In recent years, it has become increasingly popular use of search magnets. Indeed, the range of their applications is quite wide. Having such a useful thing as a search magnet can add pleasant variety to our hobby. And the choice provided to customers is impressive. In most cases, magnets are used to search in all kinds of bodies of water, although of course there are other possible applications. What can a magnet do?
The fact that they can lift all sorts of interesting things from wells, lakes, rivers and streams is understandable, but magnets differ in their maximum lifting force and how to do it right choice? Here, in general, the advice is simple; if you do not have any specific tasks, then the most optimal would be a magnet with a pull-out gain of 300 to 600 kilograms. As far as I remember, search magnets appeared for diggers not so long ago, in 2007-2008, there wasn’t much variety then. However, progress does not stand still and, based on requests, manufacturers have launched the production of the most popular products. No one will dispute that for some tasks much weaker magnets, for example 120 kilograms, are quite sufficient, but I repeat, time has shown that search magnets from 300 to 600 kilograms per pull are the most universal. Here it is necessary to take into account the fact that the maximum tearing force is achievable on a clean, flat, steel, polished surface without dirt, scale and chips. Now imagine where and how treasure hunters use magnets. As a rule, it is unknown, in the case of underwater searching, which part of the plane the magnet will catch the prey. So a certain margin of safety is necessary, not to mention what the weight of the object itself will be, how tightly it is embedded in the soil or silt and what condition it is in.
Neodymium magnets made of very high quality and enclosed in a reliable case, in no way stamped, only turned with an anti-corrosion zinc coating, the same coating on the magnet itself. Thanks to the presence of a zinc coating, the search can be safely carried out in both fresh and sea water.
All search magnets are equipped with eye bolts and have through holes for removal using the same eye bolt (mechanical separation).
On sale you can find both double-sided search magnets and single-sided ones. This is a matter of choice and personal preference, but lowering a magnet into a well or trawling a river with it, and throwing it into the same river, are very different things.
If we talk about purposefully collecting ferrous metal for sale, then double-sided, it seems, will be more catchy. But many people pay off their travel costs by collecting CherMet. A little about the land use of magnets. I have one friend (a foundation worker) who prefers to clean his area of activity from metal debris with a search magnet. He really likes it.
It is clear that when the floors are removed and you have to work in the underground space, preliminary cleaning with a magnet will not hurt at all.
By the way, just for those places where you can’t get to with a regular magnet there is search magnet "Rod".
I saw it on sale and Neodymium magnets not inserted into the body at all. 
In general, such a thing as a magnet can be useful under a variety of and often unexpected circumstances, and not necessarily related to a cop.
I'd like to mention a couple more things.
Firstly.
Magnets began to be counterfeited much earlier than metal detectors, so be careful.
Secondly.
In MDRegion stores, there is usually a printout like this attached to the stand with search magnets. I highly recommend it, don’t be lazy to read it.
The title speaks for itself.
Magnets are not toys!
Make sure children do not play with magnets.
I will not list here everything that is written there. Just one example. Being somewhere on the bank of a river with a powerful magnet in my hands, it never occurred to me to ask the comrades about this topic: did any of them have a pacemaker?
Here's what I read on this piece of paper:
- Magnets may affect the operation of the pacemaker.
- The pacemaker may go into test mode and cause illness or death.
- The cardiac defibrillator may stop working.
- If you wear these devices, keep a sufficient distance from the magnet.
- Warn people around you who may be using these devices.
Search magnets today are gaining great popularity not only among novice treasure hunters, but also among professionals. Naturally, a magnet cannot replace a treasure hunter, but with its help you can also make many amazing finds.
If a treasure hunter is actively used on land, then search magnets in the vast majority of cases are used to search for archaeological valuables at the bottom of rivers, lakes, crossings, etc.
It is necessary to think in advance about what finds can be found in a particular location. Based on their weight, you should choose a search magnet. They start at 120 kg, but can also reach 600 kg.
At the same time, the weight of the search magnet is no more than 1.5 kg. These figures indicate how heavy a load a magnet can not only lift, but also hold for a long period of time.
- by lifting weight;
- by price;
- by the number of eye bolts, etc.
In particular, the eye bolt can be screwed not only into the plane of the magnet, but also into its end part. The cheapest search magnets are single-sided. They are less effective naturally.
Double-sided magnets are more expensive. All of them are available at affordable prices on the website ndfeb-magnit.ru.
Of course, the most affordable search magnets are Chinese. However, if we are talking about a truly effective search, then you can refuse them. Of course, search magnets can be used to clear the field of small metal objects on the surface.
This is done so as not to break out with a shovel at every signal from the metal detector. Chinese analogues are also quite suitable for these purposes. But if the work is to be done at great depths, where the find is definitely covered with a large layer of silt and rust, it is better to rely on high-quality magnets.
