We make a holder for welding with our own hands - instructions, necessary elements, assembly

Despite the apparent simplicity of the design, the holding device for the electrodes (holders) is a critical component. It must meet certain requirements:

• Reliable dielectric protection of the operator;
• Thermal insulation of the handle;
• High-quality wire fastening for the welding machine;
• Ability to withstand currents measured in hundreds of amperes;
• Strong grip of the electrode;
• Easy replacement of the cinder with a new electrode.

The last two points actually contradict each other, so the design of the electrode holder is always a compromise. Professional welders never stop arguing about the advantages and disadvantages of certain holder designs.

We will look at both factory-made and home-made electrode holders.

Factory made holders

1. Collet; Quite a convenient option. Replacing the cinder with a new electrode is effortless. Looks aesthetically pleasing. Advantages : ergonomic handle, excellent protection of the welder from temperature and electrical influences. The disadvantage is the high cost and restrictions on the maximum welding current. Do not leave a short stub - there is a high probability of damaging the handle.
2. Clothespin; The most common factory design. Available in a variety of sizes, for any welding currents and electrode diameters. It’s not very convenient due to the protruding lever, but the reliability makes up for the ergonomic shortcomings. Advantages - there are practically no current restrictions, very reliable contact with the electrode, no additional equipment is required to change the cinder. The disadvantage is the bulky design; installing a new electrode requires a lot of force.
3. Fork (trident). The most famous and popular option, especially for welders of the old Soviet school. At the same time, it is the most controversial design. Today it is not available for sale; only old copies can be found on the secondary market. The reason is prohibited by safety standards due to the high probability of getting radiation burns to the eyes. Advantages : phenomenal simplicity of design. Disadvantages : high incidence of injuries, poor contact with the electrode, additional equipment is required to remove the cinder.

Homemade designs

Trident

This is simply a welding classic. There is hardly an electric welder who has not held in his hands a “fork” welded from three pieces of corrugated fittings. A piece of rubber hose or a handle from a bicycle handlebar was usually used as a dielectric handle. Sometimes they just made do with rag tape.

The option is the simplest to manufacture, however, it is quite inconvenient and dangerous during operation. The biggest problem is removing the cinder. Due to the design features, the electrode was used almost completely - this was always presented as one of the advantages.

In this case, the cinder was removed using a hammer or pliers. You've probably seen more than once a picture of a welder pounding a holder on the asphalt, knocking out the remaining electrode from it. Another disadvantage is poor contact.

Typically, welders attributed a failed weld to “bad electrodes”; in fact, the loss of current is caused by rusty oxides on the surface of the reinforcement. Therefore, a file for stripping is an invariable companion of such a device.

A more advanced option is a rod welded to a metal corner.

This design is more reliable, the electrode is held firmly and the electrical contact is good. There is only one drawback - it is still difficult to replace the cinder with a new electrode.

Trident with spring

Upgraded version of the previous model

This design is made from high-quality steel, preferably stainless steel, to ensure reliable contact. The central finger springs the electrode, which makes changing the cinder somewhat easier.

The design, as well as the materials used, are clearly visible in the figure.

There is only one drawback - expensive materials (stainless steel). At the same time, the cost price is significantly lower than a factory product.

How to make a homemade holder with a spring is detailed in this video.

Collet (threaded) version

The design is reliable and easy to use. There is only one drawback - troublesome production. The technology of the product can be seen in the drawing.

You can make such a holder with your own hands from any metal. The main thing is reliable contact of the welding cable.

Collet (clamping) version

Technical development of the previous version of the holder. Instead of a threaded connection, a spring clamp is used. The obvious advantages of the design are the ease of changing the cinder to a new electrode. Again, a compromise option. The more powerful the spring, the more force is applied to replace the electrode.

But at the same time, the reliability of the contact, and therefore the maximum current value, increases. Conversely, operating comfort reduces the current load. No less important is the second connector, which supplies current to the welding object - ground.

It does not need to provide thermal and electrical protection. But the contact must be extremely reliable. Otherwise, due to resistance, the current strength decreases and welding efficiency decreases. It is best to choose a copper or brass clamp. The cable attachment should be as close as possible to the point of contact with the metal.

If there is sparking at the place where the earth clamp is attached, in addition to current loss, you can get stuck to the workpiece. This will ruin both the clamp and the metal being processed.

