I still have a silver and gold yoshimoto cube from the early 80's, it still gets picked up often. You can make some interesting little designs with them. Great work getting them fit.
I'll be getting a 3d printer in the next few months, and so many of your videos can be made into prints. I have to remember this one, it looks so fun to do!
You are very welcome. Give it a shot- once you have the little pyramids in front of you, it will start to make more sense. Overwhelming problems are never so bad when you just look at them a piece at a time. It is only wood with 45 degree cuts and tape.
to make 6 identical pieces, you could also cut the cube into thirds vertically, then in half horizontally, but I guess the 6 pyramids are more interesting
That is a great point, and to be honest, I don't think that it has ever occurred to me before. You could make a simple puzzle from that concept; although the pieces are identical in geometry, they could each have a unique face design. Further, you could give each an attachment magnet or two, each with its own unique position and polarity.
They are, but they don’t have rotational symmetry in that axis/plane, so trying to make a puzzle like this is more interesting. Plus, the inside pattern is cooler. Cool idea, though.
1. Install a piece of wood to the existing fence of your miter saw that acts as a zero-clearance fence (see my dry erase board vid). 2. Make a single 45° cut into the new fence. 3. Cut one miter on the end of your stock with the bottom against the fence. 4. Flip stock around, without adjusting miter saw. 5. Find the "sweet spot," the place where both miters meet at the point. 6. Pencil mark that spot on the fence. 7. Rinse, repeat. 8. Refrain from asking me to send you things in the mail.
(In reply to your message) Glad I could help. I will put a link in the description to an image that shows where the connections are located. That should help a little with making one- it is a bit of a brain-twister.
1. Set table saw to 45. 2. Rip-cut one side of a 2x4 or 2x6. 3. Flip piece around, keeping square side against fence. 4. Adjust fence until both 45 cuts meet at the maximum thickness of the stock. 5. Use miter saw to cut remaining angles into your triangular stock. If your miter saw is not compound, place the bottom of your stock against the back of the fence when making your 45 cuts.
Oh, this is great. I´m not sure if I´m gonna try to replicate this project for myself - my brain starts to hurt. ;-) No, I´m kidding, I think I´m gonna give it a tr. This is absolute worth to put some tons of effort into it, try to figure out what it even is and making it work. Thank you for showing this amazing geometrical mechanizm.
I had a plastic version of this in 1981. The brand/product name was "Shinsei". Incidentally, if you glue the six little pyramids on the outside of another cube the same size, you get a rhombic dodecahedron, and the spiky shapes that combine to make the cube are technically stellated rhombic dodecahedra.
so, with the cube inside the cube that folds into a 2*4 rectangle, or a cub, that means that you could theoretically make a larger scale version and just invert a side or 6 to maybe make a 4*4 (which would really be 8*8 because each square would be 2 to be dividable into anything else) cube that has what i estimate could be 16 little cube foldables inside?
Ummm... I think so? I will tell you this: the stellated rhombic dodecahedron does tessellate space. In other words, these can be stacked without air space, even when they aren't in a cube form. en.wikipedia.org/wiki/First_stellation_of_rhombic_dodecahedron
hey i tried to make the pyramids but with the miter saw i have it has a large space between each point and i can't make a very detailed cut i was wondering if u could send me some pyramids that u made by mail bcuz i cant get each pyramid to b the same as each other so they all r always not even
hey I made some pyramids put it is hard to make them perfect I was wondering if u could send me a finished cube by mail bcuz it is hard to cut them all perfect
The faces are equilateral triangles. The polyhedron you're trying to make is called an _equilateral square pyramid._ Each pyramid is 1/6 of a cube. Though its geometry appears complicated, with respect to making it, it's quite easy. Relative to any of the square's edges, the angle of inclination is simply 45°. What I'm trying to say is that you can just rip 45° stock with a table saw, rip it again along its opposite edge to make right-triangular stock, and then miter-cut (also at 45°) each of the two remaining edges from this stock. If you're constructing this with modelling software and/or attempting to 3D print it, I'm the wrong person to ask for help. Either way, let me know if you have any success.
