THE MAGNETIC DOT ENCYCLOPEDIA

Hexagonal Grid Octagon (two layer) Like

by: Damian Follow


The layers of this shape are interesting just by themselves, and can be made separately. Note that the outer layer is not constructed the same way as the single layered triangular grid shapes in my previous tutorial here on dotpedia, although it is very similar looking.

912 is the number of dots for the smaller version of the octahedron


Small version
This one is 912 magnets



This is related to by quite different to my previous tutorial on 'triangular grid' shapes,


Subunits


part of second layer attached



6ring with three 3triangles

























Make a row like this :::::::::::: , and keep twisting it to make the row of little triangles. Loop four of them as shown for each crown.



the peaks of the crown go into the centre of each side of the square at the apex.



Put spacers into the holes as shown (4 places). This stops the balls above the spacers falling down when the top 4 balls are removed (quite tricky).



The balls above the spacers should snap together ...


... like this













Comments

  • Balgore - 3 years ago
    Wow that is some crazy stuff. Great tutorial. How many dots is the large one lol?
  • EdoTimmermans - 3 years ago
    I love the 'giant squid'!
  • Damian - 3 years ago
    Balgore, I didn't count, but it should scale up pretty nearly with the square of the side length, which is roughly in a ratio of 11 to 7, so there are about 121/49x912, so something near 2250 magnets, in the larger one.
    Edo, I have no idea what your comment means. This is an octahedron! Are psychodelics also legal in The Netherlands? :-) Your recent giant chain construction on youtube is amazing btw.
  • EdoTimmermans - 3 years ago
    Hi Damian, I wasn't referring to the octahedron but to the shape surrounded with stones, that is shown on the last 3 pictures. I didn't need to use magic mushrooms to see a squid in that shape ;)
    Many mushrooms are illegal now in my country, however some with milder effects are not on the list of banned species, according to the present information on www.amsterdam.info/drugs/ .
    And thanks for your comment on the chain! :)
  • eitantal777 - 1 year 2 months ago
    yay! built one of those with MicroMagnets. Took the whole weekend & a precision of a brain surgeon. Thanks for the design!
  • Damian - 1 year 2 months ago
    No problem Eitantal777 - glad to see somebody making it! Did though post a video or photo somewhere?
  • eitantal777 - 1 year 2 months ago
    I wouldn't want to post an already existing design into dotpedia. http://imageshack.com/a/img924/8861/IWKqhD.jpg
  • Damian - 1 year 2 months ago
    Eitantal777, post it here, nobody cares especially if you reference the original. BTW I have some other instructions here: https://www.flickr.com/photos/obiter/albums
  • Gustoph - 1 year 1 month ago
  • Gustoph - 1 year 1 month ago
    This octahedron is quickly becoming my favorite shape to just whip together! I can manage the smaller 4-set octahedron in under 15 minutes, and the 7-set version in under 25 minutes! I did make one larger version using two different color mandala sets, one glow in the dark green and one silver Zen Magnets, however it didn't take all 16 sets... I had 4 sets left over that were unused.
    Now that I've got the hang of this design, I'm SUPER CURIOUS about that three legged tower that's also in the picture. What do you call that design, and do you have a tutorial for it or know of a good explanation of the math and geometry involved somewhere on the internet?

    Thanks for the awesome explanation and step by step tutorial for those of us who aren't as magnetically gifted as you! This design is one of the more intricate ones that I've really got the hang of building, and for that I'm extremely grateful! Thank you for your upload!!!
  • Damian - 1 year 1 month ago
    @gusting i have a tutorial for the bendable tube here: https://www.youtube.com/watch?v=basdytzHT-c
    And the top is the same as the corner tutorial here: https://www.youtube.com/watch?v=nL68tjCK6dY
    That time is much faster than I can make it BTW! I'm quite interested in seeing a photo or video if you have one.
    Where you saying that I overestimated the number of magnets?
  • Gustoph - 1 year 1 month ago
    I just uploaded my pictures of this octahedron with a two layer hex grid. I hope it lives up to your expectations, since you are the original designer of this mind blowing shape! Thanks again for uploading both the design and the tutorial. The tutorial gives people like me a real shot at building your complicated yet enticing shapes! Thanks again!!!
    http://dotpedia.com/creations/view/2992/