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Magnet Question

 
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starmanmm



Joined: 13 Jul 2002
Posts: 2281
Location: New Bedford, MA

PostPosted: Tue Mar 20, 2012 3:14 pm    Post subject: Magnet Question Reply with quote

Been checking on using magnets for a kit and notice references like "N34" or "N54"....

My question is... does the "N" stand for the strength of the magnet?

If so, then I would guess that the higher the number the stronger the magnet?
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Scott Hasty



Joined: 12 Jul 2002
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PostPosted: Tue Mar 20, 2012 3:26 pm    Post subject: Reply with quote

I would guess neodynium. Seems logical the number would indicate strength...
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Rogviler



Joined: 15 Jan 2009
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PostPosted: Tue Mar 20, 2012 3:40 pm    Post subject: Reply with quote

Scott Hasty wrote:
I would guess neodynium. Seems logical the number would indicate strength...


This is correct. The letter is the magnet type (Neodymium) and the number is the strength grade. I believe they go from 24 to 54. At least that seems to be the most common range.

-Rog
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starmanmm



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PostPosted: Tue Mar 20, 2012 4:33 pm    Post subject: Reply with quote

Ok... gives me an better idea of what I am looking at.

Thanks All!
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Chacal



Joined: 12 Jul 2002
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Location: Rio. Always unseasonably warm, even in the Winter, when we'll host the Summer Olympic Games of 2016

PostPosted: Fri Mar 30, 2012 6:56 pm    Post subject: Reply with quote

Neodymium magnet tips:

#1 - keep your fingers clear of big Nd magnets. They pinch and it hurts like a mother.

#2 - don't let them hit one another strongly because it can nick the chrome layer covering them and they may oxidize (turning into a crumbly, weak gray dust).

#3 - glue them with epoxy, and cover them well and thoroughly with it (to provide further protection against oxidation).

#4 - try not to swallow them.
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starmanmm



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PostPosted: Fri Mar 30, 2012 9:24 pm    Post subject: Reply with quote

Covering epoxie over the magnets won't interfer with their ability to work?
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Lt. Z0mBe



Joined: 29 May 2003
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PostPosted: Fri Mar 30, 2012 11:12 pm    Post subject: Reply with quote

starmanmm wrote:
Covering epoxie over the magnets won't interfer with their ability to work?


No. All you need is a thin skin a millimeter or two thick. Here's an illustration to give you an idea of how strong these things are: If you swallowed two of them a few minutes apart, thus allowing one to enter your duodenum and then small intestine a few minutes before the other, they would pull together and clamp so violently as to rupture the stomach and instestine.

Enjoy!

Kenny
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Chacal



Joined: 12 Jul 2002
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Location: Rio. Always unseasonably warm, even in the Winter, when we'll host the Summer Olympic Games of 2016

PostPosted: Sat Mar 31, 2012 1:01 pm    Post subject: Reply with quote

And if you are going to use them to hold two parts together, make sure their polarities align properly, or better, use one magnet in one part and a steel plate, rod, pin or whatever in the other part, this way you don't have to worry about polarity.
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starmanmm



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PostPosted: Sat Mar 31, 2012 2:41 pm    Post subject: Reply with quote

My plan was to use steel opposite the magnet.
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