How to choose metal scissors

Criteria for choosing metal nibblers

Nibblers work by moving punches to press down sheets of metal, resulting in a neat, thin cut. The die-cutting process can be effectively used with metal thicknesses up to 4 mm when working with sheet steel, copper or aluminum, but if cutting sheets of greater thickness is required, square punches must be used.

Advantages of nibblers

After the work of the nibblers, a smooth and perfectly prepared edge of the metal remains. This means that no additional processing is required, and given the speed of metal processing, the cost of products or workpieces is sharply reduced.

The main working unit (punches and matrix) can be replaced in a matter of minutes; no maintenance activities are provided for this element.

That is why the replacement of punches is carried out in pairs so that they strictly correspond to each other and are free from wear or structural defects.

What types of work are nibblers used for?

Cutting holes at different radii;
Working with blank templates;
Cutting several sheets of metal simultaneously to increase the speed of work;
Straight cuts;
Curvilinear cut;
Working on uneven ground.

Metal cutting occurs without overheating the surface of the part, generating sparks, burrs, or damaging the decorative coating. The main disadvantage of this type of equipment is the dimensions of the machine, however, if we take only the process of cutting metals, then this technique is the most effective and simple.

In addition, the operator occupies a comfortable position during the work, has a good view of the product, and can easily control the process.

Who would benefit from purchasing cutting scissors?

Most often, this type of equipment is used by manufacturing enterprises, service stations, and scissors are used in workshops. Despite the relatively high cost of the equipment, it significantly increases the productivity of working teams, guarantees quality and provides an adequate level of safety. In terms of maintenance, the equipment is not expensive, there is no need to attract highly qualified personnel.

Source: https://ao-dolina.com/articles/vibrat-nognicy-metallu/

What types of metal scissors are there - how to choose a professional hand tool

Metal shears are a simple design that ensures uniform cutting of metal sheets. They are widely used in installation and plumbing work.

How to choose the right equipment model for home use? The answer to this question is presented in our material. Advice from experienced experts allows you to avoid common mistakes when purchasing this product.

How do metal shears work?

Manual metal shears evenly cut metal sheets without forming excess iron chips. They cut the material by deformation. In the process of pressing the levers, high pressure is observed, which helps to separate the iron into several pieces.

To make a cut with a uniform blade surface, the knives must be positioned at a certain angle and with a small gap. These parameters are selected based on the material and strength of the metal sheet. For example, for straight scissors this gap is 0.9 mm.

The sharpening angle of the blades is 80 degrees. This ensures a smooth edge without characteristic burrs. In the future, these parts will not be dangerous to humans.

Types of scissors

There are two categories of shears for cutting sheet metal. These include:

manual models;
automated designs.

The first type is designed for cutting small parts made of aluminum or steel. They consist of two cutting bases and two long handles. The last parts create the necessary pressure during the cutting process. The longer the handles, the easier it is to cut iron.

At the end of the working process, the knives close together. In turn, they are divided into: right-sided and left-sided. This criterion ensures uniform division of the web clockwise and counterclockwise.

Manual models are divided among themselves according to the material and method of their manufacture:

forged;
cast;
composite - lever.

Forged scissors

Forged models are distinguished by their high cost and durability. They have sharp cutting bases that can cut through thick steel and aluminum. The handles are made of durable polyamide.

Cast scissors

Cast products consist of less durable material compared to forged products. They wear out much faster than previous models. The products are characterized by low cost but effective performance.

Composite lever models provide uniform pressure on the cutting surface. This happens using a lever mechanism. To separate the handles, the design is equipped with a reverse spring mechanism, which makes these scissors much more convenient than simple straight products for working on metal.

The blades are made of durable steel, and the tool handles are made of soft plastic. During operation, it quickly deforms or slides beyond the metal base.

Lever models

They are intended for cutting thin metal whose thickness should not exceed 5 mm, as well as iron rods and metal corners.

The design of lever scissors contains two flat blades - knives, which are connected to each other with a large screw. The photo of metal scissors shows modern models of equipment.

The lower part of the knife is fixed in the workbench area, and the upper part is fixed in the handle area. This facilitates the process of deforming a dense surface. The kit includes replaceable blades for cutting metal parts of various thicknesses.

The most advanced models of lever metal shears are on sale. They are equipped with an adjustable stop for uniform cutting and a powerful lever in the form of a handle.

The sharpening angle of the lower blade reaches 60, and the upper edge of the cutting base is presented in the form of a convex part. It is also operated by a lever.

The cutting iron is fixed in the area of the lower knife; the guide markings should be in the area of the upper knife. This model of equipment is considered the best metal scissors.

The deformation process occurs as a result of pressing the upper knife along the marking line. The cutting base contacts the lower blade, resulting in a smooth edge and neat iron piece.

Photo of metal scissors

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Source: https://instrumentgid.ru/kakie-byvayut-nozhnicy-po-metallu/

How to choose the right metal scissors - all types, recommendations and videos

Anyone who has ever worked with thin sheet iron or profiles knows that a hacksaw is a bad helper in this case. Cutting a sample with this tool, even in a straight line, is not an easy task. But metal scissors will allow you to make a cut along any outlined contour, no matter how complex its configuration may be.

Of course, if you choose them correctly. What types of metal scissors are there, what to look for when purchasing - we will sort out all the nuances of the purchase.

Types of metal scissors

This general information will help the reader make his choice. At the very least, it will become clearer what exactly is worth purchasing to complete a particular task. Since experts are well versed in this topic, the emphasis will be placed only on scissors that are used for cutting metal in domestic conditions.

Manual

For straight cutting, their working parts (cutting edges) have an increased length.

For curved cuts, these scissors have exactly the opposite. Their “jaws” are quite short, which allows you to change direction at any time and cut metal precisely along the radius.

Lever (guillotine)

You definitely won’t be able to make curly cuts with such scissors. The advantage of the lever design is that it allows you to cut thicker metal than with manual models. But there is also a minus – lack of mobility. Such scissors are fixed at the place of work, so performing a number of operations will be difficult (you will have to bring metal to the tool) or impossible (for example, at height). The manufacture of such guillotine scissors is described in detail here.

Roller

These metal scissors are the latest development. They are universal in use, their effectiveness is much higher than that of the first two types, but the cost is such that the purchase is justified only if they are used professionally and systematically. Such models are not interesting as a household tool.

