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Anonymous
Posted on Saturday, January 18, 2003 - 4:04 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

How do you get supermagnets apart?
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Simon Quellen Field (Sfield)
Posted on Saturday, January 18, 2003 - 4:18 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

You slide them apart, instead of pulling them apart.
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Ryan Somebody
Posted on Sunday, January 19, 2003 - 6:06 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

If your like me, and sometimes you still can't seperate them, try this:

Take a pair of vice grips and some electrical tape. Wrap the electrical tape around the end of the vice grips so they won't damage the magnet when you clamp them down. Voila!

This works particularly well when you use steel vice grips, and it makes it a LOT easier to slide the magnets apart.
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Ryan Somebody
Posted on Sunday, January 19, 2003 - 6:13 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Almost forgot, if you don't have access to vice grips you can use a piece of sheet aluminum or copper to wedge them apart.

I'm very pleased with the high quality of the magnets, but is their anyway I could get an order to be shipped in heat shrink rubber (for demonstrations)?
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Simon Quellen Field (Sfield)
Posted on Sunday, January 19, 2003 - 7:14 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

The magnets have a very low Curie point.
The neat needed for the heat-shrink may cause
the magnets to become de-magnetized.
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Zoch
Posted on Wednesday, May 21, 2003 - 8:53 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

So you can put a flame near it and they will come apart? Mine already cracked while I was trying to pull them apart
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Simon Quellen Field (Sfield)
Posted on Wednesday, May 21, 2003 - 10:24 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Yes, heating them will cause them to become useless lumps of
expensive gold-plated junk. The effect is permanent, or until
you re-magnetize them.
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Jason
Posted on Friday, May 30, 2003 - 4:28 am:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

If the effects are permanent, how can the magnets be used in the curie heat engine?
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Simon Quellen Field (Sfield)
Posted on Friday, May 30, 2003 - 1:06 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

A regular steel nail is attracted to magnets.
It is not a magnet by itself.

You can magnetize the nail by stroking it on a
strong magnet. Now it is a magnet itself.

If you heat the nail to a temperature above its
Curie point, it will no longer be a magnet, and it
will no longer be attracted to magnets.

But, once the nail cools below its Curie point,
it will again be attracted to magnets. However,
it is back to its original state, and to make it
a magnet again, you will have to re-magnetize it.

The same thing happens with the NdFeB magnets.
The problem with re-magnetizing them is that they
require an extremely strong magnetic field in order
to make them as strong as they were when you purchased
them. Normally this is done at the factory with
expensive equipment.
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William Beaty
Posted on Saturday, August 28, 2004 - 9:21 am:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

If magnets are so strong that you can't slide them apart, sometimes you can put them on the edge of a formica counter top, then push one magnet downwards while the other stays on the counter. That way you're using your weight instead of just finger-strength. This even works with absolutely humongous supermagnets.
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Paul Carlisle
Unregistered guest
Posted on Wednesday, January 26, 2005 - 6:11 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

I use a couple pieces of 1x2 pine, joined at one end so they can pivot, as a pair of "scissors" to separate strong magnets that are smaller than the width of the boards. They won't mar the finish of the magnets, and aren't hard enough to do them any other sort of damage.
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sumit
Unregistered guest
Posted on Sunday, July 3, 2005 - 3:27 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

can you tell..........
how lines of forces behaves while passing through diamagnetic material and paramagnetic material.
thanks
sumit
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Simon Quellen Field (Sfield)
Senior Member
Username: Sfield

Post Number: 540
Registered: 12-2004
Posted on Sunday, July 3, 2005 - 4:41 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

See "http://scitoys.com/board/messages/1/535.html?1120423189".
You asked the same question in two different threads.
That doesn't help.
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James Lee (Necrofear)
Member
Username: Necrofear

Post Number: 15
Registered: 8-2006
Posted on Monday, August 28, 2006 - 6:32 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

I am writing this on behalf of anyone who needs to take the magnets apart.
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James Lee (Necrofear)
Member
Username: Necrofear

Post Number: 16
Registered: 8-2006
Posted on Monday, August 28, 2006 - 6:33 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Get the magnets and put them on an edge of a counter and slide one off.
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James Lee (Necrofear)
Member
Username: Necrofear

Post Number: 17
Registered: 8-2006
Posted on Monday, August 28, 2006 - 6:35 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

If u want it an easier way get a pair of pliers or a pair of vice grips and put tape around the "mouth" so it wont make dents or mess up your very expensive magnets. The first day i bought mines the gold "wrap" is going off because i am not being careful and aloowing the magnets to come together when i dont want them too.
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James Lee (Necrofear)
Member
Username: Necrofear

Post Number: 18
Registered: 8-2006
Posted on Monday, August 28, 2006 - 6:36 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Take good care of your magnets. Treat them with your love and kindness. (LOL) What i am trying to say is dont misuse them and use them properly!
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John Kondo (Smartypants)
New member
Username: Smartypants

Post Number: 2
Registered: 4-2008
Posted on Thursday, April 24, 2008 - 4:24 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

how close do they( the magnets) have to be in order to get attracted to each other?
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Simon Quellen Field (Sfield)
Senior Member
Username: Sfield

Post Number: 1886
Registered: 12-2004
Posted on Thursday, April 24, 2008 - 5:22 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Work with the magnets on a steel surface, so they don't jump together.
They might seem to be safely kept apart while sitting on the table a few
inches from one another, but giving the table a small bump can reduce the
friction and you quickly have magnets hitting one another with 20 Gs of force.
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margaret (Maggiec)
New member
Username: Maggiec

Post Number: 1
Registered: 6-2008
Posted on Monday, June 2, 2008 - 1:24 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

strange question, something I have neither the resources or expertise to answer for my 9 year old son.

THEORETICALLY: If you were to write a message in gold, sandwich it in-between 2 pieces of paper, sprinkle metal filings over the top and run a magnet underneath. Would the gold block the magnetic field in those areas, allowing the filings to be pulled to the blank areas thereby exposing the secret message?

appreciate your assistance.
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Simon Quellen Field (Sfield)
Senior Member
Username: Sfield

Post Number: 1903
Registered: 12-2004
Posted on Monday, June 2, 2008 - 3:33 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Iron would work better.
It would also be cheaper.

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