Posted: 1/18/2012 12:38:05 PM EDT
This is an aluminum plate with 4 - 8lb pull neodymium magnets pressed into it. What should be the polarity of the magnets be for maximum pull? I have them arranged N/S/N/S. This is for holding up a digital read out box for measuring tools I invented many years ago. The boxes are expensive so I want plenty of holding force, although 2 of these is overkill. |
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Interesting question and something I'd like to learn more about also. Anyone know any decent sites that explain the magic? There's a really good song that teaches you all about the properties of magnets. I would think this is a more advanced question..... |
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Quoted: Quoted: Quoted: Interesting question and something I'd like to learn more about also. Anyone know any decent sites that explain the magic? There's a really good song that teaches you all about the properties of magnets. I would think this is a more advanced question..... Never stop exploring the miracle of magnetism  Speed |
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Quoted: Quoted: Quoted: Interesting question and something I'd like to learn more about also. Anyone know any decent sites that explain the magic? There's a really good song that teaches you all about the properties of magnets. I would think this is a more advanced question..... I concur, both of our applications exceed the capability of miracles. |
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Quoted: Quoted: One 3" diameter x 1" thick in the 6T order of magnitude. Accurate and succinct on the first page? Unpossible! I worked with magnets a lot at an R&D shop. Nothing like having a 6"x3" Neo magnet chase you around the shop because some one put in on the rolling shop chair, and you walked by with a 1911 IWB. |
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http://i75.photobucket.com/albums/i307/batmanacw/gear/IMAG0119.jpg This is an aluminum plate with 4 - 8lb pull neodymium magnets pressed into it. What should be the polarity of the magnets be for maximum pull? I have them arranged N/S/N/S. This is for holding up a digital read out box for measuring tools I invented many years ago. The boxes are expensive so I want plenty of holding force, although 2 of these is overkill. I hope the magnets don't fuck-up the electronics in your invention. 
(THIS IS THE POST OF THREAD SO FAR) |
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http://i75.photobucket.com/albums/i307/batmanacw/gear/IMAG0119.jpg This is an aluminum plate with 4 - 8lb pull neodymium magnets pressed into it. What should be the polarity of the magnets be for maximum pull? I have them arranged N/S/N/S. This is for holding up a digital read out box for measuring tools I invented many years ago. The boxes are expensive so I want plenty of holding force, although 2 of these is overkill. I hope the magnets don't fuck-up the electronics in your invention.
(THIS IS THE POST OF THREAD SO FAR) I used this basic setup for 4 years and that set is still working today. I used much stronger magnets that time. |
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Would magnet use not indicate a need to be able to move them? |
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I don't believe it will matter, as there is no soft iron path to conduct the field between the magnets.
Put each one in an iron cup and it should double the holding force. Or put an iron plate on top. ETA: semi off topic, but it's good to know. Hard disk drives contain a pair of very strong, if odd shaped, rare earth magnets in the head positioner. They are great for sticking papers to the backs of kennedy roll-around tool chests. |
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I don't believe it will matter, as there is no soft iron path to conduct the field between the magnets. Put each one in an iron cup and it should double the holding force. Or put an iron plate on top. ETA: semi off topic, but it's good to know. Hard disk drives contain a pair of very strong, if odd shaped, rare earth magnets in the head positioner. They are great for sticking papers to the backs of kennedy roll-around tool chests. I've got a couple of those. Very powerful. |