Weight

The raw material for a quality tool is steel, and this applies to all its structural elements. Such scissors will last quite a long time, and the cut will always be as precise as possible, since the edges dull slightly even with intensive use. Therefore, you need to take the scissors in your hand and check how heavy they are. The low weight indicates that in addition to steel, other materials were used in production. Lighter and therefore less durable.

Features of the material

It is advisable to choose scissors made of stainless steel. No explanation is required on this point, but it’s worth mentioning.

Possibility of regulation

Since in everyday life you have to work with samples of various thicknesses, correctly setting the cutting depth will significantly increase productivity.

Cutting side

Here we are talking about the fact that each buyer chooses scissors for himself. Accordingly, depending on which hand is the “working” one, the tool is purchased with either a right-handed or a left-handed cut. Why should this be taken into account? The wrong choice will complicate control over cutting accuracy, since you will have to constantly “look at the other side.” For some it is unimportant, but the fact that it is not entirely convenient is clear.

The same rule applies to hand scissors with short “jaws”. In which direction should the bending line be drawn? If you often have to make figured cuts, it makes sense to purchase not just one, but a pair of “versatile” scissors. Moreover, their price (manual models) is not that high. Many manufacturers make it easier for potential buyers to choose by producing scissors with handles of different colors. For cutting clockwise - with green ones, counter-clockwise - with red ones.

Tool capabilities

Each product is characterized by a maximum cutting depth. For example, scissors priced at 75 rubles are only suitable for working with tin. But it is unlikely to be possible to cut a thicker corrugated sheet with them so that the edges are even and without deformation. This is what we should proceed from.

Brief overview of brands

The author does not intend to advertise specific samples of metal scissors. The point is different. Any competent specialist associated with the field of sales will confirm that we mostly choose something “with our eyes.” And this is precisely the main reason for further disappointments, complaints that what was acquired is not exactly what we would like. Therefore, it makes sense to arm the reader with preliminary information about those models that are most often present on the windows (counters) of retail outlets.

"Kraftool"

For cutting metal up to 1.5 mm - a good choice. These scissors can be used to work with sheet metal, angles or other profiles. With certain skills, it is not difficult to make a figured neckline. It is products under this brand that are in greatest demand.

Price – from 850 to 1,050 rubles.

"Bison"

No less popular domestic products. Made from tool steel, these scissors allow you to cut in any direction. Depth – up to 1 mm, which is quite sufficient for domestic use in most cases.

Price – within 210 rubles.

"Sparta"

Products are from the “made in China” series, and this is the main reason why many people treat them with some suspicion. But in vain. All production is organized using German technology, using appropriate equipment, so these scissors have proven themselves quite well when working with thin (up to 1 mm) metal. By the way, those who have already dealt with them prefer to purchase them instead of more expensive foreign analogues.

Price – about 245 rubles.

The listed scissors are suitable for any household work with metal. They will allow the home craftsman to perform a variety of technological operations.

The cost of hand-held metal shears in the “household tools” category ranges from 65 to 1,050 rubles. If you have to cut metal quite often, it is advisable to have at least a couple of models on hand. This will not have much effect on your wallet, but in most cases there will be no problems. After all, even with minor repairs you have to cut either a metal profile or a sheet.

Source: https://ismith.ru/tools/kak-vybrat-nozhnicy-po-metallu/

Professional hand metal scissors: types, rating, best models

Metal processing operations are one of the most labor-intensive processes. High strength and toughness of the material require the use of special tools. Large enterprises use high-performance equipment.

To work at home, on a construction site, during repairs, making crafts, and household utensils, you need a mobile device. A tool with an abrasive cutting disc is not always suitable. In many cases, for technical reasons, it is better to use scissors. They guarantee a more gentle operation.

What are the criteria for choosing hand-held professional metal scissors, what should you pay attention to in order to successfully use them in the upcoming work?

Benefits of using scissors

Why do professional roofers and tinsmiths prefer to use scissors rather than a grinder? The answer lies in the peculiarities of processing sheet material, where the use of mechanical tools has undoubted advantages:

safety. Vibrations during processing with an abrasive disc can lead to its destruction. The tool can be torn out of the hands and injure the worker. The workpiece itself can be damaged;

preservation of sheet metal characteristics. Wall, ceiling panels, roofing materials have a decorative paint and varnish and anti-corrosion coating. Under the influence of high temperature, during operation of the abrasive, it burns a millimeter or more from the edge, which reduces the performance of the product;

low price of the product. Good hand-held professional metal scissors are cheaper than grinders. In addition, there is no need to regularly spend money on consumables;

autonomy and mobility. The scissors do not need a power source. You can work with them anywhere. When transporting, you don't need a lot of space;

speed of work. A professional power tool cuts faster than its electric competitor.

For large volumes of work, you can purchase manual professional hydraulic metal shears, which reduce the labor intensity of the operation. The craftsman does not need to make any physical effort to quickly and efficiently make the desired product.

Such a tool is especially valuable when high-strength steel is used. Such products are more expensive. But experts are well aware that every ruble invested in equipment pays off handsomely.

Types of scissors

The tool is used for cutting sheet material. With standard configuration scissors you can cut metal up to 1 mm. Power models with an extended lever allow you to cut sheets up to 2.5 mm. By design, the range is divided into the following types:

Direct. The shape of the blades is made in such a way that the tool does not move to the sides. Used for straight cutting of metal when straightness is important. It is impossible to make parts with complex shapes using them.

Left. The most popular modification. Below is the blade to the left of the master. Since most people are right-handed, the configuration is optimal for them. The position of the hands and body is natural. It is more convenient to make the left radius than the right one, so the cutting scheme is made taking into account this feature. Handles are marked in red.

Rights. Ideal for left-handed people. The cut part is to the right of the tool and it is easier to make the same turn with them. Often purchased for a kit, when it is intended to produce elements of complex shape. I have green hands.

With an offset center. They are often called “pelicans” for their external resemblance to this bird. During operation, the curved body of the tool is completely above the sheet and does not rest against the metal. There is no need to bend the sheet when cutting, as when using standard scissors. Marking color is yellow or green. They cost slightly more than their regular counterparts.

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The best hand-held professional metal scissors are made from forged metal. Unlike cast products, they are more durable and require sharpening less often. The cut is of better quality, without burrs or burrs.