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During operation, it is often necessary to move the holder a long distance from the transformer. In order not to limit yourself too much in distance, there are extension cords for both the supply and working cables. A welder's power extension cord is not much different from a regular one. Several requirements are taken into account. Operating current is not lower than 25 Amperes.

Heat-resistant flexible insulation. Reliable plugs and sockets, preferably with a mating lock. If we are talking about a work cable extension, then its cross-section should not be smaller than the main wires. The connection method is also special - special bayonet connectors are used.

Then current losses in the connectors are eliminated.

And this video explains in detail what to look for when choosing a holder for a welding machine.

For a professional welder, and even for an amateur, a good electrode holder is the key to comfortable and convenient welding. When purchasing a holder, you need to know how to choose a much-needed item for welding work, what points you need to pay special attention to, so that later problems do not arise when using it.

DIY options

A homemade holder is assembled taking into account the features and advantages of well-known branded designs. There are more than enough options for making any of the designs we have considered, however, among independent crafts, the leading position is usually occupied by the classic trident.

This type of welding fixture has a very simple structure and can be assembled even by a non-professional.

Trident

Welding holders of this design are shaped like a large fork, pre-welded from corrugated reinforcement blanks of a given diameter and length.

The handlebar handle of an old bicycle or a piece of unnecessary rubber hose can be used as a protective coating for the handle of the product (insulator).

Sometimes, in order to improve the insulating qualities of the coating for the welding machine holder, rag insulating tape is used.

However, many users often do not stop at the simplest design, since it is quite old and not convenient enough to use.

This is explained by the fact that not all performers are able to combine two contradictory requirements for this instrument, which require rigidity of the electrode attachment and ease of its removal. In addition, reinforcing bars oxidize quite quickly and cease to meet the requirements for them.

It is for this reason that many amateurs and professionals choose an improved version of the welding design and modify the trident, equipping it with an additional spring.

This holder looks like the same fork, the teeth of which are located almost in the same plane. The working electrode is fixed between the outer teeth, and the central tooth additionally fixes it with simultaneous springing.

To manufacture welding equipment in this design, the user will have to stock up on workpieces made of particularly strong metals, such as, for example, high-alloy stainless steel.

Only they can ensure reliable contact of the trident with the electrode and ease of replacement of the latter. A rubber tube of suitable diameter can be used as a protective dielectric coating on the handle.

Device

Let us briefly consider the design of the electrode holder. Several important factors depend on the design of the device:

• quality of welded joints;
• master's labor productivity;
• convenience and safety of work.

inexpensive electrode holder

A standard type holder is a tool consisting of several parts: body, clamp, handle, moving parts. But different species may have some structural features . More details below.

Let us briefly consider what types of electrode holders exist. Electrode holders are divided into universal and specialized . The production of both groups is regulated by GOST standards. For homemade ones, see the separate subheading below.

The universal electrode holder is the most popular, as it allows welding in various spatial positions.

There is also a more detailed classification:

1. Clamping clothespin holder (spring or lever) is characterized by a simple design and low price. The main disadvantage is weak fixation of the electrode.

This type can be made in two modifications:

• simple is compatible with most types of welding machines and the complete absence of non-insulated areas;
• automated ensures high seam quality, significant energy saving and automatic arc ignition.

2. Screw electrode holders allow the cathode to be firmly fixed. The main disadvantage is the need to constantly unscrew and tighten the screw in the clamping device when changing the material for welding.

We suggest watching a video where the user compares two holders, a screw one and a clothespin, and makes a choice in favor of the screw one.

3. The design of non-flammable is designed in this way: the electrode is not fixed with a clamp, but is welded to the end of a rod with an insulated surface and completely melts during the joining process. Then the next rod is taken.

4. Quite popular among welders of any level is the trident fork . However, this type, made in a simple modification, poses a serious threat to the health of the master due to the large number of unprotected parts.

Homemade fork holder

5. The collet holder is used in argon arc welding torches.

6. The electrode holder with a rotary type clamp allows you to quickly and reliably fix the rod at only one angle.

In addition to the above types, there are also special-purpose units that are used to create a certain type of seam.

Types and characteristics of holders for electrodes for welding machines

An electrode firmly fixed at the required angle will ensure a high-quality and even seam. You should select the right holder for the welding machine based on power and type of work.

If you wish, you can make a classic trident yourself. But compared to store-bought devices, it has more disadvantages than advantages.

It is better to carefully study the offered models, check the metal of the clamp and buy a high-quality holder for welding.