thanks! i finally deduce(?¿¿) and understand the angleof the triangles or pyramids is 45º. inst it? no no i do. sorry for my fakin inglish. greetins from Uruguay
my guess, before watching the rest of the video, is that the six pieces will all be shaped like pyramids with all the points in the center of the cube. here goes :)
Maybe not, the thing that seems to be unique about a cube is that you can stack them to make a larger cube. I could see something like this being possible with a tetrahedron as you can configure a tetrahedron comprised of smaller tetrahedrons... but not so sure about a dodecahedron... though you could probably come up with *something* interesting cutting it into segments and hinging them in a similar manner....
I still have a silver and gold yoshimoto cube from the early 80's, it still gets picked up often. You can make some interesting little designs with them. Great work getting them fit.
I'll be getting a 3d printer in the next few months, and so many of your videos can be made into prints. I have to remember this one, it looks so fun to do!
I would love it if you would make these to sell. The weight must be so much better! Thanks for the video!
Now that is awesome! I'm glad you pointed me to this video. Seriously cool. I must try to make some! Thanks again.
You are very welcome. Give it a shot- once you have the little pyramids in front of you, it will start to make more sense. Overwhelming problems are never so bad when you just look at them a piece at a time. It is only wood with 45 degree cuts and tape.
to make 6 identical pieces, you could also cut the cube into thirds vertically, then in half horizontally, but I guess the 6 pyramids are more interesting
That is a great point, and to be honest, I don't think that it has ever occurred to me before. You could make a simple puzzle from that concept; although the pieces are identical in geometry, they could each have a unique face design. Further, you could give each an attachment magnet or two, each with its own unique position and polarity.
They are, but they don’t have rotational symmetry in that axis/plane, so trying to make a puzzle like this is more interesting. Plus, the inside pattern is cooler. Cool idea, though.
1. Install a piece of wood to the existing fence of your miter saw that acts as a zero-clearance fence (see my dry erase board vid).
2. Make a single 45° cut into the new fence.
3. Cut one miter on the end of your stock with the bottom against the fence.
4. Flip stock around, without adjusting miter saw.
5. Find the "sweet spot," the place where both miters meet at the point.
6. Pencil mark that spot on the fence.
7. Rinse, repeat.
8. Refrain from asking me to send you things in the mail.
(In reply to your message) Glad I could help. I will put a link in the description to an image that shows where the connections are located. That should help a little with making one- it is a bit of a brain-twister.
Could you refresh this video by coloring your hinges in red or some other contrasting color?
1. Set table saw to 45.
2. Rip-cut one side of a 2x4 or 2x6.
3. Flip piece around, keeping square side against fence.
4. Adjust fence until both 45 cuts meet at the maximum thickness of the stock.
5. Use miter saw to cut remaining angles into your triangular stock. If your miter saw is not compound, place the bottom of your stock against the back of the fence when making your 45 cuts.
Oh, this is great. I´m not sure if I´m gonna try to replicate this project for myself - my brain starts to hurt. ;-)
No, I´m kidding, I think I´m gonna give it a tr. This is absolute worth to put some tons of effort into it, try to figure out what it even is and making it work. Thank you for showing this amazing geometrical mechanizm.
I had a plastic version of this in 1981. The brand/product name was "Shinsei". Incidentally, if you glue the six little pyramids on the outside of another cube the same size, you get a rhombic dodecahedron, and the spiky shapes that combine to make the cube are technically stellated rhombic dodecahedra.
pretty sure you end up with an octahedron if you glue pyramids onto the face of a cube... unless I misunderstood what you were describing.
Ooh, a sped up version of What's Up by Five Non-Blondes. Nice.
Super neat!
