Magnets thread

Discussion in 'Puzzle Building, Modding, & Designing' started by Rcuber123, Nov 12, 2016.

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  1. One Wheel

    One Wheel Member

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    I'm trying to find a tool for placing magnets, and I'm wondering if anybody has seen something that will work. I think there needs to be a flat plastic (or other non-magnetic) sheath with a bump on it to keep the magnets in place, and a retractable ferrous core. Almost like one of those disposable plastic box cutters, but the end would have to be no more than about 3.8mm wide to fit into the pieces. I think with this tool I could probably place all the magnets in a 6x6 in something like 2 hours. I'm sure such a thing exists, but where do I look for it? I've done 3 magnetic 6x6s with a combination of a screwdriver, a utility knife, plastic picnic knives, and a pair of homemade wooden tweezers, and there's got to be a better way.
     
  2. I magnetize mostly 3x3s, well, because they're cool and that's what I grew up with, and I've done 2x2s and 4x4s, but 5x5 is completely brand new to me. Is this pretty much the way folks are laying out the magnets in their 5x5s? IMG_5606.JPG
     
  3. One Wheel

    One Wheel Member

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    I can't tell if that's showing 2 magnets in one half of a wing, but if it is that's unnecessary. The wing/midge magnets don't significantly affect the corner/wing magnets, so the relative polarity of the two sets doesn't matter. Just put one magnet in each midge half, so each half is identical, match one type of wing half to the midge, and match the other type to the corners.
     
  4. JohnnyReggae

    JohnnyReggae Member

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    I've done 2 5x5's so far and I've used the same configuration for both as in the attached pic ... They both have turned out quite well.

    20170917_185956.jpg

    Edit: for each "line" the polarity travels in the same direction
     
    DMCubing likes this.
  5. One Wheel

    One Wheel Member

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    That's exactly what I was trying to describe as far as placement. Do you think relative polarity of the two sets of magnets actually makes a difference?
     
    DMCubing likes this.
  6. mitja

    mitja Member

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    I think you are all correct. If you assemble the edge and midge of Johnny Reggae's image, you get what DMCubing did.
     
  7. I'm afraid I don't understand your terminology, "midges" and "wings". Which, specifically, are these cubie pieces? Thanks.

    When I first sketched this out I noticed I had some redundancy which would have totaled to 144 magnets, but eliminated those magnets, giving me now a total of 96 magnets required. I'm guessing this is correct. Again, I'm completely new to 5x5.
     
  8. One Wheel

    One Wheel Member

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    96 magnets is correct. 144 is what I do for 6x6 and 7x7. The way I'm using the terms "midge" is the middle edge, "wing" is the piece between the midge and the corner.
     
    applezfall, DMCubing and Ghost Cuber like this.
  9. Ghost Cuber

    Ghost Cuber Member

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    I don't quite understand the terminology either, but I think a wing is an outer edge and a midge is a center edge. However, I do know that 96 magnets is correct.
     
    DMCubing likes this.
  10. Thanks!!! Yeah, I didn't know that. I appreciate it!!!
     
  11. One Wheel

    One Wheel Member

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    No problem. Not sure where I first heard the terminology, but I've run across it recently in some videos I've watched on 4BLD and 5BLD. By extension 6x6 and 7x7 have inner and outer wings.
     
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  12. JohnnyReggae

    JohnnyReggae Member

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    I assume it does as the cube feels "solid" when turning. There doesn't seem to be any turns that are not the same around the whole cube.
     
  13. mitja

    mitja Member

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    I have one 5x5 with polarities not in line. So if you take Johnny's line on photo it goes N S S N . But all over the cube. It still works Ok. There is no repelling pieces, the "otside" magnets do not interact with "inside" magnets.
    My bigger isue is, how to make qiyi 5x5 as good as 4x4. From design point of view 5x5 should be better but for now 4x4 magnetic Wuque is the best cube I ever had including 3x3's. I believe, if I would combine different spring and screw lenght it would get better, just never had time to try enough different combinations.
     
  14. Can someone draw a picture like this but for how magnets are placed in a 6x6?
     
  15. One Wheel

    One Wheel Member

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    It's hard for me to upload a picture, but I'll take a shot at a diagram. This is if you look at each edge, from one corner to another:
    3x3:
    | +|- | |
    | | -|+ |

    4x4:
    | +|- -|+ | |
    | | +|- -|+ |

    5x5:
    | +|- | -|+ | |
    | | +|- | -|+ |

    6x6:
    | +|- | +|- -|+ | |
    | | +|- -|+ | -|+ |

    7x7:
    | +|- | -|+ | +|- | |
    | | +|- | -|+ | -|+ |

    Does that make any sense? I've never done a 2x2, or anything bigger than a 7x7, but if you can figure out these chicken scratches you should be able to magnetize any size cube. If you'll note, a 6x6 is basically a 4x4 and a 5x5 put together.
     
  16. Mcube90

    Mcube90 Member

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    One question about glueing the magnets:
    I see some people put glue on the plastic and then place the magnet onto the glue and some people put the magnet against the plastic first and then put glue over it. Is one way better than the other? Because I find it easier to place the magnet first and then put glue over it. The magnet would also come closer to the plastic if there is no glue in between the plastic and the magnet, but the layer of glue is maybe too thin to make any difference anyway.
     
  17. I've tested this. The notion of assuming that enough glue will end up under the magnets by placing the glue last is false. The extremely thin layer of glue that you'll end up with won't be strong enough to handle the rigors of cubing. You're better off having a little glue under the magnet, then over the side and top of the magnet. The idea is to have the magnet encapsulated in glue. Some people are very hard on cubes, slamming them down onto hard surfaces. You need your magnets glued as best as possible.

    It's also advisable to use a cotton swab and clean the factory lube off the interior of the cubie pieces with rubbing alcohol. This improves the bond. There's more lube inside the pieces than you'd think.

    I often score (scratch and rough up) the areas where the magnets are placed after I've cleaned the lube off to improve the bond.

    As carefully as I am with gluing, I've still had people loosen a magnet in one of my cubes.
     
  18. Mcube90

    Mcube90 Member

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    I never expected that any glue would end up under the magnet when putting the glue last. I thought it was enough that glue was covered around the magnet and not necessarily under the magnet. I magnetized both my 2x2 and 6x6 this way and after the glue dried I tried to rip out the magnet and it was pretty rock solid, it would require some immense force to dislocate the magnet at that point. But maybe it gets weaker by time. I used a lot of glue though so I was sure that the glue made contact to the plastic all around the magnet. But yeah, I guess it's safer and better to put the glue first and then place the magnet on top of it.
     
  19. mitja

    mitja Member

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    I put glue always under and over the magnet. First, I place the two magnets, then slide them away, apply glue on the plastic, slide magnets back into correct position and put glue over them. It is much harder work, but I managed to speed up the procedure and never had a loose magnet. I always use slow drying gel ( Loctite with 60s drying time) superglue, that allows to place magnets. With this gel you better wait at least 3-4 hours before assembly.
     
  20. ThatCuberKoko

    ThatCuberKoko Member

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    Basically I just want to know what y'all think on adding magnets to cubes like the MF3RS2?
     

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