Choosing good models

As a rule, plumbing tools are purchased for a long time. It has been used for years, so it is important not to make a mistake when choosing. It is advisable to know the characteristics of professional hand-held metal scissors. Reviews from specialists, those who actually work in this area, can be a good assistant when purchasing.

It is important to understand which models will be optimal for the intended work, what is the thickness of the metal, what shape will the parts have? The design must allow the desired operations to be performed. Professionals often have a complete set of tools. Left, right, straight scissors. A home craftsman cannot always afford this.

You can also rely on the authority of the manufacturer. For example, by purchasing hand-held professional metal scissors from well-known manufacturers, you can be sure that they will last a long time, maintaining their performance characteristics. True, such a tool will be quite expensive. Some models cost more than 10,000 rubles.

Popular manufacturers

It is not difficult to purchase a high-quality model today. The assortment in specialized salons and online stores allows you to choose the product that meets the necessary requirements.

There is no fundamental difference between domestic and foreign manufacturers in terms of performance characteristics. Today there is no longer any lag in instrument design. Thus, hand-held professional metal scissors Kraftool look no better than products under the trade name “Bison”.

In addition to the above-mentioned brands, the top sales include products from the following companies: BESSEY, 888, ERDI, Stanley, NWS, Knipex. Professional hand-held metal scissors GROSS, STAYER, LUX, Bahco are popular. Many products from these companies are considered semi-professional.

The high quality of the tool, which costs from 1,000 rubles, will allow you to perform all basic operations during repairs and construction. The most expensive models are purchased for the manufacture of complex products, when high cutting quality, accuracy and productivity are required. In most cases there are no such requirements.

Source: https://prosto-instrumenty.ru/nozhnicy-po-metallu-ruchnye-professionalnye/

Electric shears for metal - the best assistant for a tinsmith

Electric scissors make labor-intensive work with metal easier and less dangerous. With their help, you can quickly cut aluminum, cermets and galvanized sheets of such thickness that it is almost impossible to cut by hand. However, these devices have their own characteristics, which any novice tinsmith should know about.

Design features

In appearance, electric scissors are similar to a regular grinder.

The design of electric scissors includes the following elements:

Housing with an electric motor inside . It has an elongated shape, thanks to which it fits well in the palm. On models with a heavy, powerful motor, an additional handle is placed on the body for convenience. Regardless of the type and cost of the tool, the body is always made of impact-resistant plastic.
Multi-stage gearbox . Responsible for transforming the rotational movement of the motor into the reciprocating movement of the cutting head. Made of metal.
Work node . Contains the knives or die and punch needed to cut metal.
Metal shield . Protects the operator's hand from contact with the sharp edge of the workpiece.
Electrical cord for supplying power to the instrument.

The way of working with electric scissors is no different from working with conventional ones. The operator smoothly guides the cutting head along the intended cutting line from the starting point to the ending point. The main rule of work: the speed of hand movement must correspond to the speed of cutting metal.

The accuracy and precision of cutting on any electric scissors depends solely on the experience and skill of the operator.

Advantages of electric metal shears

Power tools provide the tinsmith with several advantages:

Saving physical effort - no effort is required to cut metal, the process is automated.
Possibility of cutting thick workpieces (up to 5 mm), as well as composite and polymer materials.
High labor productivity – up to 3-5 meters per minute.

Ease of working with profiled sheets - corrugated sheets, metal tiles, as well as ventilation ducts.
Cut according to a template, radial cut, arbitrary cutting configuration.
Minimal risk of injury.

Varieties

Based on the principle of the cutting mechanism, the following types of electric scissors are distinguished:

Leafy

The working unit of sheet metal shears is designed by analogy with the working unit of household shears: two knives, one of which is rigidly fixed to a support, and the other has free movement. The product falls into the gap and breaks under the pressure of the upper knife. The size of the gap can be adjusted by adjusting the scissors to work with workpieces of different thicknesses. Ideal for rough cutting of a dimensional product at its location (for example, for dismantling metal structures).

pros	Minuses
No waste.	Crinkle the edge of the sheet.
High speed.	The cut can only be made from the edge of the workpiece.
Cutting products up to 5 mm thick.
Durability of the working unit (if the cutting edge becomes dull, the upper and lower knives can be swapped and work continued).	Inconvenient for curved cuts.
Can be used as side cutters for cutting wire or nails.

Splined

Just like sheet ones, they have two knives:

The top one is static, U-shaped with two chamfers.

The lower one is movable, fitting into the groove of the upper one.

As the lower knife moves, a strip 3-5 mm wide is extruded from the metal blank. In this case, the cut edge is perfectly smooth, without burrs. Slotted shears are most popular among ventilation workers, who use them for cutting pipes and ducts.

pros	Minuses
Ability to cut sheets from anywhere.	The maximum thickness of the metal to be cut is 2 mm.
High quality cut.
No sheet deformation.	The lower knife quickly fails.
Convenience when working with workpieces of complex configurations.	Maximum turning radius.

Nibblers

Nibblers are similar in principle to a punching press, which is why they are also often called nibblers.

The main elements of their cutting head are:

Matrix . A static part in the shape of a circle or square (a circle is used for thin-sheet workpieces up to 3 mm thick, a square for thicker ones).
Punch . A movable punch made in the shape of a matrix. When the motor starts, the punch performs a back-and-forth motion, cutting out a continuous chain of holes in the workpiece, forming a cut line.

Nibblers are indispensable in car repair, roofing and ventilation work. They are perfect for cutting profile workpieces and making radial cuts.

pros	Minuses
Perform cuts of any geometry.	Conventionally straight cut (difficult to maintain an even line).
Minimum turning radius.
Lightness and mobility of the tool.
Punch through a workpiece of maximum thickness.
Possibility of cutting into the sheet from any point (from a pre-drilled hole).	A large amount of waste in the form of sharp shavings.
Good visibility of the working area.

