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Magnets thread

Joined
Jul 23, 2018
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N50 4x2 is ridiculously strong for any 3x3, provided they are the real deal (since many sellers on eBay will actually end up being N35, anyway). N35 4x2 will be far too weak for the GTS2 due to how thick the plastic is in that cube. In general, you want strong magnets for fast cubes and weaker magnets for slower and controllable cubes. The GTS2 is on the faster side, so I believe the best magnets for that cube would be N42 5x1, but you'd have to buy that at special magnet shops online such as Gaussboys if you're based in the US. The feeling of that magnet is strong, but not overbearing, and due to it being wider than 4mm discs, they feel a lot smoother and less bumpy or snappy.
OK, so where can I get this type of magnet if I am not in the US? I searched eBay, and the closest I could find was N42 5x2mm, and N42 5x1.4mm. Do you think this is fine? Or is it too strong as well? I also found N50 5x0.5mm and N35 5x2mm.
 
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Joined
Apr 17, 2018
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OK, so where can I get this type of magnet if I am not in the US? I searched eBay, and the closest I could find was N42 5x2mm, and N42 5x1.4mm. Do you think this is fine? Or is it too strong as well? I also found N50 5x0.5mm and N35 5x2mm.
You can find N42 5x1 on AliExpress.
You can also find N45 5x1 on Supramagnets. They're from China, so surely they'll ship internationally. The difference in strength from N42 5x1 is hardly noticeable to basically negligent.
 
Joined
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The magnets I recently ordered from FastTech just arrived, and it's finally time to make all of my remaining non-magnetic puzzles magnetic!

Just a quick note for anyone else ordering from FastTech: the actual sizes of the magnets seem to be about 15% smaller than the listed sizes.
- "4×1.5" is actually 4×1.30
- "4×2" is actually 4×1.71 (this is closer to 1.5 than to 2, lol)
- "5×1" is actually 5×0.83

I think @One Wheel mentioned that 4×1.5 won't fit in the Wuji's corners, but hopefully these 4×1.3 magnets will fit? (Worst case is that they don't fit and I don't magnetise the outer layers, I guess.)

---

On a mostly unrelated note, have people tried magnetising the internal edges of a 4×4×4?
So, I tried this on a spare Wuque, with the 5×0.8 N52 magnets in the internal edges and 4×1.7 N38 in the wings. (I earlier mistakenly assumed that the internal edges would fit 1-mm thick magnets, but they don't. Just as well that the magnets I got were actually slightly thinner.) Way too weak, barely even noticeable. The plastic gets in the way of making the magnets perfectly aligned, so it looks like this (side view; not to scale). I used Blu Tack rather than glue for these magnets, so I can remove them and try modding the pieces to make the alignment better, although I don't really expect this to change much.

Also, as the magnets are significantly closer to the core (compared to how the inner/inner layers are usually magnetised), that also means less torque for the same amount of force.

Up next: Wushuang M, then Wuji M.
 
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Joined
Feb 20, 2017
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I magnetized some MF3RS3s:

cubicle lite edges (4x1 N48) and strong corners (5x1 N48)
4x1.5 N38 throughout
cubicle strong (5x1 N48) throughout

Order above is from weakest to strongest with 4x1.5 N38 and cubicle strong throughout being similar. 4x1.5 N38 is the 'recommended' strength and fits in the slots whereas with the other combinations I tried you have to install the magnets on the opposite side.

I lubed all 3 cubes identically with black on the core, a generous helping of dignitas, a few drops of lubicle-1, and silk.

This cube benefits from break in - it speeds up. The lubes take away the scratchy feeling it has out of the box.

What magnet strength do I recommend? I like all three, but 4x1.5 N38 has a slight edge for me overall. If you prefer to keep more flexibility lite edges and strong corners works well. I don't think I'd want it lighter than that. It would be interesting to try 4x1 N52 edges, 5x1 N52 corners as well as 4x1.5 N38 edges, 4x1.5 N42 corners (to average into an N40). I don't know where to find these strengths unfortunately.

I love this cube - I was a big fan of the soft feel and controllability of the MF3RS2 but I like the added stability of the MF3RS3 and really enjoy solving on it.
 
Joined
Feb 20, 2017
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Update on MF3RS3 magnetization efforts - I ordered 5x1 N52 and 4x1 N52 from gaussboys to try a variation on the cubicle lite edge, cubicle strong corner combo. I like having the 4x1 magnets in the edges to make M slices easier, less mass!
 
Joined
Dec 24, 2015
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Having played a bit more with my internal-edges-magnetised Wuque, I think I see one (possibly major) problem here, beyond the fact that the magnets I used weren't strong enough.

On, say, the Valk 2, doing edge-corner magnetisation is good because the core is tightly locked to one side of the puzzle. However, on the Wuque (and the Wuhua, and maybe also other big cubes from other brands), the core can get misaligned by quite a fair amount. When making a wide move, half of the time the magnets will make the internal edges lock to the correct side, but half of the time they'll lock to the wrong side. The result is that a wide turn can feel something like this:

initial: magnets lock the layer in place, so you need extra force to initiate the turn
1 degree into the turn: internal edges happen to be locked to the wrong side
1 more degree into the turn: need extra force to separate the internal edges from the wings again

Internal edge + wing magnetisation is not fundamentally impossible, but I don't think it'll be effective on the Wuque. (Will the Valk 4 feature this? I mean, Qiyi did use internal-edge magnetisation on the Valk 2.)
 
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xyzzy, you placed magnets inside "big" internal piece and bottom of the wing? And what about corners in such setup?
Yeah, magnets in the big internal pieces and the bottom of the wings, right above the bottommost peg. For the outer layers I just magnetised it the normal way.
 
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