Online since 2002. Over 3300 puzzles, 2600 worldwide members, and 270,000 messages.

TwistyPuzzles.com Forum

It is currently Tue Jul 22, 2014 5:11 pm

All times are UTC - 5 hours



Post new topic Reply to topic  [ 12 posts ] 
Author Message
 Post subject: Mass Produced Shells Mechanism Puzzles?
PostPosted: Wed Dec 07, 2011 1:51 pm 
Offline
User avatar

Joined: Wed Oct 01, 2008 2:39 pm
Location: Marquette, MI, USA
Hello,

I have been thinking recently and thought that shells mechanism puzzles were pretty much exclusively 3d printed puzzles. I recently realized however, that there are more of these type of mechanisms mass produced than I thought.

I was hoping we could get a list of all mass produced puzzles using this mechanism type, just out of curiosity's sake.

Pyraminx Crystal
Starminx II (face turning)
Rex cube/ Master skewb/ FTO (all have a dino cube for a core)
Rubik's brand 5x5
Dogic
Eastsheen/rubiks/lanlan/V --> 2x2
Dayan Mf8 4x4 ?

Anything else that I am missing? anything else anyone thinks may come about soon?


Last edited by Muffet on Thu Dec 08, 2011 9:45 am, edited 1 time in total.

Top
 Profile  
 
 Post subject: Re: Mass Produced Shells Mechanism Puzzles?
PostPosted: Wed Dec 07, 2011 3:39 pm 
Offline
User avatar

Joined: Thu Sep 16, 2010 4:35 am
I'm not extremely familiar with shells mech but don't some 4x4s use it? Like the Dayan + MF8 one.

_________________
Image


Top
 Profile  
 
 Post subject: Re: Mass Produced Shells Mechanism Puzzles?
PostPosted: Wed Dec 07, 2011 3:46 pm 
Offline
User avatar

Joined: Sat Feb 03, 2007 10:03 pm
Location: Mississippi
Well, the crazy 4x4 series might count... someone correct me if I'm wrong though.. There is a 3x3x3 "cube" hiding inside it I think.

_________________
Space for rent


Top
 Profile  
 
 Post subject: Re: Mass Produced Shells Mechanism Puzzles?
PostPosted: Wed Dec 07, 2011 3:57 pm 
Offline
User avatar

Joined: Tue Mar 10, 2009 7:06 pm
Location: Nowhere in particular.
jabeck wrote:
Well, the crazy 4x4 series might count... someone correct me if I'm wrong though.. There is a 3x3x3 "cube" hiding inside it I think.


Well, in that case, isn't every Eastsheen mech 2x2 (Lanlan, Maru, etc.) a shells mech puzzle?

_________________
~Kapusta

PB: At home (In Competition)
2x2 1.xx (2.88)
3x3 11.xx (15.81)
4x4 1:18.26 (1:24.63)
5x5 (3:00.02)
6x6 4:26.05 (6:34.68)
7x7 6:38.74 (9:48.81)
OH (35.63)

Current Goals:
7x7 sub 6:30
4x4 sub 1:10


Top
 Profile  
 
 Post subject: Re: Mass Produced Shells Mechanism Puzzles?
PostPosted: Wed Dec 07, 2011 4:01 pm 
Offline
User avatar

Joined: Sat Feb 03, 2007 10:03 pm
Location: Mississippi
I guess it just depends on how you define shells... I'm certainly not the best person to define that though...

_________________
Space for rent


Top
 Profile  
 
 Post subject: Re: Mass Produced Shells Mechanism Puzzles?
PostPosted: Wed Dec 07, 2011 4:24 pm 
Offline
User avatar

Joined: Thu Sep 16, 2010 4:35 am
I only say Dayan + MF8 because it has a 2x2 ball core (which does have a 3x3 inside but I wasn't sure if that counted)
Although now that I think about it, it's actually more of a cross 2x2 with added edges and corners.

