Dom
Member
I've only ever magnetized one Wushuang. If I said that I used one type of magnets and later said I used a different type, I'm sorry, I was almost certainly mistaken in the later post. Whatever I said first was probably written just after I did it, and was almost certainly correct.
I think you're probably about right that the outer layers should be 75% the strength of the inner layers (I shoot for 80%, but that's pretty close). I don't have a Wushuang handy, but I think I recall measuring and finding out that the thickness of plastic was greater in the outer layers. That may explain the disparity. If you try plugging in some different numbers for distance between magnets it's surprising the difference it makes.
Cool. That helps tremendously.
Ok, so my calculations put me at a choice between either a 77% or 87%. If you're saying the distance is slightly greater in the outer layers, then I'll probably go with 87%, which would match up with your 92% from your earlier post (vice 75% from your recent post).
I'm Splitting hairs here, but I'm glad you already went through this with the WuShuang.
Here's my plan for my WuShuang, since I prefer extremely strong magnets:
(Pull force in parentheses)
Inner - 4x2 N42 (0.76 lb)
Outer - 4x2 N50 (0.91 lb) paired up with 4x1 N48 (0.42 lb), (which averages out to 0.665 lb)
That puts the outer layers at 87% of the force of the inner layers. Adding the factor of slightly increased distance in the outer layers, I think it'll drop the force enough to bring that percentage down a little.