How to make a strong magnet with your own hands at home? How to strengthen magnet at home neodymium magnets do it yourself

Radiomir 2006 No. 9.

It is known that the noticeable effect of the magnetic field is noted only in iron-containing materials. But these materials differ and divided into magnetic and tape recorders. Their main difference is the ability to maintain magnetization after the end of the magnetic field. In addition to iron and its alloys, ferrites made from iron dioxide powder with various additives (barium, cobalt, strontium, etc.) by hot pressing by high pressures are equipped with magnetic properties.

From magnetic ferrites, cores of transformers and chokes are manufactured, tape recorder ferrites go to the manufacture of permanent anisotropic magnets.

In domestic conditions, it is possible to make good permanent magnets from alloyed steels. Without going into the subtleties of the grades of stories, it can be said that ironing steel is suitable for manufacture. At hand, there will always be old noodles, files, hacksaw blades, etc. The selected material first need to "release", heating to red cation, and then cool slowly. After the manufacture of the billet of the magnet, it is hardened - heated to light red cation and are sharply cooled in cold water. The stronger the hardening, the better the magnet will be.

The process of magnetization can be carried out on a simple installation consisting of inductor inductance and fuse. The coil is wound on the frame of this diameter so that the magnet blank was placed inside. For example, for the manufacture of the coil, I used the frame from imported solder (H \u003d 40 mm, d \u003d 50 mm, d \u003d 22 mm).

The coil is wrapped with a wire PEV-2 with a diameter of 2 mm and contains about 500 turns. It is reinforced on the basis and connected to the network through the fuse and switch. The workpiece is placed inside the coil, the fuse is installed and the switch is closed. The fuse immediately burns, but during this time the workpiece has time to magnetize.

For a fuse, you can use a thin copper wire. To safety, it must be placed in a glass tube from the burnt fuse and fall asleep with pure quartz sand (for reliable discharge damage).

The current of the fuse of the fuse from the wire I PP can be approximately calculated according to the empirical formula:

I PP \u003d (D-0.005) / K where D is the wire diameter, mm (up to 0.2 mm);

K is a constant coefficient (for copper k \u003d 0.034). From this formula it follows that the diameter of the wire for fuse

d \u003d K * I PP +0.005.

The installation in the proposed version allows you to obtain permanent magnets by force of up to 200 mT, which is quite enough for use in structures containing the chips of the magnetic field converters (PMP).

The same installation can be used to demagnetize the radio roundage tool, turning on the coil through a lowering transformer with output voltage not more than 6 V. Power is supplied to the coil at its location at a distance of at least 1 m from the demagnetized tool, it takes it in the hand, bring to the tool and slowly Remove, describing expanding circles.

When working with an induction coil when inclusion in the network (220 V), follow the safety regulations.

I.Semenov, Dubna Moscow region

Surely every person is familiar with the magnet and its properties. The use of magnets is now wide enough in different industries. Most of us have heard about neodymium magnets and their growing popularity. These are quite powerful magnets, including boron, iron, and the rare-earth element are neodymium. Also, magnets are quite powerful with their small sizes, and their service life is much longer than usual. The price is high enough. In this article we will tell where to get small instances of this magnet.

From the speakers of a broken mobile phone

Neodymium magnets can be obtained from the speakers of an unnecessary phone, two such speakers are two: one hearing is small and large, which plays a ringtone.

Magnet is more easy to get from the dynamics, for this we will need passatas. Gently break the case of the dynamics so as not to damage the magnet. Inside we see a small magnet with a diaphragm and a coil.

The magnet of the speaker is almost 2 times less than from the main dynamics. Although he is small, but with ease holds the Passatia. Such a magnet can, for example, be mixed up to a screwdriver so that cogs are not filled with it.

From Cell Camera

Tiny neodymium magnets can be reached from a mobile phone camera, but only when the camera has an optical focus or stabilization in the chamber. Triangular magnets can be obtained from the corners of the chamber body.

Also neodymium magnets can be found in vibromotors. For example, in the iPhone 4S, the vibro engine resembles a washer, in the center of which is a small strong neodymium. In micromotors, the most often simple magnets are most often.

From headphones

Almost every person somewhere there are old, torn headphones. Do not hurry to throw them out, in each headphone there is a small neodymium magnet. They are easy to disassemble and get it.

