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Rod/Rope Strong N42 Neodymium Magnets 3mmx3mm 20 pack

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Other item info
Item number:200213983574
Item location:Corby, United Kingdom
Post to:Europe
History:10 sold
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Last updated on 23:27:37 BST, 08 Oct, 2009 View all revisions
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NEODYMIUM N42 ROD MAGNETS

 3mm dia x 3mm thick (Pack of 20)

 

Circular Magnets can be fixed in place using adhesive or can be pushed into circular drilled holes in wood or plastic, many new packaging designs use Neodymium magnets cleverly trapped behind laminations of cardboard to provide invisible closing mechanisms for folders, gift boxes, name badges and even greetings cards than stick to your refridgerator!
Neodymium magnets attract each other with almost twice the force that they use to attract steel objects.

They are also ideal for educational, research and experimental uses whilst magicians use these for cut and restored rope tricks. 


Neodymium magnets attract each other with almost twice the force that they use to attract steel objects. They also attract each other through very large distances, even small magnets will attract each other through the thickness of your finger!

 


 

3mm dia x 3mm thick N42 Neodymium Magnets (Pack 20)

Pack size

20 magnets

Geometry

3mm dia x 3mm thick neodymium magnet.
The NORTH pole is on one circular face and the SOUTH is on the opposite face.
The NORTH and SOUTH poles are 3mm apart.

Plating

These magnets are plated with 3 layers of protective coatings - Nickel + Copper + Nickel (Ni-Cu-Ni)

Performance

These magnets will have approximately 5900 Gauss on each face.
Each magnet can support a steel weight of approx. 0.4 kgs

Maximum Operating temperature

90 degrees C

Fixing

They can be bonded using 2 part adhesives such as 'Araldite'

By it Now Price £3.65

I also sell bulk packs at even greater value. 

 

Please see my other items for a whole range of high quality neodymium magnets for home, office and industrial use.

My policy is to have happy and repeat customers

 

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Important information regarding Neodymium Magnets

Liability

I do not accept responsibility for damage that has been caused by the improper handling of magnets.
With the purchase of these magnets, you confirm that you have read and understood the following warnings. If you are giving magnets as a gift, please be sure to include this information  in the package. Ensure that children under 10 are not allowed to play with magnets and children over 10 are told about the potential dangers of the magnets and supervised by an adult who has read and understood these warnings.

Danger of breaking or chipping

The most common cause of broken magnets is when two magnets are released and allowed to collide together. A combination of massive acceleration and high forces will cause one or both magnets to chip or shatter. Please do not allow this to happen and then try to return them to us as 'broken in the post'.
The chips are usually magnetically pulled back by the main magnets but it is conceivable that they may fly off at high speed into someone's eye. Eye protection is therefore advised. Chips and broken magnets are quite sharp, so cuts are possible as with broken glass. 

Danger for children

Do not let children under the age of 10 play with neodymium magnets and always supervise any child playing with these magnets.
If several small magnets are swallowed, they can get stuck in the intestines and cause major swelling,  life-threatening injuries and need surgery to remove them.
If they place them onto a television screen or computer monitor screen, permanent damage can occur as colours will become permanently distorted.

Keep larger magnets ( more than 1cm2) out of children's reach, as you would sharp knives or other dangerous materials, as fingers can be crushed between the powerful magnets.

Crushing, blood blisters and cuts

When larger magnets are brought close enough together they can have a surprising amount of power. Fingers are quickly caught between them which can cause blood blisters or cuts. Wear gloves when handling larger magnets and use caution. Practice handling smaller magnets first. Do not place these magnets up your nose or around the ears as they have soft tissue that will compress as the magnets attract through the thickness of the tissue and as the magnets get closer as a result, they exert yet more force which crushes still further etc. etc.

Magnetically sensitive items

Neodymium magnets are very much stronger than "ordinary" magnets. Keep a safe distance (200mm+) between the magnets and all objects that can be damaged by magnetism. These include mechanical watches, heart pacemakers, CRT monitors and televisions, credit cards, diskettes and other magnetically stored media such as video tapes.

Heart Pacemakers

It is widely thought that Heart Pacemakers can be stopped from functioning whilst in range of a magnetic field produced by a Neodymium magnet. It is thought that the Pacemaker will continue to work once the magnet is removed from the close proximity of the Heart Pacemaker.

Surface Plating - Wearing & chipping

Neodymium Magnets are usually plated with 3 layers of protective plating. First a layer of Nickel, then a layer of Copper and then a final layer of Nickel. This plating can wear away in the course of normal use if it is sliding or impacting onto a steel surface. If the plating layers are worn away, then the magnet will be exposed to corrosion and since the magnets contain a high percentage of iron, they will rust easily.   It is always better to use the magnet in a way that mechanically prevents it from ever touching the part that it is attracting. A mechanical stop which holds the magnet 0.2mm away from the attracted part will ensure a very long life of the magnet.

Cutting or drilling Neodymium Magnets

Neodymium magnets can be secured in place with adhesive or in some cases, with countersunk screws.
Magnets are sintered and extremely hard and brittle. You should never attempt to cut or drill into a magnet unless using diamond tooling and coolant (as the dust from cutting is very flammable).

Nickel allergies

Our Neodymium magnets are nickel-plated. Nickel is a metal which can cause an allergic reaction in some people. Nickel allergies can be acquired through long-term contact with objects that release nickel. In most cases, these allergic reactions are triggered by nickel-containing jewellery (e.g., earrings or piercings, clips, rings or necklaces). As a precaution, avoid long-term contact with nickel-plated magnets (e.g., jewellery) and totally abstain from contact with nickel-plated materials if you already have a nickel allergy. How much or little it takes to trigger a nickel allergy is debatable (note the discussions regarding the Euro coins which contain 25% nickel).

Effects on people

Millions of people worldwide wear Neodymium magnets to promote health and well being. We have found no evidence at all of detrimental effects of Neodymium magnets on people or animals - quite the reverse!

 




 


 


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£1.00 postage for each additional eligible item you buy from nelliescobie.
Item location: Corby, United Kingdom
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Estimated delivery*
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£0.75
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*The estimated delivery time is based on the seller's dispatch time, the postal service selected, and when the seller receives cleared payment. Sellers are not responsible for shipping service transit times. Transit times may vary, particularly during peak periods.
Domestic dispatch time
Will usually dispatch within 3 working days of receiving cleared payment.
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INTERNATIONAL BUYERS PLEASE CONTACT ME FOR POSTAGE COSTS BEFORE CHECKING OUT. IF YOU FAIL TO DO THIS, YOU WILL NOT HAVE THE CORRECT POSTAGE CHARGE AS A RESULT OF THIS, YOUR ITEM WILL NOT BE SHIPPED AND YOU WILL BE RESPONSIBLE FOR ANY FEES INCURRED
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