Recommendations for use

The welding electric holder is designed to fix the electrode during operation and supply operating current to it . Its handle is covered with insulating material to protect against accidental contact with conductive elements.

Work with the welding holder is carried out in a dry room or outdoors in clear weather. The electrode holder is selected according to the power of the work being carried out and the type of material.

Specifications

All electric welding equipment is characterized by current strength and rated voltage. In addition, the electrode holders are characterized by the following data:

• good contact with current supply elements;
• strong fixation of the electrode;
• reliability;
• dimensions;
• quality of insulating material;
• rotation of the electrode relative to the handle;
• guaranteed service life.

In terms of power and load-bearing capacity, the electric holder is available for household and professional use . The type of work determines whether the gas burner is built into the holder or attached.

Kinds

Depending on the type of work, the electrode has to be rotated at different angles and worked in different spatial positions. If the hand does not pass freely into the welding zone, the angle of inclination increases. There are several types of welding holders. Each has its own characteristics.

Each specialist makes his choice, based on experience and type of work, which holder he needs for the job.

Pin

The most common hand holder . Like a clothespin, it clamps the electrode with a spring.

It has copper jaws with notches and firmly holds the rod in any position, including 180⁰ in relation to the handle. Insulating plastic covers cover all metal parts from contact.

The clamp allows you to quickly change electrodes by pressing a lever. The remains are small, up to 30 mm.

Fork trident

The oldest holder design . It consists of 3 pins arranged in a triangle. An electrode is inserted between them. The fixation is tight.

You can work either with 2 mm alloyed electrodes or insert uninsulated wire 8 - 10 mm thick in long pieces when welding casting defects and welding large parts.

It is impossible to install carbon and powder electrodes with low plasticity; they break.

The biggest disadvantage is the exposed, non-insulated trident rods . They can cause electric shock upon contact.

A professional welder can use a trident clamp without any problems. It is difficult for a novice specialist to work with a holder in which the ability to adjust the electrode angle is limited and there are exposed conductive elements.

Head of the Health and Safety Department of the KZMK Welding Structures Plant Yu. P. Bakai: “The classic trident is prohibited for use in production by the Ministry of Labor Protection due to its danger. It does not have protective insulation and in humid air there is a high probability of electric shock to the welder.

In the non-working position, a short circuit occurs upon contact with metal. A person who touches a part on which the handle has fallen can be injured. A light strike from a trident is enough to ruin the coating of a metal sheet.

At the points of contact, paint is burned, galvanized, laminated and coated with corrugated sheets.”

Collet

The collet holder has a narrow specialization. It is used in argon arc welding with a non-consumable electrode. The tungsten rod is inserted into the collet with the end without insulation and clamped with a nut.

Non-burning holder

The main advantage of the flame-free design is the absence of waste. The electrode is welded to the protruding rod and burned completely .

It is impossible to change the angle of inclination.

Screw

The screw holder is distinguished by strong fixation of the electrode. The rod is inserted into a special hole and tightened with a screw . The technological residue is like a clothespin.

Lack of time spent on installing and removing the electrode. The angle of inclination cannot be changed.

How to choose the right one?

When choosing a welding holder, several parameters must be taken into account:

• maximum current used during operation;
• device design;
• sponge material;
• quality of insulating material;
• ease of placement in the hand;
• price.

The maximum current is determined not by the power of the welding machine, but by how many amperes will be used during operation, on average, 300-500 a . The design is selected for the type of work .

For home welding of small parts and thin sheets, produced in small quantities, there is no point in purchasing an expensive electrode holder for a welding machine designed for high currents. It will last a very long time, but will not be used at full capacity, and will have a large weight and size.

DIY options

A homemade holder can cause electric shock. It has exposed conductive elements and a poorly insulated handle.

How to do it yourself? Most often, craftsmen make a trident . Its structure is so simple that a drawing is not needed. Three rods of mild steel, usually reinforced, intended for building structures, are slightly curved at the bottom, connected and wrapped with copper wire at the bottom. Then a handle made of insulating material is placed on the wire.

How not to buy low quality?

Unscrupulous manufacturers make welding holder jaws from steel and coat them with copper . It is difficult to distinguish the details externally, especially if a person does not have special knowledge. The easiest way to check is to take a magnet with you to the store. It sticks to ferrous metals and is not magnetic to copper.

The welding holder is accompanied by instructions that describe the device and its technical characteristics. The manufacturer provides a warranty period for quality products.

