How to cut a circle from metal with a grinder

How to Cut a Circle in Metal with a Grinder - Basing

How to cut a circle in metal: best methods and valuable tips

Any design, for example in your home, in production, involves working with metal.

Often, during the operation of this material, the question may arise: how to cut a circle in metal?

It deserves attention, since the complexity of the process of performing the work and the quality of its result directly depends on the choice of the right tool and technology.

Methods for cutting a circle from thin metal

Metal circles

Metal can be thin, as it is also called thick, but not durable; a variety of tools are used for cutting it.

The choice of materials and cutting technology also depends on how correctly you can choose the studio, what diameter the circle and how even it must be.

Using a jigsaw

If you need a perfectly even circle, use an electric jigsaw to cut it out.

The work is carried out in stages:

• First, the thickness of the metal is determined and the appropriate saw blade for the electric jigsaw is not selected.
• Well before cutting a circle in metal with a jigsaw, the outline of the circle that will be cut is outlined on the working plane.
• Using a drill, not a drill (with a diameter of eight to ten millimeters), a hole is cut out from which work begins.
• A jigsaw saw blade is placed into the resulting gap and cutting continues according to the intended drawing.

Cutting with application does not take a long period of effort. In addition, using a jigsaw you will get a circle with perfect edges. Alas, this tool is used only for metal of minimal or medium thickness (nettle two - three mm).

Using an angle grinder

The grinder is used when working with thin metal. There is an option to create a round hole with this tool by following these step-by-step tips:

• Well before cutting a circle in the metal with a grinder , markings are made so that its contours are clearly visible.
• Short sections are cut along the entire length of the intended drawing, which will eventually be connected.
• The figure will be more like a polyhedron than a circle. Therefore, after cutting is completed, the product is processed and not cleaned until the edges are sufficiently even and smooth. For processing there is also the option of using a grinder. If the circle has a wide diameter, of course, grind the contours with a large disk.

How to cut a circle with a grinder part 1

How to cut in a circle with a grinder , without any tools. Photo in mine:.

When processing a cut circle using a grinder, you should be careful that the disk is inside the hole and, despite this, is located in the same plane with the work sheet.

Cutting a circle in thick metal

Cutting a circle with a grinder

In order to outline the exact contours of the figure that will be cut out of metal, you should use a ruler, a marking compass, or a marker.

First, using a ruler, the required width of the compass connector is set so that it matches the required diameter of the circle.

Then the center point of the circle is determined on the metal plane.

Contours are drawn from it using a compass.

To make them clearly visible in robots, they should be drawn with a marker.

Application of cutting torch

Of course, cut a circle into medium-thick metal using a gas cutter. The work is carried out in stages:

• The outline of the circle is outlined.
• The instrument burner lights up.
• The combustion torch is adjustable.
• The torch is carefully and slowly drawn according to the drawn drawing.

Using this method, you can cut a hole in metal that is about four or five millimeters wide.

Application of welding machine

If you don’t have a gas cutter at home, use a welding machine.

Source: http://xn--80aabfqjhc8bhv.xn--p1ai/2019/06/06/kak-bolgarkoj-vyrezat-krug-v-metalle/

How to hold a grinder correctly when cutting metal

The grinder is an indispensable tool in construction and installation work. Knowing how to safely work with an angle grinder and following the rules for using the tool, you can avoid injuries.

Bulgarian – Photo 01

   A grinder (angle grinder or angle grinder) is one of the most dangerous hand tools. Reasons for this:

• high rotation speed (more than 10 thousand revolutions per minute),
• lack of all-round protection of the cutting disc with a casing (quite a large part of it is open),
• lack of possibility of rigid fastening of the tool.

The main dangers when handling an angle grinder are the inability to hold the tool, flying fragments when the disks jam or break, and streams of hot abrasive particles.

Working with an angle grinder – Photo 02

The likelihood of getting injured at any time is high, but knowing how to work with an angle grinder correctly and following these rules, any woman can successfully handle an angle grinder.

Protective means

   When cutting various materials with a grinder, to protect the body and respiratory organs you will need:

• goggles or a protective mask that protects the eyes on three sides,
• clothing that should not hang loosely, so as not to be caught in the rotating mechanism,
• shoes are stable, with flat soles,
• Thick gloves, preferably leather,
• a respirator for respiratory protection if the grinder is used for cutting stone, porcelain stoneware, ceramic or glass tiles.

When working with an angle grinder, protection is necessary - Photo 03

Checking the serviceability and readiness of the tool

Before working with an angle grinder , you should always first check the serviceability of the tool:

• correct installation and secure fastening of the protective casing. It must be securely fastened and installed so that sparks and pieces of the material being cut do not fly towards the operator;
• integrity of the cutting disc, absence of defects on it. Any defect can cause injury. If there are breaks, chips, or cracks on the cutting blade, it must be replaced with a new one. You should not save on disks by buying cheap Chinese counterfeits; it is better to purchase brands from reliable manufacturers: Kronomax, BOSH, LugaAbrasiv;
• uniform rotation at idle speed at maximum spindle speed for 0.5–1 minute. There should not be strong vibrations.