From latch

Very often neodymium magnets are used in all sorts of magnetic latches on covers from mobile phones, handbags, on latches from curtains, boxes from accessories.

Magnets in latches are hidden into iron protection, this is done so that the magnet does not reveal when attracting the latch.

Conclusion

Neodymium magnets were very strongly introduced into our lives. If you look closely, they surround us everywhere: in mobile phones, computers, engines, different accessories. We tried to show several places where they can be reached. You can use magnets everywhere where the fantasy is enough. We used neodymium magnets in an eternal flashlight generator for a dog, as well as as latches on VR-glasses, like fasteners for the refrigerator notes, plipped a magnet on a screwdriver and a screwdriver to conveniently unscrew and twist the screws.

Maybe you, just like me it took a neodymium magnet. Do not hurry to buy it. There are several places where you can take them for free. In addition to different homemakes, neodymium magnets are used to stop different counters, but now the manufacturers have already learned how to protect the accounting devices and such practices can cost you big trouble. Possible "savings" will definitely be less than a fine size.

If your desires to acquire neodymium magnets are environmentally friendly and do not affect the interests of third parties and organizations, it makes no sense to buy them. There are several places where you are guaranteed to find a neodymium magnet cheap or free.

Old headphones from the phone or player.
Old hard drives from the computer.
Old CD and DVD drives for a computer.
Stepper motors from old printers or scanners.

Applying a little diligence and ordinary tools, they are all easily mined. This can save up to several thousand rubles, because, let's say, in stepper motors there are quite large copies of neodymium magnets.

I bring video disassembly of all the devices listed above. It is very helpful.

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The magnets on the refrigerator are pleased with the eyes and keep our lists, photos, postcards, business cards and coupons. Make them with your own hands for yourself or a gift is very interesting and easy. After all, if you think, for the manufacture of magnetic crafts, you can use almost everything that is at hand, it is enough to include fantasy, stocking with glue and mini magnets. In this article we presented 70 inspirational photo ideas, as well as 5 step-by-step lessons, how to make cool magnets on the refrigerator (and not only) from the primary, natural and even thrust materials.

For the manufacture of fridge magnets, you can use three of their kind: ferrite, neodymium (super-magnets) and vinyl (rubber).

If you want your magnetic crafts to hold only light and small sheets of paper, business cards, etc., you can use ferrite (conventional graphite magnets, which are most often used for souvenirs) or vinyl. The latter is a flexible vinyl material with an adhesive basis, which has a small grip strength, but it can cut into segments of different shapes and sizes. An example of using a flexible magnet is presented below.

If you want a magnet to hold things more, it is necessary to use neodymium magnets (super-magnets), which have 10 times more clutch power. For example, for the manufacture of a magnetic hook for a cook or a cutting board, you will need one magnet size with a 1-penny coin. Keep in mind that ideally the magnet clutch strength should be 2 times the weight of the crafts and the subject it will keep.

By the way, the neodymium magnet, unlike the ferritovoy, does not lose magnetic properties over time. Ferrite after 8-10 years turns into a useless piece of iron.

Where to take or buy magnets for making crafts? They can be left from souvenir products or buy / order in construction markets, shops for creativity, as well as specialized online stores.
Working with neodymium magnets, observe precautions and do not attract children's crafts. Keep in mind that two magnet enjoyed to each other may even pinch the finger.
For gluing a magnet to the craft in most cases, superciles are suitable, universal glue "moment" and its analogues, as well as hot glue. If your handicraft is designed to hold really heavy things, then it is best to use a neodymium magnet with a crumpled and screw.
Best on the fridge look at the magnets performed in one style and combined on topics, color or form.

Magnets can be hung not only to the refrigerator, but also on any metal surfaces, for example, on a magnetic board-organizer, extractor or gas column .

In turn, the magnetic board-organizer can be installed anywhere, for example, on the door of the locker

Master Class. 1. Magnets-hooks from branches

You can hang the keys, towels, cookies and other things on these hooks-branches.

Materials and tools:

Dry small, but strong branch with branch;
Hand saw or jigsaw;
Small neodymium magnets;
Glue;
Drill and drill equal to the diameter of magnets;
Acrylic paint (optional).

Instruction:

With the help of a saw, cut the branch so that it becomes like a hook. Then cut the branch along so that its back side is flat as shown below in the photo on the left.

