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 Post subject: Jason's Radio Chop, Radiolarian 15, Deep Cut FTI
PostPosted: Sat Oct 19, 2013 8:44 pm 
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This is the 15th and last in my series of increasingly deeper cut face turning icosahedrons. This is the deep cut puzzle and thus the series is now technically complete at 15. I still plan to release a V2 for the Radio Star (number 11), but otherwise this represents the end!

As you all know, the equivalent dodecahedral Chopasaurus was made first a few years ago by Andrew Cormier. My version uses an entirely different mechanism called "skirting rails". In other words this is not a shells mechanism. It is closer to my Pentultimate V2.5 mechanism.

One very unique property of my version is that this puzzle does not jumble! Deep cut jumbling puzzles can sometimes block internally, which is a property I don't find desirable. In those cases, external turns look valid, but can't be done due to the internal state which cannot be seen. Since my puzzle does not jumble, it does not have this problem.

Turning is pretty tight, but it's nice and stable. Actually starting a turn seems to be the hardest part as you can see in the video. I assume it's because of so many parts having to align themselves perfectly inside.

Edge lengths are 88mm, making this a very large puzzle!

Video Here!

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Last edited by JasonSmith on Sun Oct 20, 2013 2:22 pm, edited 1 time in total.

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 Post subject: Re: Jason's Radio Chop, Radiolarian 15, Deep Cut FTI
PostPosted: Sat Oct 19, 2013 9:16 pm 
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Wow! Very well made, nice puzzle.

-d


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 Post subject: Re: Jason's Radio Chop, Radiolarian 15, Deep Cut FTI
PostPosted: Sat Oct 19, 2013 10:36 pm 
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.................
The best twisty puzzle I've ever seen...it...turns so well...I...there's nothing else I can say...just...speechless...

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 Post subject: Re: Jason's Radio Chop, Radiolarian 15, Deep Cut FTI
PostPosted: Sat Oct 19, 2013 11:19 pm 
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Why do deepcut puzzles have less surface pieces than non deep cuts?
Great work!

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 Post subject: Re: Jason's Radio Chop, Radiolarian 15, Deep Cut FTI
PostPosted: Sun Oct 20, 2013 12:52 am 
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Excellent Puzzle!!!

Jason can you publish all of the puzzles of the series - Radio Icosahedron?

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 Post subject: Re: Jason's Radio Chop, Radiolarian 15, Deep Cut FTI
PostPosted: Sun Oct 20, 2013 1:14 am 
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So now in addition to the Knucklehead mechanism, we perhaps now have a nomination for Knucklehead series completion, to reward less-than-sane pursuit of great feats despite the sheer absurdity of what is required. Congratulations meant in the best possible way!

JasonSmith wrote:
this puzzle does not jumble!
A dangerous claim to make on this forum...

Dave

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 Post subject: Re: Jason's Radio Chop, Radiolarian 15, Deep Cut FTI
PostPosted: Sun Oct 20, 2013 1:42 am 
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I'm with Dave on this one. Claiming it does not jumble is quite the statement. Even if it is true, if I was in your position right now, I would be very hesitant posting that.

Either way, I am happy to see the "whole" series complete. And since it is similar to the Pentultimate 2.5 mech, did you approach the core the same way? And on another note, will this be on shapeways for others soon? (Don't forget a family photo either!)

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 Post subject: Re: Jason's Radio Chop, Radiolarian 15, Deep Cut FTI
PostPosted: Sun Oct 20, 2013 3:35 am 
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Unbelievable!
We need a few of this series mass produced so that I can own them! Come on MF8 get on with it!

With your permission, of course, Jason!

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 Post subject: Re: Jason's Radio Chop, Radiolarian 15, Deep Cut FTI
PostPosted: Sun Oct 20, 2013 7:06 am 
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Another beautiful puzzle Jason. I suppose it had to be so big to make it stable and to maximise the size of the small internal pieces. You should have got someone with huge hands to do the video as a joke, and claimed an edge length of 60mm, that would have impressed the hell out of everyone :lol: Not that we aren't already impressed enough!

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 Post subject: Re: Jason's Radio Chop, Radiolarian 15, Deep Cut FTI
PostPosted: Sun Oct 20, 2013 7:11 am 
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What did you add to stop the puzzle from jumbling? Didn't Bram say that jumbling is hard to prevent?

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 Post subject: Re: Jason's Radio Chop, Radiolarian 15, Deep Cut FTI
PostPosted: Sun Oct 20, 2013 8:34 am 
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This is amazing, I love how the face is the same as Radiolarian 4 (Eitan's Star) except the centre triangle is missing

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 Post subject: Re: Jason's Radio Chop, Radiolarian 15, Deep Cut FTI
PostPosted: Sun Oct 20, 2013 9:14 am 
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Congrats on finishing a long series! I just wish I could own any of these. You know, the Radio 3 seems fit for mass production, as the radio 4 (Eitan's Star) has been mass produced. Just letting you consider it....