Criterias of choice

When purchasing electric scissors, you need to pay attention to many different factors:

Power. Varies in the range of 300-650 W. A powerful tool is always better, because... it allows you to make a deeper cut. But it must be taken into account that an increase in the power characteristics of the motor is accompanied by a loss of maneuverability.
Knife stroke frequency. The higher this indicator, the more accurate the cut. However, with thick workpieces it is preferable to work at a low speed, so the best option would be a tool with a function for adjusting the speed of the knife.
Maximum metal thickness. Varies from 0.3 to 16 mm. When assessing this parameter, you should also take into account what material the scissors are intended for: soft or hard steel, aluminum, composite, etc.
Material of cutting elements. Most cutters are made from chrome-molybdenum and chrome-vanadium alloy, but the most durable blades are those made from chrome-nickel or high-carbon steel.
Maneuverability. It is inversely proportional to the turning radius of the scissors: the smaller the radius, the higher the maneuverability.
Ergonomics. The tool should be comfortable to hold with one hand. However, for processing thick metal, an additional removable handle will not be superfluous.
Launch node. The operating mode lock button must be located in an accessible place so that it can be pressed by the finger of the operating hand.

Source: https://tehno-gid.net/hand/elektronozhnitsy-po-metallu-luchshij-pomoshhnik-zhestyanshhika.html

Choosing hand scissors for metal

The clearly defined purpose of this tool does not mean a narrow scope of application. Hand scissors for metal are a universal and multifunctional device. They cannot be classified as a highly specialized professional tool. Hand metal shears are indispensable not only for many construction, repair and production work. They will come in handy more than once in everyday life!

Hand scissors for cutting metal are used in carpentry, turning, carpentry, during construction and finishing work.

Metal shears are great for cutting aluminum profiles for the construction of partitions, wall cladding and ceiling installations, for cutting corrugated sheets during roofing work, for making ventilation ducts and gutters from sheet metal.

This inexpensive and functional tool will be useful in home repairs, in the country, as well as for craftsmen and craftswomen who love handmade.

Hand-held metal shears are indispensable when cutting galvanized steel. They do not damage the zinc layer. During the cut, the zinc seems to be lubricated into the cut area and provides additional protection against corrosion.

In appearance and design, metal scissors are similar to ordinary household scissors. They also consist of two knives held together with interlocking handles. Sharpening of knife edges occurs at an angle of 65-80°. The sharper the sharpening angle, the thicker the metal your scissors can handle.

But, despite the general similarity of design, metal scissors on the market differ greatly in the shape of the blades, handles, and type of fastening. These differences determine the functionality and purpose of the tool. Greenloft.ru will help you understand the types and features of hand scissors for cutting metal.

Varieties

Scissors for straight cutting . Straight cutting or, as they are sometimes called, straight metal scissors are designed for making straight cuts. The cutting blades of such scissors have a correspondingly straight shape.

Scissors for figured cutting . Metal scissors for figured cutting are equipped with specially shaped blades, with which you can make curved and rounded cuts. The blades can be bent to the right or to the left, which determines the direction of the cut. To produce specific workpieces with particularly complex contours, manufacturers offer special finger scissors with narrowed blades.

Universal scissors. Universal (combined) metal scissors are capable of performing both straight and curved cuts. Today, universal scissors are the most popular in household use.

There are some other types of metal scissors for highly specialized purposes. Radius scissors with short blades are designed for making holes in workpieces and cutting circles of small diameter. The lower handle of the roofing shears has a special bend, which allows you to apply more force and cut thicker material.

A separate type of hand-held metal shears includes lever shears. The design of these scissors differs from standard ones. Such equipment is mounted on a workbench and has one movable and one fixed blade. The movable blade is driven by the handle. Lever shears are especially useful when working with soft metals (such as brass) and sheet steel.

Features and Specifications

Right and left scissors. This characteristic is determined by the location of the lower blade. According to GOST 7210-75, most models of metal scissors are produced with a left-handed lower blade. This tool is ideal for right-hand manipulation. If you are left-handed, you should opt for scissors with a right-handed blade. After all, during work it is extremely important that the marking line is always in sight.

Also, the location of the blade matters when making a curved cut. Right-handed scissors work well with right-handed radii, and left-handed scissors work well with left-handed ones.

Cutting thickness

You should also choose a specific model of scissors based on the thickness of the materials with which you plan to perform cutting operations. There are scissors for cutting thin sheet metals (tin, steel, copper, aluminum with a thickness of 0.3-0.8 mm).

For cutting thick metal, metal tiles, corrugated sheets, galvanized steel with a thickness of over 1 mm, a special tool with a massive working part and a reinforced structure is offered.

Keep in mind that the technical specifications usually indicate several maximum thickness values for different types of metal.

Material

The blades of most models of metal scissors are made of chrome vanadium steel. This material is extremely durable and resistant to corrosion. Sometimes you can find scissors with chromium-nickel knives and high-carbon steel blades.

Plastic is most often used to make handles. For a comfortable and reliable grip, ensuring safety and quality cutting, the handles have grooves for fingers and are covered with a non-slip coating.

Source: https://GreenLoft.ru/vibiraem-ruchnie-nozhnici-po-metallu-.html

Types of metal scissors

People who work with sheet metal know that tin snips are highly prized. With their help, you can divide workpieces into parts, cut holes, and make curved cuts. Beginners who have not worked with this tool need to know what types of scissors there are, how to choose them correctly when purchasing, and whether it is possible to make the device yourself.

Areas of application

Metal cutting shears are considered an additional tool that is used in various industries. Their main purpose is cutting metal sheets. Secondary work performed by them:

curved cuts of small radius;
separation of metal blanks;
trimming profiles when assembling a frame for drywall;
figure cutting;
cutting holes;
cutting metal tiles.

Devices are used in construction, mechanical engineering, metallurgy, and household work.

General classification

From the variety of all tools, we can distinguish certain types of metal scissors. In terms of quality, functionality, and reliability, professional and household models stand out. Based on the principle of operation, the following groups of tools are distinguished:

Hand scissors for cutting metal are mechanical tools used for various jobs. They are activated by human efforts.
Guillotine - desktop models, one part of which is fixed on the desktop, the other remains movable.
Roller - the base on which the guides are fixed, a special knife on a movable carriage. They can only be used to make straight cuts. These are large structures that require additional free space for installation and operation. Equipped with fastenings for long workpieces. The second name is disc shears.
Hydraulic - devices that are often used by rescue services to free people. During their operation, the force is evenly distributed along the entire length of the blade.
Electric - models that are driven by an electric motor. Used for cutting metal sheets and cutting holes. There are spline, punch, cut-in, sheet, and perforated.

If we talk about the design and work being carried out, we can distinguish the following groups of tools:

Straight - classic devices for cutting metal workpieces.
Figured (radius) - used for figured cutting. The design has special bends that allow you to make uneven cuts.
Universal - used to create straight, figured, curved cuts.