There are markings on the body. It includes the manufacturer’s brand name, a mark confirming quality, the date of manufacture, as well as GOST, to which this product corresponds. A good holder has all the necessary documents and meanings on the case .

You should not skimp on the holder and buy a cheap one, or on the market. Such savings will lead to unnecessary expenses. The device will quickly fail and you will have to buy a new one. The sponges will start to burn first. It is impossible to make an even seam if the electrode is loose and falls out. Insulating parts made of poor quality material will burst and fall off.

Why buy separately if it is already included with the welder?

Manufacturers of welding machines do not bother themselves with the selection of high-quality components. They save on welding holders . As a result, the device quickly fails and you still have to buy a new holder.

The weak point of the tool is the jaws. They are made of aluminum or steel and burn out quickly, conduct current poorly and get hot.

The quality of the weld and ease of use depend on the correct choice of holder. It is necessary to focus on the maximum operating current and volumes.

A good electrode holder should:

The electrode holder must meet the following mandatory requirements:

1. Reliability and confidence in fixing electrical conductors of any diameter in the required position.
2. Possibility of quickly changing the electrode exit angle.
3. Good and complete contact .
4. Ensuring quick electrode replacement.
5. Durability of use.
6. Lightness of the device.
7. Insulation of live parts.
8. Possibility of welding in hard-to-reach places.

What is the correct holder

What is he doing? In short, it controls the electrode during welding: it secures it and supplies the welding current. Hence the desirable properties.

Homemade holder.

Functions and technological properties that a welding holder must have:

• provides strong fixation of the electrode with a changing angle of electrode exit;
• gives reliable and complete electrical contact;
• durability;
• capable of quickly replacing electrodes;
• should be light weight so that the hand does not get tired. The usual weight of the holder is about 350 g. For a current of 500A, the device is more powerful and can weigh up to 750 g;
• Mandatory ergonomics: comfortable position in the hand, requiring no effort.

One of the classic stereotypes is buying a larger and more powerful device with a pipe dream in your head that it will work longer and better. In reality this does not happen. This also applies to the welding holder.

You need to buy it specifically for the load you are going to work with. Here it is important not to make a mistake with the manufacturer’s brand: choose a reputable brand, it will not let you down.

How not to buy a low-quality holder for a welding machine

Live parts of a quality device must be made of copper and protected with insulating material. Some unscrupulous companies manufacture live parts from steel and then coat them with copper. Thus, the parts become very hot and burn quickly.

They look like copper and it is difficult for a non-professional to visually distinguish them from “all-copper” parts. There is one surefire way that requires a magnet. It is necessary to bring a magnet to the part being tested; if the parts are magnetic, then they are made of steel.

Copper jaws of the holder

Popular manufacturers

Let's move on to popular manufacturers of electrode holders.

Telwin is a world leader in welding machines, cutting systems and chargers. The Italian company offers holders under the same brand.

Spring electrode holders for welding work from the German company ABICOR BINZEL are distinguished by the following characteristics: high-strength and heat-insulating handle; rigid fixation of the dynode in four positions; ergonomics; strength; versatility of use.

Trafimet was founded in 1974 in the Italian city of Vincenza . The manufacturer offers spring-type tools with the following technical parameters: low weight of the unit; reliability; ease of use.

The Russian company produces inverter equipment. Holders from this manufacturer are manufactured in compliance with all state standards; allow welding in all positions, as well as in hard-to-reach places.

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The Swedish concern
ESAB is one of the world leaders in the production of equipment, materials, accessories, protective equipment and other accessories for welding.
The wide range also includes screw-type electrode holders, characterized by maximum safety and quality of work. See the video above. EWM 's head office and production are located in Mündersbach, Germany. The company specializes in the manufacture and sale of a wide range of equipment, including electrode holders of various types.

The Russian brand BRIMA occupies one of the leading positions in the market of equipment, components and materials for welding. Electrode holders are designed for three groups of consumers: household, professional and industrial.

SANTOOL a reliable manufacturer and supplier of quality welding products. The equipment is produced under several brands. The devices have a reliable fixation, electrically conductive parts are insulated from accidental contact.

The Russian company Skrab sells products under its own brand of the same name, and also supplies professional equipment from leading manufacturers. The equipment is used in many fields of activity.

SIBRTECH is a domestic manufacturer of high-quality tools and equipment. The company offers clamp-type electrode holders. When working with units, it is important that the electrically conducting parts do not come into contact with the product being welded or with human hands. regarding the products of this manufacturer , watch the video above and below .

