4x4x6 Cuboid Twisty Puzzle

by TomZ, published

4x4x6 Cuboid Twisty Puzzle by TomZ Jul 10, 2011
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The 4x4x6 cuboid was first built by Tony Fisher from a regular Rubik's 4x4x4 in 2004. Joshua Bell commissioned the design of an open source 4x4x6 design in 2011.

The design for this puzzle is really quite complex and the supplied STL files are probably only printable on high-end printers such as Shapeways' SLS printers. Nevertheless, I hope the SolidWorks file will still be useful to many for learning the art of puzzle design or making derived puzzles.


The parts provided in the STL files have a wall thickness of 0.7mm, so they can probably only be printed in Shapeways' WSF material or on some other high-end printers.
For your convenience, you can order a pack of all the parts required to build this puzzle at Shapeways: http://www.shapeways.com/model/291445/4x4x6_cuboid___open_source.html
To assemble the puzzle, you will need 6 M3 screws (4-40 machine screws might work as well) and some M3 springs (about 10mm long). Using some small washers is recommended, and applying some silicone lubricant will improve turning of the puzzle a lot.
Additionally, I can sell you an assembled copy of this puzzle. Contact me at [email protected] for this service.

To open the SolidWorks file, SolidWorks 2011 or higher is required. I have tried to keep everything nicely organized in folders so the structure of the file is as clear as possible.

A zip file containing all the STL files is supplied for easy downloading (it's right at the bottom of the list).

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I just finished printing all the parts, and found a youtube video online of how to assemble it, but how do you assemble the core? Where do the springs go? What length are the M3 screws? And the notches in the parts you're supposed to screw into, is there a special order for them?


John Santoro

Tony Fisher made a (dis-)assembly video of the mass-produced version of this puzzle. Please see https://www.youtube.com/watch?v=j1GD1SbRz90.

Thanks, that helped a lot. But, it still doesn't answer my questions on how long the M3 screws are and where the springs go?


John Santoro

Maby there's a video link you can direct me to?

do you mind upload design tutorial of helicopter on youtube?

What helicopter? This is a Rubik's cuboid.

how does the core in relation to the centers turn. I see two notches on the centers and two notches on the core. Won't it not turn? Maybe I'm wrong because I haven't downloaded the file yet. I think I'll download the file and see for my self. The puzzle looks amazing anyways.

The centers are made of two parts, a fixed "axle" part that is fixed to the core and cannot rotate with respect to it, and a second part (that actually forms the center) that can rotate around the axle. The reason for this is that the 4x4x6 has hidden internal layers, and the fixed axle part is needed to prevent the hidden layers from rotating.

Thank you I was second guessing this cube but now I am going to do it.

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sooooooooooooooo much suport ............It will be worth it in the end

Nice work!

How did you export the STL files from Solidworks? I'm going to build a Reprap Mendel when i'm done with this semester's exams, and i'd like everyone from my university to be able to use it. Solidworks is the main CAD software everyone knows and uses (free student's edition), and i haven't found a way to export or convert SLDPRTs to STL or any other format i could convert to STL.


I'm not sure, but I might have heard you can't export to STL from the student edition. But in case I'm wrong, it's as easy as doing as "Save As" and selecting STL as your filetype.

You're right, i hate it how much they lock down the Student's Kit. However, shapeways has a tutorial about exactly this topic - you can save any SLDPRT as .stl in eDrawings. That reminds me of one of those programs that say "pay 90$ now to get rid of this popup!". Except that it's more like 1500$ with solidworks...

do you think you could say how many pieces to print to make the cube?