We must not forget about the existence of tools with an offset lower blade. They can be left-handed or right-handed. The first type of scissors has green handles, the second type has red handles. The principle of operation is that the lower blade goes to the right or left side when cutting.

https://www.youtube.com/watch?v=RmrzerobHvA

Cutting metal with curly scissors

What should you consider when choosing metal scissors?

Shears for cutting sheet metal come in different designs, sizes, and operating principles. When choosing them, you need to take into account the technical characteristics of the tool and a number of third-party factors:

The location of the blades, the presence of additional bends. The shape of the cut will depend on this.
Cutting edge capabilities. This parameter is selected depending on the thickness of the sheets you will have to work with.
Comfort at work. It is important to hold the device with your hands, try to make cutting movements without workpieces, to understand how convenient the tool is.
Operating principle. Depending on the budget, you can purchase a manual mechanism, hydraulic, or electric.

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Source: https://metalloy.ru/obrabotka/rezka/nozhnitsy-po-metallu

In construction and everyday life, a tool such as metal scissors may always be needed. This equipment does not have complex elements and can be used for cutting various metal alloys. Depending on the density of the elements being cut and the scale of the work, the tools have various modifications, which allows you to choose the type that is suitable for certain tasks.

What are metal scissors and what are they for?

Most of the modifications available today have a similar structure. This tool is for the most part similar to ordinary stationery or tailor's scissors.

Manual models predominate on the market. They do not take up much space and allow you to cut a metal profile of small thickness in a short time.

The quality of cutting in such products depends on the cutter itself. They stand out from the general type as straight-cutting scissors and scissors for figured cutting. The handles of such products are usually made of thick rubberized plastic to protect your hands while working. For reliable fixation, a protective spring is installed on the back side of the cutter, which, in the event of a sudden breakdown, reduces the compression speed of the cutting blades.

What types of metal scissors are there and what are they for?

Manual metal shears Electric shears Bosh cordless shears

The entire range of professional tools on the market in the form of metal scissors can be divided into the following 3 large groups:

manual;
electrical;
battery-powered

Each of the presented groups of tools has certain technical features. Depending on this type, they are able to carry out cutting operations not only on thin metal profiles, but also on denser and thicker alloys, up to reinforcement.

Hand scissors for metal

Hand scissors are the simplest type of tools. Such devices are not complicated by additional mechanical or electrical elements. They are quite compact and do not take up much space.

Products of this type are divided into 3 groups:

for cutting holes;
straight cutting;
for shape cutting.

An important characteristic that distinguishes this type from the other is the shape of the cutting blades. Depending on their shape, they are able to perform certain tasks from different angles and directions.

Electrical

Electro-hydraulic rebar shears

Such equipment is used for faster cutting of corrugated, profile and other metals. What distinguishes this product from manual ones is the presence of an electric motor. With its help, no physical effort is required to carry out the necessary operation with metal.

Electric cutters can be divided into the following groups:

Leaf cutouts. Such tools are used for cutting sheet metal. Cutting is done using 2 blades. Through reverse translational movements, the cutters accurately cut the metal in the required direction at high speed;
Splined. They have two cutting elements. The upper one, in the form of a movable blade, makes translational movements, cutting a groove up and down. The lower incisor is supporting and motionless. During the cutting process, such equipment does not leave nicks;
Die cut die cut. Often used for dismantling small metal parts and structures. Using a hammer-type punch, such a device pierces the material at high speed. This cutting leaves an uneven cut several millimeters wide;
Reinforcement. Such cutters provide quick cutting of rod reinforcement and rods made of various steels. Most often, such products are used in construction and in various repair shops. An electric motor creates the necessary pressure on the area with cutters, which quickly bite through the material, leaving an uneven mark.

Rechargeable

Cordless shears are also used for cutting and chopping various types of metals. And the distinguishing feature is the presence of a lithium-ion battery. It is this that ensures the autonomy of the device, providing energy to work for up to 4-5 hours without recharging.

Such scissors can be divided into the following 3 groups:

splined;
cutting;
leafy.

In terms of structure and principle of operation, such groups are no different from those discussed above. The only thing that distinguishes them is the presence of rechargeable batteries.

What materials are electric scissors designed for?

Electric types of tools are most often used for the following materials:

metallic profile;
sheet metal;
plastic;
various types of roofing material;
fittings of various diameters.

Such equipment can be used for cutting other metal elements. A distinctive feature of electrical devices is their motor, which provides enough power to cut objects of various thicknesses.

What is the advantage of electric scissors over manual scissors?

The advantage is the electric motor. It can be used to cut even dense metal products.

Unlike hand scissors, the owner does not have to use physical force to apply the necessary pressure on the cutting elements, which also affects the cutting speed.

Difference between sheet metal and metal cutting shears

Nibblers "Bosch"

The main difference between groups of such tools is the type of cutting. Sheet metal cutting tools cut through the sheet using a saw-like motion. They contain two movable cutters with special teeth.

Nibblers use a chipping type of sheet division. A special cutter hits the blade at high speed, leaving a hole up to several millimeters in diameter. This method makes it possible to cut material of greater thickness and density.

Difference between hydraulic cutter and electric shears

A hydraulic cutter is used to cut thick metal rods and cables. The device uses a manual cutting type. By applying hydraulic pressure through pressing the handles, the cutters located at the edges begin to compress the object until it is completely broken.

Electric scissors, unlike cutters, do not require physical intervention from the owner. The engine creates the necessary pressure of the cutters on the element and makes cutting faster and more accurately.

Which scissors are best to use for working with corrugated sheets and metal tiles?

Spline and sheet tools will do an excellent job with various types of corrugated sheets and metal tiles. The electric motor will provide fast and accurate cutting in the required direction.

Hand scissors are also convenient for small amounts of cutting. If you need to process a small area, such tools will be excellent assistants in your work.

Tips: How to make a straight cut line

In order to make more even cuts on metal or other material, you must first draw a straight line along this object.

This will make it convenient to guide the cutting element itself. If hand scissors are used, then it is advisable to keep the blade perpendicular while cutting the line itself. If you are using electric shears, then you can place a small cutting guide next to the cutter.

What to look for when choosing

When deciding on the choice of scissors for cutting metal, you need to know what kind of alloy is used and what its thickness will be. Not all handmade products can handle thick sheets.