The Italian company Quattro Elementi is engaged in the manufacture and sale of equipment, materials and accessories. Ergus brand .

Kord company is the largest Russian manufacturer of innovative equipment and accessories for welding. The clamps presented in the assortment are created in accordance with GOST standards and have different types of design.

In 2014, the Moscow company opened its own production of electrode holders and grounding terminals under the Saturn . The clamps are easy to use and are ideal for both domestic and professional level welding inverters.

Why buy a welding holder separately if it is already included with the welder?

Beginning welders often ask the question: “Why buy separately holders for a welding machine if the inverter is already equipped with a clamp?”

The standard holder from the inverter is broken

The answer to this question is quite simple: such an electrode holder is of low quality, and accordingly it will not work for long. In addition, unscrupulous manufacturers often use cheap materials to make components for the inverter. This has a positive effect on price and a negative impact on quality. Most often, the clamping jaws fail; they burn out and no longer provide fixation of the rod.

How to choose

Choosing a tool is a responsible task designed to make further work safe and efficient, and a welding electrode holder is no exception. Let's consider what should be taken into account when choosing what parameters.

1. Amperage. The electrode holder must match the current strength of the welding equipment used. So, when using a welding inverter with a current of 300A, connecting to it a holder that is not rated for 150A is not a very good idea. The electrode holder in this mode will last no more than two days, since the electrode clamp will burn and fail. In addition, using a holder with a lower amperage is simply not safe.

In the opposite situation, when holders are purchased “with a reserve”, that is, a 300A holder is installed on a 160A device, the solution is safe, but not very convenient for operation. With a higher amperage, the dimensions and weight of the holder are larger (which will affect the welder’s fatigue and the ability to get into hard-to-reach places, see the following requirement) , since the insulation is thicker, the cast parts, and the electrode clamp are more massive. Therefore, it is necessary to select a holder based on the strength of the welding current.

2. Dimensions and weight. For convenience, the device should have low weight and small dimensions. Extra grams will in no way affect short-term work, but during long-term processes that require attention and accuracy, a heavy unit can cause discomfort and muscle tension . Therefore, when choosing from several models with similar technical characteristics, you should give preference to the lighter and more compact one.

Dimensions and weight of welding holders - feel the difference

3. Work is often carried out under unfavorable conditions: dust, dirt, humidity, too high or low temperatures. Compensation for these factors should be the high reliability of the electrode holder. The body of the device is most often made of plastic with high insulating properties. When it comes to clamping, professionals prefer a molded one, since plate type jaws are more prone to failure. The most reliable option is a screw device; its threaded fixation guarantees an unambiguous position of the rod.

4. Well-known manufacturers maintain their reputation and carefully control the quality of their products. Therefore, proven brands are in high demand among consumers. Here it is worth adhering to the principle of sufficiency - an inexpensive holder from an unknown manufacturer will most likely not last even a month at a shipyard if it is operated in two shifts, but for an amateur welder it will last for two or three seasons, or even longer.

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5. The next, most important one, cost, directly depends on the previous factor. The price varies widely. Cheap models, by definition, cannot be distinguished by a high level of quality and reliability, thoughtful design, and in rare cases they are designed for long-term operation. But an inexpensive tool is well suited for an amateur welder to perform one-time work. On the other hand, to carry out household welding there is no need to buy an expensive device, which is necessary for professional and industrial scales.

6. The greatest demand among customers is for units capable of fixing electrodes of any diameter . Since such devices are universal and can be used for a variety of work.

Recommendations from experienced welders on selecting an electrode holder

1. Experienced welders advise paying attention when choosing a holder to the quality of the tool and its cost. It is not recommended to purchase the cheapest products, but you should not choose the most expensive ones either (especially when the holder is planned to be used for one-time work at home).
2. The most reliable tool is a holder with threaded fixation, which also has the longest service life. This tool allows you to select the required angle of the electric cathode.
3. It is better to give preference to products that provide fixation of the electrode depending on the current value.
4. If welding work involves traveling to different sites, then you should take care of a spare holder. In this case, savings are inappropriate.
5. If you decide to buy a welding holder for 500 rubles, then you can’t count on its long-term operation. This holder can be used at home to perform one-time work, but not for professional welding.
6. If you purchase an expensive tool, then you need to carefully analyze its quality characteristics. Welding clamps for professional welding cost approximately 3 thousand rubles.
7. Also, when choosing a holder, you need to pay attention to what load it is designed for in amperes. Depending on the parameters and weight of the welding inverter, the current load increases. If the current required for welding is approximately equal to the generator current, then it is recommended to purchase holders that can withstand current loads of 200-500 amperes.
8. If you purchase a welding holder for welding equipment designed for 200 amperes, and you carry out welding work at 300 amperes, then the tool will last a maximum of two working days. During the welding process, the smell of burnt plastic begins to be felt very quickly when the electrode holder heats up. This can also occur due to poor contact between the electrode and the clamp. As a result, the tool clamp burns out when performing welding work and very quickly fails, that is, it becomes completely unsuitable for further use.

