Home | Community | Message Board

NorthSpore.com BOOMR Bag!
This site includes paid links. Please support our sponsors.


Welcome to the Shroomery Message Board! You are experiencing a small sample of what the site has to offer. Please login or register to post messages and view our exclusive members-only content. You'll gain access to additional forums, file attachments, board customizations, encrypted private messages, and much more!

Shop: Unfolding Nature Unfolding Nature: Being in the Implicate Order   Myyco.com Golden Teacher Liquid Culture For Sale   PhytoExtractum Buy Bali Kratom Powder

Jump to first unread post Pages: 1
OfflineRoughNex
Unrated 4 LIFE!
Male


Folding@home Statistics
Registered: 03/30/10
Posts: 125
Last seen: 8 years, 3 months
Re-magnetizing Neodymium magnet: How to?
    #13338382 - 10/15/10 12:17 AM (13 years, 7 months ago)

On accident, I heated a small Neodymium magnet above the Curie Point. Rendering it useless... Any ideas on how to re-magnetize it back fully?? Or is it now S.O.L.


--------------------
Everything You'll Ever Need To Know

"Do not go where the path may lead, go instead where there is no path and leave a trail."

-Ralph Emerson

Edited by RoughNex (10/15/10 12:18 AM)

Extras: Filter Print Post Top
Invisiblewildernessjunkie
Reshitivest
I'm a teapot


Registered: 06/13/10
Posts: 8,118
Loc: HTTP 404 Not Found
Re: Re-magnetizing Neodymium magnet: How to? [Re: RoughNex]
    #13338490 - 10/15/10 12:58 AM (13 years, 7 months ago)

Just wanted this thread. No input. Sorry.

Extras: Filter Print Post Top
InvisibleDieCommie

Registered: 12/11/03
Posts: 29,258
Re: Re-magnetizing Neodymium magnet: How to? [Re: RoughNex]
    #13339208 - 10/15/10 08:37 AM (13 years, 7 months ago)

Try reheating it up in an super strong magnetic field.  Getting a strong enough magnetic field may be hard.

Extras: Filter Print Post Top
OfflineChuangTzu
starvingphysicist
Male User Gallery


Folding@home Statistics
Registered: 09/04/02
Posts: 3,060
Last seen: 10 years, 7 months
Re: Re-magnetizing Neodymium magnet: How to? [Re: DieCommie]
    #13339232 - 10/15/10 08:51 AM (13 years, 7 months ago)

Quote:

DieCommie said:
Getting a strong enough magnetic field may be hard.




Very hard depending on the size of the magnet.

Quote:

32. How strong of a magnetic field is necessary to magnetize a neodymium magnet?
As a general rule of thumb, a peak field of between 2 and 2.5 times the intrinsic coercivity is required to fully saturate a magnet. For standard neodymium magnets, the field required is minimum of 24 KOe, but 30 KOe is usually the minimum used.



http://www.kjmagnetics.com/FAQ.asp#magnetize

For that, you'd probably need something like this:

http://www.allmagnetics.com/device/magnetizer.htm

You might be able to send it to K&J or some other magnet company to get re-magnetized.

Extras: Filter Print Post Top
OfflineRoughNex
Unrated 4 LIFE!
Male


Folding@home Statistics
Registered: 03/30/10
Posts: 125
Last seen: 8 years, 3 months
Re: Re-magnetizing Neodymium magnet: How to? [Re: ChuangTzu]
    #13340231 - 10/15/10 12:58 PM (13 years, 7 months ago)

Thanks for the advice!

I was really hoping for a DIY method
to re-magnetize it if at all possible.




Quote:

ChuangTzu said:

32. How strong of a magnetic field is necessary to magnetize a neodymium magnet?
As a general rule of thumb, a peak field of between 2 and 2.5 times the intrinsic coercivity is required to fully saturate a magnet. For standard neodymium magnets, the field required is minimum of 24 KOe, but 30 KOe is usually the minimum used.





Let see if I'm reading this right.. I would need another neodymium magnet w/ even more force to fully re-magnetize it?

Edited by RoughNex (10/15/10 01:01 PM)

Extras: Filter Print Post Top
OfflineSeussA
Error: divide byzero


Folding@home Statistics
Registered: 04/27/01
Posts: 23,480
Loc: Caribbean
Last seen: 3 months, 8 days
Re: Re-magnetizing Neodymium magnet: How to? [Re: RoughNex]
    #13340633 - 10/15/10 02:57 PM (13 years, 7 months ago)

> I would need another neodymium magnet w/ even more force to fully re-magnetize it?

Almost...  Try, "I would need a magnetic field w/ almost double the force to fully re-magnetize it."

Extras: Filter Print Post Top
InvisibleStonehenge
Alt Center
Male User Gallery
Registered: 06/20/04
Posts: 14,850
Loc: S.E.
Re: Re-magnetizing Neodymium magnet: How to? [Re: Seuss]
    #13341170 - 10/15/10 05:40 PM (13 years, 7 months ago)

Toss it. They are cheaper to buy than to make. I've got some, want to trade?


