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Magnets

£0.25

Magnets

At Geocache Land we understand that finding good quality magnets is hard. Most people buy cheaply imported magnets from auction sites with no knowledge of the quality or if the magnet is even the type stated. When you do find the magnet you need, in the correct size, you then find that they are only available in multiples of 10 or even 25, no use when you just need 1 or 2 to make a cache stick to the top of a radio mast or under the middle of a suspension bridge (less extreme places can also be used).

Neodymium magnets are graded by strength, from N28 (lowest) to N52 (highest). Most Neodymium magnets sold on auction sites are N28 to N30.  Please see the graph below

Geocache Land have fixed these problems for you!

Our magnets are top quality Neodymium magnets (Ni-Cu-Ni, NdFeB) and are N35, N42 or N52 strength. This does make them slightly more expensive, but they are much stronger. (Please only order N52 for places you need an extremely strong magnet!)

We also sell the number you require, from 1 to 100 (depending on stock levels.)

When buying magnets from Geocache Land you must read the Health and Safety information at the bottom of this listing. Buy buying magnets from Geocache Land you agree that you have fully read and understood the H&S information. Geocache Land cannot accept any responsibility for the improper use and handling of magnets.

Magnets are a UK only product. We will not send overseas due to the delays they cause in customs clearance.


Sizes Available:

Ø10mm x 1.5mm N52 disk - 25p each (WARNING - Extra Strong)

Ø11mm x 0.5mm N35 disk - 35p each

Ø15mm x 1.0mm N35 self adhesive disks - £1 for 2*

Ø15mm x 1.0mm N52 disc (non adhesive) - 50p each (WARNING - Extra Strong)

Ø12mm x 3.0mm N52 disk - 40p each (WARNING - Extra Strong)

Ø12mm x 4.0mm N52 disk - 60p each (WARNING - Extra Strong)

13mm x 7mm x 2.5mm block - N35H - 40p each (Very Strong and will work upto 120ºC)

Ø18mm magnetic bag button (silver coloured)** - 30p/pair*

40mm x 10mm x 5mm - N42 - £3 each (WARNING - Extra Strong)

10mm x 10mm x 1mm - N42 - 25p each (WARNING - Extra Strong)


*Sold in matching pairs only.

** Ideal for making magnetic clasps on camo bags or replacements on your caching bag.




Why Neodymium?

Neodymium magnets contain Neodymium which is one of the Lanthanide series of rare earth metals and appears as element number 60 on the Periodic Table. Neodymium magnets themselves are actually made of a combination of Neodymium, Iron and Boron and hence they are sometimes referred to as Neodym, Neod, Neo, NIB or NdFeB.

Magnets made from Neodymium are very strong and versatile and are supplied to work at normal room temperatures.

Neodymium magnets are usually coated in nickel, tin, zinc, phosphate, gold, silver, PTFE (known under the trade name Teflon) or epoxy resin to prevent the iron core of the magnet rusting.

Neodymium magnets are often used for special effects in films such as Harry Potter, Tomb Raider and Thunderbirds. In Harry Potter and Thunderbirds they were used to make things appear to levitate, while in Tomb Raider they were used to hold ‘bombs’ underneath a table! They are also used to levitate Maglev trains, which are both faster and quieter than wheeled carriages, and are capable of reaching speeds of 581 km/h (361 mph).

Neodymium magnets are also used in magnetic water conditioners, fuel efficiency devices, magical tricks, sensors, speakers, separators, holding devices, actuators, magnetic bearings and motors. They are also found in slot car games like Scalextric.



Health and Safety Information


You MUST read the following before using your magnets. It contains important health and safety information that everyone using magnets needs to know. All persons placing an order for magnets from Geocache Land agrees that they have read and understood the below health and safety information and that they fully accept sole responsibility for ensuring the correct use of these items.


As magnets are brittle, care should be taken to avoid breakage or chipping as this is the most common reason for damage. We cannot accept returns of magnets that have been allowed to collide together due to improper handling. Please be aware that allowing magnets to collide together can cause them to shatter. The resulting fragments can be sharp, causing cuts and are a risk to eyes. We, therefore, recommend the use of protective eye wear and gloves when handling magnets. Allowing magnets to crash together can cause blood blisters, crushing and cuts. Special care should be taken particularly with larger magnets which can have incredible power when brought together. It is surprisingly easy to crush fingers or cause pinching, blood blisters and cuts if large magnets are not used safely. It is advisable to practice handling smaller magnets before using larger, more powerful magnets.