_________________
Image


Top
 Profile  
 
 Post subject: Re: Mass Produced Shells Mechanism Puzzles?
PostPosted: Wed Dec 07, 2011 4:51 pm 
Offline
User avatar

Joined: Thu Dec 02, 2004 12:09 pm
Location: Missouri
jabeck wrote:
I guess it just depends on how you define shells... I'm certainly not the best person to define that though...
I agree. To me the shell much is any puzzle which has been built up from layers of concentric spheres. Your plan Jane 3x3x3 can be built this way but you just need a single sphere so maybe it shouldn't be called shells (plural) in this case. A 3x3x3 built on a shell mech just has the slice layers much thinner inside the sphere then outside it. I can't say for sure if any mass produced 3x3x3 uses this exact mech or not but the basic idea is essentially the same. So are you trying to limit this to puzzles which require the use of 2 or more concentric spherical cuts? It looks to me like its being used to describe any puzzle which has a core which is another puzzle.

Carl

_________________
-
Image

Image


Top
 Profile  
 
 Post subject: Re: Mass Produced Shells Mechanism Puzzles?
PostPosted: Wed Dec 07, 2011 5:14 pm 
Online
User avatar

Joined: Thu Dec 31, 2009 8:54 pm
Location: Bay Area, California
I'm not a designer or an expert at all in this area but to me the shells mech:

1) Uses concentric spheres.
2) All volume is filled by pieces (if there are "bubbles" it is because those pieces weren't needed and were deleted).
3) Is defined by a 2D sketch that defines the circles and other cuts that are revolved to generate the spheres and shapes of the pieces.

It just so happens that to get the cuts of the outer portion of the puzzle rather deep cut you might need to have inner pieces cut out of an inner spherical shell that hold those outer pieces in place and those inner pieces correspond to the pieces of a shallower-cut version of the puzzle.

_________________
Prior to using my real name I posted under the account named bmenrigh.


Top
 Profile  
 
 Post subject: Re: Mass Produced Shells Mechanism Puzzles?
PostPosted: Thu Dec 08, 2011 7:37 am 
Offline
User avatar

Joined: Wed Oct 01, 2008 2:39 pm
Location: Marquette, MI, USA
:? *sigh*

It seems that so many things dealing with puzzles are very hard to define.

Despite what the shells mech may or may not actually be defined as, when I think of the shells mech I think

Consists of 2 or more concentric circles building up a "deeper cut" puzzle generally resulting in other common puzzles being hidden inside the mechanism.

thats basically the simplest way I can think of it. I am not sure if this makes even layered puzzle part of this or not.


Top
 Profile  
 
 Post subject: Re: Mass Produced Shells Mechanism Puzzles?
PostPosted: Thu Dec 08, 2011 8:30 am 
Offline
User avatar

Joined: Sat Jan 16, 2010 11:48 am
Location: In Front Of My Teraminx (saying WTF?)
Rubik's brand 5x5
Dogic
Eastsheen/rubiks/lanlan/V --> 2x2

_________________
My Shapeways Shop!
My Designs
My Official Results
My Website on Twisty Puzzles with Gears

Grégoire Pfennig


Top
 Profile  
 
 Post subject: Re: Mass Produced Shells Mechanism Puzzles?
PostPosted: Fri Dec 09, 2011 3:26 am 
Offline
User avatar

Joined: Thu Dec 21, 2006 5:32 pm
Location: Bay Area, CA
RubixFreakGreg wrote:
Rubik's brand 5x5
Eastsheen/rubiks
The Rubik's and ES 5x5x5 are cylindrical, not spherical in their mechanism. Although perhaps built of nested cylinders, that isn't what is commonly considered the shells mechanism (spherical).

Dave

_________________
Image
LitwinPuzzles.com has info on my puzzles.


Top
 Profile  
 
 Post subject: Re: Mass Produced Shells Mechanism Puzzles?
PostPosted: Sat Dec 10, 2011 2:35 am 
Offline
User avatar

Joined: Mon Oct 18, 2010 10:48 am
If I'm not mistaken, the dioctipoid (hoping I didn't mutilate the spelling) is shell-based.

_________________
++Noah (NType3 here, Emrakul elsewhere)

Moderator for Puzzling Stack Exchange - a new site for specific puzzling questions!


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 12 posts ] 

All times are UTC - 5 hours


Who is online

Users browsing this forum: No registered users and 10 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  

Forum powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group