In particular, a Russian manufacturer, which has production facilities in Kaluga (RedMag), produces magnets for the space industry. There is no doubt about their quality.
Of course, they are much more expensive than their Chinese counterparts. But with the latter, you will be able to pass by a sensational find, when a domestic product will allow you not only to detect, but also to pull an object weighing up to 600 kg to the surface.
Poryvaev will clearly demonstrate different kinds neodymium search magnets from a Russian manufacturer:
Despite the fact that today it is quite affordable to purchase multifunctional metal detectors, magnetic search has not lost its relevance. The scope of its use is very wide. In everyday life, it is used to collect small metal objects: pins, fasteners, etc. And if you go into nature, you can use it to find real treasures in the sand or reservoirs. Search magnets are also used to clean wells from objects that have fallen there. Since there are so many areas of application, the choice of magnets must be approached with great care.
Basic requirements and technical characteristics
Each search magnet is a disk made of neodymium magnetic alloy, glued into a steel casing. Redmag magnets are zinc coated for use in water and have an eye bolt (double-sided magnets have two eye bolts).
To begin with, it should be noted that searching with a magnet is usually carried out in those areas where, for one reason or another, the operation of a metal detector is difficult or its purchase is impractical. Accordingly, the basic requirements for magnets were developed. They should be:
- . small weight and size;
- . with reliable fastening;
- . capable of lifting objects whose mass is many times greater than their own.
Which search magnets to buy?
It is difficult to answer this question unambiguously, because it all depends on the purpose of the acquisition. So, for example, such products could be:
It is advisable to purchase the latter in cases where there is work to be done in reservoirs, for example. But for vertical searching or for everyday use, the first option is more suitable. The choice also depends on what can be found with a search magnet. For fairly large and heavy objects, it is necessary to choose products with a sufficiently high ability to lift loads. The f400 search magnet can lift loads up to 400 kg.
However, we should not forget about the fact that the higher the load capacity, the higher the price. Therefore, fairly powerful devices with a tearing force exceeding one hundred kilograms should be purchased only in cases where you need to detect metal in the ground, crevices, etc. It should be taken into account that uneven surfaces, dirt and corrosion reduce the adhesion force. Therefore, it is desirable to have a certain reserve of carrying capacity.
It is also important to choose and buy a rope for a magnet. We recommend reliable "climbing" ropes made of synthetic materials.
There are two types of search magnets: double-sided and single-sided. They also differ in size for each type from F 120 – F 600*2. When a person first encounters such diversity, he involuntarily asks himself the question - which magnet to choose? Below we will try to figure this out.
All search magnets are marked F (strength) and a number indicating the adhesion force of this product. For example, F 400x2 - adhesive force of 400 kg, and the designation x2 means that the magnet is double-sided. It is worth remembering that this is a “relative” adhesive strength, in fact it may differ, everything will depend on the metal to which the magnet is attached. The adhesion force is calculated: when the magnet contacts its entire area with a thick (at least 1 cm) polished steel plate, it is torn off strictly perpendicular to the surface. Under ideal conditions, such a search magnet holds more than 500 kg. It is difficult to achieve such results in magnetic fishing. Most often, the metal in the water is uneven, rusty and dirty; the magnet clings to it only with one edge, and not with its entire surface. Therefore, the magnet breaks off when pulling out a small piece of iron weighing only 40-50 kg. This is where everything will depend on the size of the search magnet; the larger it is, the better it will stick to the iron. This applies to “catching” large metals. If you plan to search for coins, spinners, etc., then a small one like F 200 will do the job. If you are looking for scrap metal, then search magnets from F 300 to F600 are best suited for this. Which one should you choose? It all depends on your physical and financial capabilities. Everyone can throw an average search magnet F300, F 400, F 600, but F400x2 or F600x2 will be more difficult without good physical strength. preparation. Keep in mind that the price of a search magnet depends on its size; the more powerful the magnet, the larger it is in size, and the price will be higher. An expensive magnet will pay for itself in 3-4 “catch”, because with it you will catch much more scrap metal than with a small one. If you are going to look for metal in large quantities, then buy a large magnet; if it catches something, it will hold it tightly.
Double-sided or single-sided magnet?
We've figured out the strength of search magnets and sizes, now let's see how double-sided magnets differ from single sided magnets. From the name it is already clear that it has one working surface - two. Double-sided has two holes - central and side, for attaching an eye bolt. A single-sided search magnet is more suitable for searching from piers, bridges, boats, as well as for searching in wells. A more universal search magnet is double-sided. It can be cast from the shore (the eyebolt is screwed into the side hole), as well as from bridges and boats (the eyebolt is screwed into the central hole).