It is necessary to decide on the tasks at hand, whether regular cutting or shaped cutting is required. If you need an electric tool, then you should pay attention to its power and the type of cutters. Most of the models presented have replaceable cutters.

This allows you to select scissors for a specific type of metal. The last thing to consider when choosing a product is its power. Electric motors also vary in number of revolutions. The more complex the cutting, the higher the power required.

Compliance with safety rules when working with tools

When cutting, you should always wear special construction glasses. They will protect your eyes and the area around them from possible small chips.

Also, when carrying out such work, it is necessary to wear cotton gloves to prevent the tool from slipping out of your hands. During the cutting process itself, it is strongly recommended not to place your hands or feet nearby, as an awkward movement can cause serious injury to the cutter.

Each of the types of cutting tools discussed in the article is designed for specific tasks. When choosing, you should always pay attention to the characteristics of such equipment. When working, always follow the established rules and safety precautions to protect yourself and anyone nearby from possible injury.

Source: https://shabashka-pro.ru/kak-vybrat-nozhnicy-po-metallu

Features of professional metal scissors: types, differences, selection criteria

Not only a professional, but also an ordinary person should have metal scissors in their arsenal. After all, you never know when this tool might come in handy. This equipment can easily handle any metal alloys .

But if you want the most effective work with metal shears, you should know that depending on the density of the elements, as well as the scale of the work, you should use a tool suitable for such tasks.

That is why you need to consciously approach the choice of this device.

If we look at the range of this tool presented in stores, we can note that many models have a similar device. In their design, they resemble ordinary stationery or tailor's scissors.

However, in stores you can most often find manual models.

This is the most popular option today, it does not require much space, and on top of that, with the help of such a device you can very quickly cut a metal profile of small thickness.

Manual metal shears may differ from each other in the quality of cutting, which is determined by the design of the cutter. Depending on its type, there are straight cutting scissors and those for shaped cutting.

For tools of this type, the handles are made of dense rubberized plastic, which reliably protects the master’s hands while working. To ensure reliable fixation of the tool during cutting, a protective spring is located on the back side of the cutter.

It is necessary in case of a sudden breakdown and instantly reduces the compression speed of the cutting blades.

Types of instruments

Despite the fact that stores offer a large number of varieties of metal cutters, all their diversity can be represented in the form of three main groups:

Manual.
Electrical.
Rechargeable.

Tools belonging to each of the above groups differ from each other in certain technical and operational characteristics. The tasks that can be performed with their help directly depend on this Some are effective for cutting thin metal profiles, while others can easily cope with denser and thicker alloys, up to reinforcement.

Electrical modifications

Typically, this tool is used in cases where it is necessary to quickly cut corrugated, profile or other metals. These models use an electric motor instead of a manual mechanism. Thanks to him, the master does not have to make physical efforts to perform this or that operation with metal.

The entire variety of electric cutters can be represented in the following groups:

Leaf cut . The main purpose of this type of tool is cutting sheet metal. Two blades take part in the cutting process. By making a back-and-forth movement, the cutters allow you to quite accurately cut metal in the desired direction and at high speed.
Splined . The design of such scissors has two cutting elements. The upper one, which is made in the form of a movable blade, makes translational movements, creating grooves. The lower incisor acts as a fixed support. The main advantage of such a tool is that when cutting metal, no nicks are formed.
Die cut die cut . This type is mainly used for dismantling small metal parts and structures. The cutting process takes place with the direct participation of a punch, with the use of which the scissors, acting like a chipper, pierce the material at high speed. As a result of this processing, an uneven cut is formed, reaching a width of 1-2 mm.
Reinforcement . Using cutters of this type, you can cut rod reinforcement, as well as steel rods, in a minimum amount of time. These cutters are most widespread in construction and repair shops. The electric drive installed in them provides a certain pressure on the area with the cutters, which bite through the material in a short time, leaving behind an uneven mark.

Electric cutters are most widely used when cutting the following materials:

metallic profile;
sheet metal;
plastic;
various types of roofing material;
fittings of various diameters.

Additionally, this tool can be used for cutting other metal elements. They also have one more feature - the presence of a fairly powerful engine, which allows them to cut objects of different thicknesses.

Advantages over the manual type are the presence of an electric drive. It allows them to cut even dense metal products. When using electric scissors, the master does not need to exert physical effort to create the necessary pressure on the cutting tool. This, in turn, determines the speed of metal cutting.

Cordless cutters

In terms of purpose, this type of cutter does not differ from the previous one and is used for cutting and chopping various metals. But unlike electric cutters, these devices use a lithium-ion battery . Thanks to its presence, the scissors can work in autonomous mode without recharging for 4-5 hours.

Cordless shears can be classified into several groups:

splined;
cutting;
leafy.

In terms of design and operating principle, these scissors are completely identical to the modifications discussed above. They differ from them only in that here batteries act as a power source.

Sheet shears and nibblers differ from each other primarily in the type of cutting they can perform.

With the help of sheet cutters, you can easily cut through a sheet by making translational movements with the blades like a saw. This task in this tool is performed by two movable cutters equipped with special teeth.

As for the cutting shears, they work on the principle of a jackhammer. Moving along the canvas at high speed, a special cutter strikes it, resulting in holes with a diameter of up to 3 mm. Thanks to the use of this method, this tool can be used to cut materials of great thickness and density .

The main purpose of hydraulic shears is to cut thick steel bars and cables. They work on the same principle as hand scissors. When the master presses on the handles, hydraulic pressure is created by pumping, after which the cutters located at the edges compress the object until it is completely broken.

When working with electric scissors, the master does not need to apply physical force to create pressure. This task is performed by the engine, which makes it possible not only to cut products much faster, but also more accurately.

Working with corrugated sheets and metal tiles

If you have to make blanks from corrugated sheets and metal tiles, we recommend using slotted and sheet tools. Thanks to the electric drive installed in them, you can quickly and very accurately cut metal in the direction you need.

At the same time, you can also use manual professional metal scissors if you need to cut a small amount of material. They will do the job perfectly if you need to cover a small area.

To make cuts on metal or other processed material smooth, experts advise first of all to apply a straight line to the object. It will serve as a guide for you to guide the cutting element . If you are going to work with hand scissors, then the blade must be held strictly at right angles to the drawn line. When working with electric scissors, you can place a small cutting guide near the cutter.