In this flat rear of the branch, drill an in-depth hole under the diameter of your magnet.
Enclose the magnet into the resulting cell.

Optionally, paint the craft and cover the matte varnish. Ready!

Master Class 2. Magnets Storage Banks

If you have cute tin or glass jars, let them in the case, turning the refrigerator door or a magnetic board to the organizer.

Glass cans with baby food are great for storing spices on the refrigerator or hood.

Materials and tools:

Small aluminum banks (banks as in our master class can be ordered to aliexpress 300 rubles. / 10 pcs.). Replace tin cans with glass jars or small plastic containers;
Paint of the desired color (it is more convenient to use paint in the spray) and a matte varnish (not necessarily, but preferably to protect the coating);
Neodymium lamellar magnets (especially if you want to use large banks and keep heavy trivia in them) or magnetic vinyl self-adhesive sheets with a thickness of 0.6 mm;
Superclones "moment" (need if you use neodymium magnets).

Instruction:

Make sure that the prepared banks are clean and dry. Paint them, as well as their covers in 2-3 layers, giving each layer to dry carefully. Next, cover the banks with varnish if it is.

If you use cans with a glass insert on the lid, then before painting it needs to be removed or stacked with painting scotch.

Cut out the circles from the magnetic sheet, their diameter should be slightly smaller than the diameter of the cans. If you use neodymium magnets, then glue them to superciles.

Stick cut-off circles on the bottom of the can, removing the protective substrate.

If you wish, the cans can additionally react. For example, as shown in the photo below.

Master class 3. Magnets made of tin covers (crown)

The idea of \u200b\u200bthe secondary use of the caps from the bottles of soda or beer as a fridge magnets will like not only ecologists, but also decorators. After all, they do not stand at all, but provide a lot of opportunities for decor.

For example, family photos or simply cute paper can be glued inside the covers (trimming cards, cuttings from magazines, etc.).

Homemade magnets-photo frames

The covers can be painted, fill their inner part with hot glue or cork, and then glue magnets to them.

Sometimes the caps from the bottles can not be decorated at all.

Instead of beer covers for making a fridge magnets, you can use lids more, for example, from the cans of the nutella or baby food.

Materials and tools:

Scissors, and better hole punch for scrapbooking for cutting circles with a diameter of 2.5 cm (sold in stores for creativity and costs 200-300 rubles);
Epoxy resin, a container for the preparation of the solution and a wand for interfering;
PVA glue, as well as superchalters;
Small magnets;
Photos suitable in size or any other pictures, for example, from the magazine;
Beer covers (it is best to use bottles with unscrewing, rather than unfolding covers).

Instruction:

Using a hole punch or scissors. Cut the round fragments with a diameter of 2.5 cm. Of course, if you use scissors, you must first make a markup using one of the covers (or plastic cover from the plastic bottle).
Enclose pictures to the inside of each cover using PVA glue (glue should be applied on top of the picture including). Give adhesion to dry completely (!).

Following the manufacturer's instructions, prepare the epoxy resin in the quantity you need. To accurately find out how much resin you need, pour water into one of the covers, then multiply the resulting volume on the number of covers. Ship the working surface to protect it from spills, then fill each lid to the edges. Give the crafts to dry overnight.
Stick to the billets magnets. Ready!

Master class 4. Magnets from plastic mini-toys

The most stylish magnets are easy to make plastic toys, namely, animal figures.

Materials and tools:

Scissors or sharp knife;
Thermo glue in a gun;
Paint and brush if necessary;
Small magnets;
Plastic animal figures.

Instruction:

Cut the toy in half or along.
Fill in the inside of the resulting workpiece hot glue to the very edges and leave to dry.

When the glue is freezing, proceed to painting the crafts (including "filling") in 1-3 layers. At the end it can be additionally covered with varnish.
Now just get a magnet to the figure and enjoy the result!

Master class 5. Magnets of clothespins

Let's open you a small lifehak - magnets from clothespins can not only store lists and accounts, but also clamping bags with food as shown in the photo below. It turns out very conveniently - removed the clothespin from the refrigerator and immediately fixed it by the companion package.

And the wooden clothespins can hold a piece of paper on the refrigerator door and at the same time clamp something between the teeth.

The clothespins can be painted, decorate with sparkles, plane with color scotch tape or appliqués, and you can reap the decoupage technique, following the next simple instruction.