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 Post subject: Three sharp truncated mod
PostPosted: Wed Oct 22, 2008 12:40 pm 
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Location: Koblenz, Germany
Hi,
in the attached picture I show you the three puzzles from the group of sharp truncations I have built over the last months. The left one is the only new one. The other two where posted each in a group of other mods.

"Sharp Truncations" means that they are built with the same technique of truncating a 3x3x3.
The left and the right one have received some minor extensions.
I made a forth variant (Cheops Cube) a while ago without knowing that it uses the same technique.
I analysed how many other variants are there which could be made with this technique of truncation. I came up with 916 variants of which only 54 are highly symmetric (=> number of different symmetries per variant less or equal 16).

Another reason to post this was a PM I received a while ago where I was asked whether the Dodecahedron is a regular one. Answer: Not purposely and therefore: NO

BTW: The signatures of the four variants are
52882000 (Keilwürfel; on the left)
1810452882060 (Dodecahedron; in the middle)
154000AA000 (Sharp Octahedron; on the right)
AA000 (Cheops Cube; no picture here)


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SharpTruncations.jpg
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 Post subject: Re: Three sharp truncated mod
PostPosted: Wed Oct 22, 2008 1:11 pm 
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I really like the first one! It looks like a modern church architecture or something.
Nice job on all of them.


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 Post subject: Re: Three sharp truncated mod
PostPosted: Wed Oct 22, 2008 3:28 pm 
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COOL! I like toe dodahedromn one. It looks like a skewbultimate.

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 Post subject: Re: Three sharp truncated mod
PostPosted: Wed Oct 22, 2008 5:24 pm 
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Joined: Fri Mar 21, 2008 8:19 pm
Location: Washington
simply awesome. i love the dodecahedron!

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My mods so far: Siamese cube, 3x3x5 extended, octagonal cube, 4x4x1, flat 2x2, keychain star cube,2x2x3, fisher cube, keychain half truncated cube, triangle prism 3x3


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 Post subject: Re: Three sharp truncated mod
PostPosted: Fri Oct 24, 2008 10:01 am 
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Thank you, guys.


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 Post subject: Re: Three sharp truncated mod
PostPosted: Fri Oct 24, 2008 10:14 am 
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I really like the dodecahedron, not only because I have one of these made by Andreas.
I got another one made for me by Anthony,

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 Post subject: Re: Three sharp truncated mod
PostPosted: Sat Oct 25, 2008 2:44 am 
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Georges wrote:
I really like the dodecahedron, not only because I have one of these made by Andreas.
I got another one made for me by Anthony,

The one shown in your DCD2008-puzzles? Has Anthony done that solely by truncating?


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 Post subject: Re: Three sharp truncated mod
PostPosted: Sat Nov 01, 2008 11:05 am 
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I really need to know if the dodecahedron is a regular dodecahedron (are all the sides the same size). And if they are, how do you make one??? I know someone generously put out a tutorial, but I can't follow it.

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 Post subject: Re: Three sharp truncated mod
PostPosted: Sat Nov 01, 2008 4:47 pm 
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Steryne, try this thread out.

I figured it out!

After looking at this thread I saw that you had already made the non-truncating one like I thought. So it could only be an octahedron made from the truncated cube featured in this thread. I figured it was this one because this octa looks smaller than the non-truncated one.

For further illustration, I think it's the one circled..

Image

Also:

Andreas Nortmann wrote:
Yes. The second from left is the new one.
Marco guessed right. The appropriate Octahedron was started yesterday with another really new (but stupid) puzzle and 2 half-new puzzles.


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 Post subject: Re: Three sharp truncated mod
PostPosted: Sun Nov 02, 2008 9:53 am 
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@Steryne: Supermans link to the original post should answer any question considering the build of this mod. If not feel free to ask another one.
Speaking about the regularitiy: Because it is just a truncation mod it is NO regular dodecahedron.
Can Geert or Georges please take some measures to prove that?

@Superman: Right again. But wrong thread :D


Last edited by Andreas Nortmann on Sat Nov 08, 2008 4:26 am, edited 1 time in total.

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 Post subject: Re: Three sharp truncated mod
PostPosted: Fri Nov 07, 2008 10:26 am 
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I have made it on google sketchup a few times and It isn't regular.

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 Post subject: Re: Three sharp truncated mod
PostPosted: Fri Nov 07, 2008 10:42 am 
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Andreas Nortmann wrote:
Georges wrote:
I really like the dodecahedron, not only because I have one of these made by Andreas.
I got another one made for me by Anthony,

The one shown in your DCD2008-puzzles? Has Anthony done that solely by truncating?


Sometimes I miss some posts. Like this one.
No, Anthony didn't truncate.
He has another method, but don't ask me any details.
I'm more into collecting and playing then modding and building.

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http://cube.helm.lu - http://gallery.helm.lu


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 Post subject: Re: Three sharp truncated mod
PostPosted: Fri Nov 07, 2008 5:49 pm 
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CALLING ANTHONY TO THE THREAD!
WHERE ARE YOU?

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"I discovered the triangle one day while shaving. I trimmed my beard like the intersection of three circles and noticed how I could unfog a square in the bathroom mirror by rubbing my beard circularly against the glass."-Franz Reuleaux


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