Factory fastener models

Before considering a homemade electrode holder, you should learn about factory models. There are several types of them.

Collet

A very convenient type of clamp, it is light and compact. The electrode here is easily replaced with a new one. The collet handle protects well from electrical and temperature influences. The disadvantages include high cost and limitations on operating current. You should also not leave a short stub, as this can damage the handle.

It is important to remember that as the length of the electrode decreases, the current passing through it also increases.

Pin

The most common type of restraint devices. Depending on the strength of the operating current and the diameter of the electrodes, the holder can be of different sizes. The clothespin can be used when working with almost any current value. The contact with the rod is good, and with the help of the handle you can easily get rid of the cinder. The disadvantages of clothespins include a larger design and a more complex process for replacing the electrode.

Fork (trident)

Currently, holders of this type are not commercially available; they can only be found on secondary markets. The fork differs from previous types in its simple design. The electrode is almost completely gone, the cinders are very short. But, perhaps, these are all the advantages of the trident. The trident does not comply with safety regulations, which causes a high level of injury risk. In order to remove the rod from the fork, it is necessary to use additional tools, such as a hammer or pliers.

DIY welding holders. How to make a welding holder?

If desired, you can make a homemade holder for welding. Perhaps homemade models are inferior to factory ones in quality and reliability, but they can also be used. Such holders are a fairly cheap analogue to expensive factory models. Here we will look at the designs of homemade holders of various types.

Trident

We talked about this type of retainer above when we described factory models of retaining devices.
This model is easy to make yourself. The trident consists of three pieces of reinforcement welded together in a certain way. In order to protect yourself from electric shock, you can put a piece of rubber hose on the handle. Despite the simplicity of the design, it is necessary to use a homemade electrode holder with extreme caution, as there is a risk of injury during operation. Due to the fact that the reinforcement is constantly covered with scale, it must be cleaned in order to obtain a good weld. Scale affects the loss of current, thereby impairing contact and making the welding process less efficient.

Metal corner and reinforcement rod

This option is more effective than the trident. Here the contact of the rod with the holder increases, which has a positive effect on the welding process. But a homemade holder for electrodes of this type has the same disadvantage as a plug - the electrode is difficult to remove.

Fork with spring

Modernized version of the fork. The trident (fork) with a spring must be made of high-quality stainless steel, which will improve the quality of the welding process. A homemade electrode holder of this design has a spring-loaded finger instead of one reinforcement rod, which makes it easier to replace the cinder with a whole electrode.

The main disadvantage of this type of retainer is that the design involves the use of more expensive materials.

Threaded and collet fasteners

The thread lock can be made from available material. The manufacturing process is quite difficult. The electrode here is inserted into the provided hole and pressed with a bolt. In the clamping version, the rod is pressed against the holder by a spring-loaded latch. These holders provide good contact, which has a beneficial effect on the welding process, seam formation, and current flow.

Requirements

First of all, you need to pay attention to the fact that a homemade welding holder must meet the following requirements, consistent with welding safety standards:

• the handle of the holder must provide reliable protection for the welder (that is, be made of dielectric);
• the holder as a whole must have good thermal protection;
• the current supply wires should be mounted on the holder in such a way as to prevent the possibility of their damage during the welding process;
• the electrode holder is designed for electrical currents of hundreds of amperes;
• the welding rod itself must be fixed in it quite rigidly and as reliably as possible;
• changing one electrode to another should not cause any difficulties or time delays.

Taking into account the fact that the last two requirements for the design of the holder are practically mutually exclusive, its manufacturer must have a good imagination and practical ingenuity to resolve this dilemma.

To all of the above, it should be added that homemade devices for a welding machine will be more reliable and productive if, in their manufacture, we focus on time-tested branded products.