostPosted: Mon Jan 04, 2010 3:29 pm 
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Leslie Le wrote:
wait...is this the first hands on triacontahedron? I think YES!

Leslie
Quite a few of them out there. I've always seen it as a rhombic dodecahedron on steroids :)

Carter Tarrer made a handmade Impossiball version which others have reproduced from a Megaminx (corners-only) mentioned here. Unfortunately the photo links in the thread are broken.

Hidetoshi made a handmade "full" Megaminx version. A photo of it next to Carter's version can be seen here.

A "work in progress" 3x3x3 CAD version by xsportx was first seen here. I don't know if it was ever finished and stickered - it would be nice to find out!

A Skewb version with CAD extensions, seen here was made by matt523.



I've just added a video to the beginning of the first post.

Also, here's a MathWorld link that I found quite useful, showing a rhombic triacontahedron built on a cube.


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