Your Frequently asked questions answered

Our experts receive many questions regarding magnets, from how they work to how they are made – so with this in mind we have broken down the key information to answer the most common questions our experts receive to help you better understand the world of magnets! What is the difference between a permanent magnet and an electromagnet? A permanent magnet is a solid material that produces its own consistent magnetic field as the material is magnetised, however a magnetic field exerted by an electromagnet is produced by the flow... Read More


How are Alnico magnets important to electric guitars?

Our magnets are used in an array of applications including filtration and separation to everyday objects like smartphones, one use of alnico magnets which may not commonly be known is in electric guitars. So, if you’ve ever been guitar shopping or though about learning to play, you’ll have stumbled across the term alnico pickups. But what exactly are alnico pickups and why are alnico magnets used? What are Alnico magnets? Alnico is an acronym comprising of the first letter of the three metallic elements used to produce the magnets Aluminium,... Read More


Good Practices of Magnet Fishing

Magnet Fishing is extremely popular in the US and has seen the sport go viral on social media repeatedly. The overall concept is simple, throw a magnet tied to your rope into a body of water and see what you find.


What metals do magnets attract to?

Several customers will contact our team of experts to enquire about what materials will our magnets stick to, as magnets will not stick to all metals. Understanding what metals are magnetic and then learning which metals are best for use in your applications is important. So, here at FIRST4MAGNETS we have decided to show you what magnets will and won’s tick to and explain the reasoning behind these answers. Metals that attract to magnets Metals that naturally attract to magnets are known as ferromagnetic metals; these magnets will firmly stick... Read More

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Cell phones & Magnets: All you need to know

Anyone working with or near magnets will have been made aware of the many health and safety warnings regarding magnets. One warning has always been that you must keep magnets away from computers, credit cards, and even your phone. So, do magnets pose a threat to phones and other modern technology? If so, what threats do they pose and how strong must a magnet be to damage a cell, and what parts of the device would be susceptible to damage? The whole idea can be traced back to older pieces... Read More


What reduces a magnets performance?

All magnets have a ‘pull’ rating measured in kilograms which relates to how much force acting perpendicular to the magnet to pull the magnet from a steel plate, when in direct contact. The ‘pull’ rating is obtained and calculated under ideal conditions such as a thick enough steel plate which is perfectly flat and clean. As the pull force is slowly steadily increased and is absolutely perpendicular to the magnet face. However, in real world applications, perfect conditions are unlikely and there are six main factors which could affect and... Read More

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Handling Magnets Safely

Magnets can be extremely useful and have many benefits for a wide range of applications, but they do come with some hazards. If you place two magnets close to each other you will see them attract, in which they leap towards each other with great acceleration and then slam together. All our magnets are tested, and each magnet is clearly labelled with its pull-strength and our stronger magnets are packaged alongside a warning brochure. Neodymium magnets are amongst the strongest magnets in the world, and the force at which they... Read More


What is a reed switch, and how are they utilised?

What is a reed switch? A reed switch is an electromagnetic switch that is used to control the flow of electrical currents in a circuit. Reed switches are made from two or sometimes more ferrous reeds that are encased within small glass tube-like envelopes. These envelopes then become magnetized when moved together or separate when a magnetic field is moved towards the switch. Effectively, when the two reeds are in contact, electricity can flow around the circuit operating a device. Types of reed switch There are two fundamental types, ‘normally... Read More

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What Is A Homopolar Motor And How Does One Work?

First created in 1821, the homopolar motor was the first electrical motor to be built. A homopolar motor is a direct current (DC) electric motor which produces constant circular motion. The great thing is that the homopolar motor is the simplest example of a motor possible. Plus it is really easy ti experiment with. What is a homopolar motor? We’ve already established a homopolar motor is a type of electrical motor. The homopolar motor causes a continuous circular motion that was engineered by the circular magnetic force around a wire... Read More

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All you need to understand about eddy currents!

Magnets! Aren’t they just amazing – there are many exciting things about magnets that seem to wow people, and sometimes the only explanation you can think of is that it seems to be magic! The best place you can find out more about magnet-related phenomena is of course through our blog and YouTube. What is an eddy current? Despite what some may think, it isn’t named after an individual called Eddie – an eddy current is a spiralling electrical current that is formed in conducting metals like copper and steel.... Read More