 

Children using magnets will need proper supervision. We recommend not allowing children under 10 to play with magnets and advise that children over this age only use magnets when they fully understand the information given here, or are supervised by a responsible adult who has read it fully.

 

As a general rule, keep large magnets (more than 10mm2 or 3/8”2) out of reach of children.

 

Magnets are very dangerous if ingested. If swallowed seek immediate emergency medical advice. Magnets will cause major swelling in the intestine resulting in life threatening injuries that will require emergency surgery to rectify. Similarly, magnets placed near areas of soft tissue (e.g. up the nose, or in the ear) can cause compression of these delicate areas. Other magnetically sensitive items include: mechanical watches, heart pacemakers, CRT monitors, credit cards, diskettes and other magnetically stored media such as i-pods, hard drives and video tapes. Neodymium magnets are especially strong and we recommend maintaining a distance of at least 200mm between magnets or magnetically sensitive objects that could be damaged by them.

 

Heart Pacemakers. Professional opinion is that heart pacemakers can stop functioning in a magnetic field produced by a neodymium magnet. Once the magnet is removed it is thought that a pacemaker will continue to function again.

Magnets will cause permanent distortion of the colour in TVs and computers so always keep them well away from these items.

 

We advise that you do not cut or drill your magnets. Professional advice on cutting and drilling is that diamond tooling and coolant should always be used. The dust from cutting is extremely flammable and as magnets are sintered, they are extremely hard and brittle. Consider holding neodymium magnets in place with adhesive. In some cases you can also use countersunk screws.

 

Prevent wear and chipping of your magnets protective plating. Although our neodymium magnets are usually plated with 3 protective layers, the plating can wear away leaving the magnet core exposed to corrosion. For longevity it is best to avoid using magnets in any way that produces wear of the protective plating. If at risk, consider using a mechanical stop to maintain a minute gap and prevent harm to the plating.

Nickel plating can cause an allergic reaction in some people particularly after long-term contact. As some neodymium magnets are nickel plated; as a precaution, long-term contact with nickel plated magnets (e.g. jewellery) should be avoided and those with a nickel allergy should avoid altogether. However it should be noted that millions of people successfully wear neodymium magnets to promote health and wellbeing all over the world and there is no evidence of any detrimental effects.

 

Handy Hints for Handling Magnets

 

Neodymium

· Neodymium magnets can hurtle towards each other - even from long distances.

· The acceleration and magnetic force will cause them to chip and crack.

· Injury can be caused by collisions including cuts, crushing and blisters.

· The larger the magnet – the greater the risk!

· Magnets less than 1.5mm thick and greater than 5mm diameter or width can be broken by trying to flex them.

 

Ceramic Magnets and Ceramic Craft Magnets

· Dropping ceramic magnets onto a hard surface will cause them to start to demagnetise or to chip/break.

 

Alnico

· Alnico magnets must never be placed near Samarium Cobalt or Neodymium magnets because they could be demagnetised by them.

· Like poles (south-south or north-north) must NOT be brought together because it will cause demagnetisation.

· Dropping them can also cause demagnetisation.

 

Samarium Cobalt

· Samarium Cobalt magnets are extremely brittle and can easily shatter. Extra care must be taken when handling them because of this.

 

How to Store

· Store your magnets in their original packaging.

· Using non compressible spacers made from plastic or wood will make it easier to separate your magnets when needed.

· Neodymium magnets do not need keepers.

· Do not mix or loosely store magnets.

· Keep magnets away from magnetic storage materials.

 

How to Separate

· Remember it is easier to slide magnets apart than to pull them apart.

· Do not slide magnets across poles and avoid attraction by opposite poles.

· Try separating magnets by overhanging a single magnet from a raised flat surface (e.g. table or desk) and then holding the rest on the flat surface, push down on the single magnet to slide it apart. To stop separated magnets jumping back, keep the magnet moving away from its neighbours to a safe distance of at least 50cm.

 

How to Ship

· Magnets can be transported by air, land or water

· When shipping magnets by air you will need to meet IATA and DOT regulations

 

Don't forget: all orders qualify for a free gift. Remember to add yours to your order!

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