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Rubik's Magic Cube

by Nudel_P, published

Rubik's Magic Cube by Nudel_P Apr 15, 2010

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Description

A Magic Puzzle Cube.

The cube in the thumbnail is printed by Robo thingiverse.com/Robo . Thank you very much Robo! See comments for details.

I don't have my own printer, yet, so I'm not able to test this model myself. Feel free to modify anything so we can have a printable, working cube.

When the cube is functioning mechanically, perhaps we can distinguish between the sides without colors? See corner_color for an example.

My 3D background is from image and animation rendering, where it's important to maintain quads and avoid many edges meeting in a vertex. I don't know if it matters much in 3D printing? The flat sides on the pieces are 20 Wings unit wide/high/deep, which should equal to 20mm.

EDIT: I split the side and the corner (diagonally) in two parts to make it printable, but it needs to be glued together afterwards. Files updated.

EDIT2: "v2" New side and corners, resting on side. Scaled 10x from before.

EDIT3: "v3" Side piece turned the right way this time. Raft and flat bottom version of axis. All new objects combined in one Wings3D file for less clutter.

EDIT4: April 17. 2010 - Robo printed the first working cube!

EDIT5: "v4" Updated the corner piece with smaller connection part and beveled edges/smoothing (polygons went from 67 to 3432). Would love feedback and thoughts on this.

makezine.com/go/makerbot

Recent Comments

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Hi!
The pieces won't snap together, you need screws and springs to assemble it. You can find screws and good cores on ebay, search for "rubiks cube core set" or similar.
I can't recall what printer it was printed on, I think Robo had a cupcake back then, but you can read the old comments to see. Remember that was four years ago, and home 3D printing was very young, so don't judgde old prints on apperance. :)
Thanks for your interest in my old design, I really have to print one myself soon.

by the way, what kind of printer made the cube on the 3rd picture (really really low res)

I might make a Rubik's cube eventually but if i do the pieces will snap together, or i could edit your file

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Instructions

Modeled in Wings3D wings3d.com original sources files included. cube_WIP.wings features a assembled cube for test fitting the pieces.

The challenge is to deal with overhangs, find a good solution for the screws and springs and of course make it rotate well.

I've made individual files for every part, some cleanup, smoothing and drilling is probably required.

The screws needs to have threads only in the part which screws into the axis, so the center pieces can rotate freely. Perhaps it's possible to file off the upper threads one some screw? Springs is not critical for the basic mechanical function. See the attached picture for original screw, as well as an idea that might work without filing.

You need the following number of parts.
1 axis
6 centers
8 corners
12 sides

Comments

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Zackalegomaniac on Feb 26, 2014 said:

by the way, what kind of printer made the cube on the 3rd picture (really really low res)

Nudel_P on Feb 26, 2014 said:

Hi!
The pieces won't snap together, you need screws and springs to assemble it. You can find screws and good cores on ebay, search for "rubiks cube core set" or similar.
I can't recall what printer it was printed on, I think Robo had a cupcake back then, but you can read the old comments to see. Remember that was four years ago, and home 3D printing was very young, so don't judgde old prints on apperance. :)
Thanks for your interest in my old design, I really have to print one myself soon.

Zackalegomaniac on Feb 26, 2014 said:

I might make a Rubik's cube eventually but if i do the pieces will snap together, or i could edit your file

Robo on Apr 17, 2010 said:

Got it!!!!!!!!!!!!!!!!!!!!!!!!!!!!! The first printed Rubik's cube in the Thingiverse, possibly in the universe.

It is not the smoothest running Rubik's cube. Actually it doesn't run as bad as I imagined.

Just used wood screws. I did not have the-high tech bolts and was too lazy to get them. I had to make the holes in the axis 3mm and the ones in the center-stones 4mm.

Nudel_P did a great job! There may be some improvements, but you made something that works and without testing it in real life.

Nudel_P on Apr 17, 2010 said:

Impressive Robo!!! Thank you so much for printing the model and giving feedback. I quite honestly can't believe this! :-D

The screw is only a spare I have left over, but if you send me your snail mail address to vindusviskeren {at} gmail.com I'll send you a set of cube stickers for your cube, on my cost of course.

Looking at your cube I have some improvements in mind for the model, especially making bevelled edges
and a bit smaller connection stone for the side piece.

I set your completed cube as thumbnail picture, hope it's okay.

Haha :-D This is so great!

Robo on Apr 15, 2010 said:

I've printed the corner stone.

It took me about one hour because:
- I had to scale it up 10x, it was 2mm in size.
- Then I turned it 45deg twice to put it up to its (inner) corner.
- Then I added a pedestal.

As you can see I had no problem with overhang.

Can you scale the objects and turn them in the right direction and then
give it a small flat bottom? Then I think it is printable and you'll see photos of fully assembled copies turning up here pretty soon.

P.S. the side stone should be at 45 deg (once) with the outer corner turned downwards.

Nudel_P on Apr 16, 2010 said:

That... is... extremely awesome!

Added new models of the corners and sides like you suggested, it really didn't occur to me to build it standing up like that. Brilliant!

I also scaled the model 10x in wings, and added scaled models of the axis and center piece as well. Hope it helps.

Will clean up old files when new files are c
onfirmed to be working.

Thanks!

MarcusWolschon on Apr 15, 2010 said:

http://www.thingiverse.com/ima...
does not look printable that way.

Nudel_P on Apr 15, 2010 said:

Well, no. I was unsure on how to make the support structure properly.

http://www.thingiverse.com/ima... have the pieces with support.

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