--------------------
“A democracy cannot exist as a permanent form of government. It can only exist until the voters discover that they can vote themselves largesse from the public treasury. From that moment on, the majority always votes for the candidates promising the most benefits from the public treasury with the result that a democracy always collapses over loose fiscal policy, always followed by a dictatorship.” (attributed to Alexis de Tocqueville political philosopher Circa 1835)

Trade list http://www.shroomery.org/forums/showflat.php/Number/18047755

Extras: Filter Print Post Top
OfflineAnnom
※※※※※※
 User Gallery


Folding@home Statistics
Registered: 12/22/02
Posts: 6,367
Loc: Europe
Last seen: 1 year, 3 days
Re: Re-magnetizing Neodymium magnet: How to? [Re: RoughNex]
    #13343690 - 10/16/10 12:00 PM (13 years, 7 months ago)

The Curie temperature of Neodymium magnets is about 300 C. What did you do with the magnet to make it that hot?

Extras: Filter Print Post Top
OfflineToTheSummit
peregrinus
 User Gallery

Folding@home Statistics
Registered: 08/22/99
Posts: 9,127
Loc: Las Vegas
Last seen: 2 days, 15 hours
Re: Re-magnetizing Neodymium magnet: How to? [Re: Stonehenge]
    #13343870 - 10/16/10 12:41 PM (13 years, 7 months ago)

Quote:

Stonehenge said:
Toss it. They are cheaper to buy than to make. I've got some, want to trade?



That was my first thought.  I got on a kick playing with magnets a few years back and still have a bunch hanging around here.  KJMagnetics was a great site to order from.  I still show my magnetic levitator to people all the time.


--------------------
You invented the wheel....You push the motherfucker!!

Extras: Filter Print Post Top
OfflineRoughNex
Unrated 4 LIFE!
Male


Folding@home Statistics
Registered: 03/30/10
Posts: 125
Last seen: 8 years, 3 months
Re: Re-magnetizing Neodymium magnet: How to? [Re: Annom]
    #13350300 - 10/17/10 10:09 PM (13 years, 7 months ago)

Thanks for all your advice!
I Think y'all are right to toss it.
It was relatively small anyways and it
was really just curiosity as to if it could be done
with some easy to get supplies from around the house.

Quote:

Annom said:
The Curie temperature of Neodymium magnets is about 300 C. What did you do with the magnet to make it that hot?





Let's just say I also have a thing for propane torches :grin: Long story short..


--------------------
Everything You'll Ever Need To Know

"Do not go where the path may lead, go instead where there is no path and leave a trail."

-Ralph Emerson

Extras: Filter Print Post Top
OfflineAaron Becker
Stranger
Registered: 08/02/14
Posts: 1
Last seen: 9 years, 9 months
Re: Re-magnetizing Neodymium magnet: How to? [Re: RoughNex]
    #20363651 - 08/02/14 06:13 AM (9 years, 9 months ago)

Another option is to bring the magnet with you to an MRI.  MRI strengths are measured in Tesla and most scanners are 1.5 or 3T.  3T = 30,000 gauss, so this should be enough to remagnetize your magnet.  Only a cheap option for a select few.

Extras: Filter Print Post Top
Jump to top Pages: 1

Shop: Unfolding Nature Unfolding Nature: Being in the Implicate Order   Myyco.com Golden Teacher Liquid Culture For Sale   PhytoExtractum Buy Bali Kratom Powder


Similar ThreadsPosterViewsRepliesLast post
* (More) Magnets... Gomp 1,098 12 10/21/06 12:33 PM
by Gomp
* Neodymium Magnets..... PhanTomCat 1,218 16 05/23/07 03:11 PM
by Pinhead
* neodymium magnet... Annapurna1 1,323 9 03/02/06 03:37 AM
by outerwave
* George Green's Magnetic Motor - Free Energy?
( 1 2 all )
Ginseng1 12,293 39 05/09/08 03:26 PM
by johnnyone
* Mushroom growth and magnets PitcherCrab 1,339 8 03/13/07 10:45 PM
by Chrisped
* So I've been playing with this N50 magnet...
( 1 2 all )
ChuangTzu 3,798 23 11/27/08 04:39 AM
by Seuss
* Seagate Releases First Hard Drive With Native Strong Encryption (AES) DiploidM 1,766 14 02/14/08 02:43 AM
by Seuss
* NSF Builds 21 Tesla Superconducting Magnet automanM 1,315 5 08/09/04 07:38 AM
by Seuss

Extra information
You cannot start new topics / You cannot reply to topics
HTML is disabled / BBCode is enabled
Moderator: trendal, automan, Northerner
10,464 topic views. 0 members, 0 guests and 1 web crawlers are browsing this forum.
[ Show Images Only | Sort by Score | Print Topic ]
Search this thread:

Copyright 1997-2024 Mind Media. Some rights reserved.

Generated in 0.021 seconds spending 0.005 seconds on 12 queries.