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 Post subject: Re: Jason's Radio Chop, Radiolarian 15, Deep Cut FTI
PostPosted: Sun Oct 20, 2013 9:46 am 
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Congratulations, Jason. I would love to see any of these series mass-produced. I think Radiolarian 4/ES has shown that there is a market.

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 Post subject: Re: Jason's Radio Chop, Radiolarian 15, Deep Cut FTI
PostPosted: Sun Oct 20, 2013 11:24 am 
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What an achievement! I was wondering if you'd use a shells buildup for this puzzle. From your description of the mechanism, does that mean the internal portion of the puzzle is mostly a hollow sphere?

I really like the size of this beast. I bet it feels great to hold a deep-cut puzzle that big.

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 Post subject: Re: Jason's Radio Chop, Radiolarian 15, Deep Cut FTI
PostPosted: Sun Oct 20, 2013 2:18 pm 
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bmenrigh wrote:
What an achievement! I was wondering if you'd use a shells buildup for this puzzle. From your description of the mechanism, does that mean the internal portion of the puzzle is mostly a hollow sphere?

I really like the size of this beast. I bet it feels great to hold a deep-cut puzzle that big.


Yeah, this uses "skirting rails", which is the same as my Pentultimate V2.5. This puzzle pushed the limits of that idea a bit further, but it still works!

Thanks you guys, glad you like it!

I'll definitely plan to get a family photo, but at the moment Radiolarian 3 has been loaned to a friend.

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 Post subject: Re: Jason's Radio Chop, Radiolarian 15, Deep Cut FTI
PostPosted: Sun Oct 20, 2013 10:43 pm 
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Regarding it not jumbling, does that mean that the internal rails geometry stays fixed and so even though the external cuts align for jumbling moves, the internal rails remain icosahedral and so the internal cuts don't align to permit the jumbling?

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 Post subject: Re: Jason's Radio Chop, Radiolarian 15, Deep Cut FTI
PostPosted: Mon Oct 21, 2013 12:02 am 
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Yeah, you're exactly right. There are parts inside that keep icosahedral geometry no matter where you are in a turn, so turns aren't valid that break that. I've considered ways to prevent jumbling in the past and it's pretty difficult. I consider this a bug and a feature of my mechanism.

If you want to see this geometry jumble, check out Drew's Chopasaurus video. The jumbling is actually pretty spectacular.

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 Post subject: Re: Jason's Radio Chop, Radiolarian 15, Deep Cut FTI
PostPosted: Mon Oct 21, 2013 12:03 am 
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I'm curious about this too. I feel like the fact that it doesn't jumble is actually really interesting because preventing it internally isn't usually a simple thing to do.

(Edit: ninja'd!)


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 Post subject: Re: Jason's Radio Chop, Radiolarian 15, Deep Cut FTI
PostPosted: Mon Oct 21, 2013 1:21 am 
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JasonSmith wrote:
Edge lengths are 88mm, making this a very large puzzle!
Anyone know what the edge length is for the Chopasaurus? How does your piece count compare with the 919 in the Chopasaurus? And I just went back and re-read some the Chopasaurus thread. Andrew's last post in that thread mentions a Chopasaurus v1.1. Did a second one ever get made? I'd love to see these two side-by-side someday. And I'd love to get a peak at the mechanism of both. I bet they both look crazy. Congrats on the great accomplishment.

Would I be correct is saying all the other's in the series use the shells mech? Is this non-jumbling mech even applicable to the others or does it only work on the deep cut version?

Carl

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 Post subject: Re: Jason's Radio Chop, Radiolarian 15, Deep Cut FTI
PostPosted: Mon Oct 21, 2013 10:46 am 
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This is
JasonSmith wrote:
the end!

BTW:
http://twistypuzzles.com/cgi-bin/pdb-se ... dv&inv=310

Can you point me to Radiolarian 4?
I must have missed them somehow.
And Radiolarian 10 is missing too but I think that was intentional too.


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 Post subject: Re: Jason's Radio Chop, Radiolarian 15, Deep Cut FTI
PostPosted: Mon Oct 21, 2013 12:48 pm 
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Radiolarian 4 (beat to the punch by Eitan) is here:
viewtopic.php?f=15&t=24447&hilit=+Radiolarian+4+

And Radiolarian 10 (a failure until someone sponsors a bigger version) is here:
viewtopic.php?f=15&t=24954&hilit=+radiolarian+10+
I could see tackling 10 version 2 someday if it becomes financially viable.

Radiolarian 11 was also a failure:
viewtopic.php?f=9&t=25248&hilit=+radiolarian+11+
But I'm working on version 2 already.

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