How much would you charge to make the 48 little pyramids, then ship them to me?
these are so much fun to play with. way popular for a good reason
incredible how it can fold into so many different directions and not stop itself
so, with the cube inside the cube that folds into a 2*4 rectangle, or a cub, that means that you could theoretically make a larger scale version and just invert a side or 6 to maybe make a 4*4 (which would really be 8*8 because each square would be 2 to be dividable into anything else) cube that has what i estimate could be 16 little cube foldables inside?
Ummm... I think so? I will tell you this: the stellated rhombic dodecahedron does tessellate space. In other words, these can be stacked without air space, even when they aren't in a cube form.
en.wikipedia.org/wiki/First_stellation_of_rhombic_dodecahedron
hey i tried to make the pyramids but with the miter saw i have it has a large space between each point and i can't make a very detailed cut i was wondering if u could send me some pyramids that u made by mail bcuz i cant get each pyramid to b the same as each other so they all r always not even
where can i get one of these?
These for sale in stores?
I can't afford woodworking equipment...
how did u cut the pyramids because i tried to but i cant do it make a video on how to cut the pyramids pls i would rlly b happy if u did
hey I made some pyramids put it is hard to make them perfect I was wondering if u could send me a finished cube by mail bcuz it is hard to cut them all perfect
Is each pyramide's face composed by an scalene triangle? Because I am trying it with isosceles faces and it Is not working. Please help me! Thanks
The faces are equilateral triangles. The polyhedron you're trying to make is called an _equilateral square pyramid._ Each pyramid is 1/6 of a cube.
Though its geometry appears complicated, with respect to making it, it's quite easy. Relative to any of the square's edges, the angle of inclination is simply 45°. What I'm trying to say is that you can just rip 45° stock with a table saw, rip it again along its opposite edge to make right-triangular stock, and then miter-cut (also at 45°) each of the two remaining edges from this stock.
If you're constructing this with modelling software and/or attempting to 3D print it, I'm the wrong person to ask for help. Either way, let me know if you have any success.
What about four even square slices?
Awesome 👍
how many triagles are used to make di cube?
Nuttso I don't understand your question.
Nuttso its made of 4 cubes, each cube is made with 6 "triagles''. i hope you can do the math from here
Nuttso it uses 48 for sided piramids not triangles. Imade this cube out of paper
What a very cool thing
Cool but hard. I wish i knew u so you could make me one!
link is down
can you please reupload it?
Fixed it. Thanks.
Thank you, Sir. =)
thanks! i finally deduce(?¿¿) and understand the angleof the triangles or pyramids is 45º. inst it? no no i do. sorry for my fakin inglish. greetins from Uruguay
Picture is no longer available :(
Thanks, I will fix it. Check back tomorrow if you still need it ;)
Thanks :)
Epic!!!!
♥.♥ Thanks.
my guess, before watching the rest of the video, is that the six pieces will all be shaped like pyramids with all the points in the center of the cube. here goes :)
+Andrew ey I hasn't wrong! nice
So, you could do this to other platonic solids, ya?
Maybe not, the thing that seems to be unique about a cube is that you can stack them to make a larger cube. I could see something like this being possible with a tetrahedron as you can configure a tetrahedron comprised of smaller tetrahedrons... but not so sure about a dodecahedron... though you could probably come up with *something* interesting cutting it into segments and hinging them in a similar manner....
Turns out there is an octahedron in the middle of a tetrahedron... not sure what to do with it yet. Icosahedron has potential too...
Oh I thought you were going to cut the cube into 6 cuboids!
nice Merkaba
I made the same stuff in 1993....
do i hear he-man music in the background :3
+Hermann Fegelein heyeahyeahyeah!
It isn’t he man, it’s the original song
My brain is burn!!
Challenge accepted
And i say hey yeah yeah yeah yeah hey yeah yeah i say hey what's going on
At the end of the day it's a. Cube
I've get the concept, a damn good one. But whats the point.'
Scott Varena nothing has a purpose or point quit hunting for meaning and just enjoy the world
heyyeyaaeyaaaeyaeyaa
but not put in first line
actually don't send finish one just send me the pyramids then I will tape them