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Tool selection criteria

To choose the right metal scissors for your task, you must first find out the type of alloy you will be working with and its thickness. There are not many hand scissors that can cut thick sheets.

You also need to decide on the type of tasks to be performed: whether you will perform regular or figured cutting. If you decide to purchase electric cutters, we advise you to pay attention to the power and type of cutters when choosing them. Many models of such tools are most often equipped with replaceable cutters. This way you can find a tool suitable for processing a certain type of metal .

The last parameter to consider when choosing metal cutting shears is power. Scissors may differ in the number of revolutions of the electric motor. For more complex cutting, it is recommended to purchase a more powerful unit.

Compliance with safety rules at work

Before you start cutting metal, you should prepare special clothing to protect the most vulnerable parts of your body. Under no circumstances start work without special construction glasses. They will help protect your eyes and the area around them from small chips.

You should also have cotton gloves to help prevent the scissors from slipping from your hands while working. Try to keep your hands and feet away from the tool while cutting. Otherwise, if you move awkwardly, you may injure yourself on the incisor.

Metal cutting is a rather complex and traumatic job, for which you need to properly prepare. First of all, the master must choose a suitable tool for himself, which should be not only convenient, but also safe to use.

Despite the fact that hand scissors are the most primitive version of such a tool, you should not give them up.

If you have to work with a small volume of metal products that are thin and made of low-density alloys, then such a tool is ideal for this task.

It's a different matter when you need a tool to cut stronger metals. In this case, you should think about purchasing scissors equipped with an electric or battery drive. Be sure to consider whether the tool can be connected to a power source. If you have problems with this, it is better to purchase a model that runs on rechargeable batteries: they are more convenient and will allow you to get the job done quickly and efficiently.

Don't forget about safety rules . Do not stand too close to the operating tool, otherwise you may be seriously injured. And under no circumstances start cutting metal products without special clothing. Remember that this is a dangerous tool that can cause harm to health even if safety precautions are strictly followed.

Source: https://tokar.guru/instrumenty/vybor-professionalnyh-nozhnic-po-metallu.html

Metal shears - what they are, device, what they are used for, main types of tools

Working with metal is very labor intensive. To process this material, mechanization is needed. Metal shears are used to cut steel sheets. There are many types of this equipment. For effective use, it is important to know their main characteristics.

What are metal scissors?

This device is designed to cut metal sheets and reinforcement. Scissors for cutting metal can be manual or mechanical with various types of drive. Compared to other methods (cutting wheel or gas cutter), this method of cutting sheet metal has a number of advantages:

Relatively cheap. The product itself is lower in cost than alternative cutting tools (angle grinder, gas cutter). There is no need to buy consumables (cutting wheels, gas cylinders).
Preservation of material characteristics at the cutting site. At the point of contact of the cutting tool with the metal, the temperature remains unchanged. This allows you to preserve the properties of the material when working with it.
The cutting speed is higher.
Easy to use. Cutting with metal scissors does not require special skills or permission to work (as is the case with a gas cutter). The equipment does not require special maintenance.
The manual type of this tool does not need to be connected to an electrical outlet. It is compact and mobile.

Metal scissors device

The principle of operation is based on obtaining two pieces from one by shifting layers of material until complete separation (cutting). Mechanical metal shears have a device consisting of blades connected by a hinge on an axis of rotation.

The cutting edges are sharpened at an angle of approximately 70° to the cutting plane. The cutting zone, depending on the type of scissors, can be located behind the blade mounting axis (regular) or in front of it (lever).

The design may provide for mounting to the frame to facilitate operation.

The industrial version has a device with separate knives based on the guillotine principle. One working element is fixedly fixed on the frame, the other is lowered from above along guide planes and cuts the metal. The next type of scissors may include an eccentric that is connected to one of the knives. As it rotates, it imparts reciprocating motion to the cutter. The second knife remains motionless. The disc shear device has two rotating cutting circles.

What are metal scissors used for?

The range of equipment operation is wide. Sheet metal shears are one use. Other applications:

In mechanical engineering. Includes the production of flat rectangular blanks, shaped parts with curved sides and with die-cut holes.
In construction. Manufacturing of parts for roofing and cutting of metal embedded parts for concrete work.
At metal yards for cutting rolled metal to meet the needs of consumers.
In the emergency services. Cutting round and rectangular reinforcement when clearing debris.
When dismantling and recycling old equipment and cutting up scrap metal.
At home. The use of metal shears ensures that the needs for minor repairs of metal structures and country house construction are met.

Mechanical metal shears

The cutting force is transmitted by the worker's hands. Hand-held professional metal scissors have forged parts. This increases the service life of the tool. The cutting edge is smoother without burrs. Sharpening is done less frequently than regular specimens. Another difference is the additional hinge. You can cut thicker metal with less effort.

There are several types of execution:

Regular . They resemble scissors for cutting paper, only larger in size and more massive.
Lever . Cutting is done using a lever on which the knives are mounted. The second arm is rigidly attached to the frame.
Roofing . Another name is chairs. The lower part is fixed (the sharp curved end is driven into the block). This gives rigidity to the structure and makes work easier.
Manual guillotine metal shears. The cutting knife is fed onto the workpiece using a lever system from above. The second cutter is stationary.

Electric metal shears

The electric drive greatly simplifies the work. The answer to the question of which metal scissors are better depends on the size of the job. For significant production volumes, electrical samples are preferred. According to the principle of making a cut, they are distinguished:

Leafy . The cutting organs are two sharpened plates, one of which is movable.
Disk . Here cutting is done using rotating circles. They can be used as an attachment for an electric drill or grinder.
Splined . The design has a fixed U-shaped slot and a cutter that goes into it. The chips generated during cutting are cut off with pliers.

Cordless metal shears

This version of the tool from well-known companies is compact and has high performance. For example, metal shears for corrugated sheets can produce straight and curved cuts four times faster than manual ones with minimal effort. A 12-volt battery charge is enough to cut about 60 m of material. The scissors are equipped with an electrical capacity level indicator.

Types of metal scissors

There are several varieties for different production needs:

Manual . They are used in everyday life and at small-scale production sites.
Guillotine metal shears with drive . Large-sized equipment on a stationary basis, designed for large production, cuts metal up to 25 mm thick.
Combined press shears . They are workshop equipment. They are multifunctional, as they are capable of not only cutting sheet and profile metal products, but also cutting out holes.
Nibblers . They are produced for household needs with electric drive and stationary types for large-scale production. The working body consists of a cutting punch and a matrix. They are good for use on corrugated surfaces. Metal nibblers can perform both straight and curved cuts in sheet metal. The minimum diameter of the circle is 50 mm.

Another name is leafy. Can only cut material in a straight line. Metal scissors of this design have straight blades. This prevents the cutting line from moving to the sides.

There are options with a displacement of the axis of fastening of the hinge on which the knives are fixed. Long length slitting can be done. In ordinary scissors, the edge of the cut part rests on the tool. You have to bend it back to continue cutting.

With an offset fastening, the cutting line passes by. Cutting is carried out without delay.

Radius metal shears

Such models have rounded blades on the right or left side. The best metal scissors of this design are designed for cutting in a curved configuration or in a circle. Blue handles indicate that the bend was made to the left, red - to the right. With this tool you can make holes anywhere on the sheet by first drilling a hole.

Combined metal scissors

They are also called ideal. Universal metal scissors have blades that bend upward. They are used to make straight and curved cuts, cutting holes in the center of the sheet surface. There are left and right. The first ones cut to the left. For them, the lower half is on the left, and for those on the right, it’s the other way around. For ease of recognition, the handles on the left are painted red. The second scissors have a green color.

How to choose metal scissors?

This tool has a long service life. For this reason, when purchasing, you need to consider the following points:

Type of material to be cut: metal grade, thickness, sheet condition.
What kind of cutting needs to be done: straight, curved (you need cutting shears for metal) or cutting holes.
In case of curved cuts, it is necessary to select scissors that correspond to the cutting direction (left or right).
Swivel type.
The quality of workmanship and the type of metal from which the cutting parts of the tool are made. High-quality carbide steel holds an edge better and lasts longer.
When purchasing electric shears, you should consider the motor power. Low-power shears may not cut through thick metal, or the power tool will malfunction.
It is preferable to purchase metal scissors with a large battery capacity.

Metal scissors - rating

A sample list of the best tools, according to users and experts, is as follows:

Metal scissors Kraftool . The cutting part is made of chromium-molybdenum alloy and ensures good sharpening.
Hazet brand tool 1961R-1 . Made from two grades of steel. Performs all types of cuts.
Pelican scissors or NVS 070-12-350 . The bird-like shape makes cutting easy.
Gross cutting tools . “Piranha” has a knife hardness of up to 60 units.

How to cut metal with scissors?

To perform this operation correctly, a number of conditions must be met:

On the piece of material being processed, use a pencil (or a sharply sharpened “scriber”) to draw the required cutting line.
Sheet metal shears are placed in the working hand. Carefully align the edges of the cutting planes of the tool with the beginning of the cutting line. After making sure that the scissors are located exactly on the mark, press the handles.
After squeezing the handles of the tool and cutting through the metal, you need to slightly squeeze out the piece of material being cut, pushing the tool down. This will make further cutting easier. If the work is done with scissors with an offset connecting joint, this is not necessary. The cut piece will not interfere with your work.
The metal scissors are pushed further along the line and the next cut is made, squeezing the handles. This sequence should be repeated until the piece of metal is completely cut off. It is not recommended to push the tool far. This will make cutting more difficult due to increased force. Short cuts will speed up the work.
Burrs on the edges of the cut parts are cleaned with a file. Distortions along the plane are leveled by straightening with a mallet.
It is recommended to carry out the work in protective gloves so as not to injure your hands on sharp edges and jagged metal.

Sharpening scissors for metal

Every cutting tool becomes dull. The problem that has arisen, how to sharpen metal scissors, can be solved with the help of a thick needle or sharpening tool. The first method is simple. You need to “cut” the needle several times. It will glide over the blades and sharpen them. This sharpening will help for a short time. The second method consists of several steps:

Disassemble the scissors.
Secure one blade in a vice with the cutting edge facing away from you.
Using a sharpening file, sharpen along the plane until the nicks are completely removed.
Sharpen the second half.
Lubricate metal scissors.
Assemble the tool.

Source: https://womanadvice.ru/nozhnicy-po-metallu-chto-eto-takoe-ustroystvo-dlya-chego-ispolzuetsya-osnovnye-tipy-instrumenta

How to choose hand-held metal scissors

Tin shears are widely used for cutting steel sheets of different thicknesses. With their help, workpieces with high linear dimensional accuracy are obtained. Since the processing occurs in a cold way, overheating of the edge and the formation of scale are eliminated.

There is a huge variety of scissors - from powerful stationary equipment to lightweight and mobile hand tools. When choosing, you need to take into account the specifics of the application, the intensity of operation and the nature of the tasks. No one will purchase a hydraulic guillotine for household work, while even the best manual model will not cope with the production load of a metalworking plant.

When choosing, the following factors are important:

maximum dimensions of the metal being cut (thickness, width);

nature of processing (straightforward, curvilinear);

material for making knives (these must be hard tool alloys);

electric motor power (if available);

functionality, ability to adjust cutting depth, technical characteristics.

Manual for household use.

They are used exclusively for cutting thin sheet metal, most often tin, sometimes wire. Externally similar to ordinary scissors. They are driven by human muscular power and can be used for both straight and curved cutting. There are different designs of scissors on the market, which differ in the shape of the cutting edges and other parameters.

Guillotine.

High-performance stationary equipment used in industrial workshops and repair shops for straight cutting. With its help, even thick metal (up to 25 mm) can be successfully chopped. The required gap is set, the sheet is placed under special clamps.

Two knives (one movable, the other not) interlock, resulting in a high-quality cut across the entire width.
There are both electric and lever (manual) models that operate autonomously. Nibblers. Serve for complex figured cutting. Create a smooth and clean cutting line without deformation or chips.

They are characterized by high maneuverability and a minimal turning radius. The working area is clearly visible; you can even start cutting from the middle of the sheet.

Combined press shears.

Convenient, multifunctional, productive.
They can work not only with sheet metal, but also with rolled profiles. In addition, they are used to make cuttings in blanks. Additional information on the topic:

High-quality metal scissors at the best prices

Source: https://steelfactoryrus.com/kak-vybrat-nozhnitsy-po-metallu-ruchnye/