Components of the tool - Photo 04

Protecting surrounding surfaces from damage and fire

If the tool is used indoors for cutting water pipes, plastic or finishing materials, before using a grinder , flammable objects, adjacent walls and floors should be protected from sparks with a thick damp cloth or asbestos cloth.

Using a special disk for each type of work

   The most common injuries that operators experience when using an angle grinder are when the blade breaks into pieces or breaks off the spindle. Parts of it can fly out at great speed along an unpredictable trajectory.

Dangerous sectors when a disk is destroyed - Photo 05

Professionals who know how to safely work with an angle grinder pay great attention to the choice of working discs. Each of them indicates the purpose of use.

• Discs should be used strictly for their intended purpose. Depending on the purpose of the cutting blade used, select the number of revolutions. When cutting tiles or porcelain stoneware with a metal disc, material chips heated above 600°C will fly in different directions. The same thing will happen if you cut tiles at a number of revolutions per minute exceeding 3 thousand. If you cut iron with a diamond blade, the tool can be torn out of your hands.
• Do not use a grinder when working with wood, even if it saves time. When cutting plywood, as a result of overheating, toxic fumes of resins will be released, and if the cutting blade gets into contact with a wood knot, the machine will be torn out of your hands.
• Do not place cutting elements of a circular saw on the angle grinder, even if they fit perfectly.
• Do not sharpen metal with the side surface of the disc. This will cause damage and injury to the operator.

Correct position of cut parts of materials

Before working with an angle grinder , you need to prepare the place and pay special attention to possible interference.

Working with an angle grinder – Photo 06

• When cutting metal, you should remember that, unlike wood, it practically does not break until the end of the cut.
• The cut should always be carried out in the direction of rotation of the disk to break the parts, and not to compress them.
• It is dangerous to saw through metal that is secured at its ends to two supports. At the end of the cut, the tool will clamp and be torn out of your hands.
• Care should be taken to ensure that there are no distortions and that the cutting plane does not change during operation.
• There is no need to put pressure on the tool when cutting. If work progresses slowly, the cutting element should be replaced.

Reasons for the rebound of the angle grinder - Photo 07

Attentiveness and composure at work

Every little detail is important when using an angle grinder, so the recommendations on how to properly work with an angle grinder should be strictly followed.

• If there is a stone or other hard object under the material being cut that could get caught under the blade, there will be a strong jerk, the machine will break down, or the operator will be injured. Therefore, you need to exclude such possibilities and be very careful.
• When making cuts in concrete walls, it is recommended to first make sure that there are no reinforcement, hidden pipelines, or electrical wires at the cut site. This can be done with a metal detector and electric detectors.

Caution when working with an angle grinder - Photo 08

Correct tool position

• The grinder should always be held with both hands.
• The body position must be very stable in order to hold the instrument during impact.
• When cutting, the cutting line should be to the side, so that if the tool jams, it will move to the side of the operator rather than towards him.

Correct position of the tool when working - Photo 09

Correct start, stop, breaks

Knowing how to safely operate an angle grinder , starting and stopping the machine should also be done correctly:

• Start the angle grinder only when the disk is in a free position;
• Only a blade rotating at operating speed can be inserted into a cut. Do not let go of the machine until rotation has completely stopped. You can stop the rotation, for example, against a tree. You should not place a grinder with a rotating working disk on the floor or ground;
• you can change the workplace when the machine is completely stopped;
• When fixing the cutting element in the machine, do not overtighten the mounting nut with a wrench. It is enough to pull it together with the disk by hand;
• When cutting, you should take breaks in accordance with the manufacturer's recommendations.

Working with an angle grinder - Photo 10

Working with an angle grinder significantly reduces the time required for repair and installation work. By following the manufacturer's recommendations on how to properly work with a specific brand of angle grinder and instructions on how to safely work with power tools, everyone can protect themselves from possible injuries.

Source: http://ooo-asteko.ru/kak-pravilno-derzhat-bolgarku-pri-rezke-metalla/

How to cut an even circle from metal

How to cut a circle in metal: best methods and valuable tips

Any design, for example in your home, in production, involves working with metal.

Often, during the operation of this material, the question may arise: how to cut a circle in metal?

It deserves attention, since the complexity of the process of performing the work and the quality of its result directly depends on the choice of the right tool and technology.

How to cut a hole in large diameter metal? — Machine tools, welding, metalworking

Any design, whether in your home or in production, involves working with metal.

Often, during the operation of this material, the question may arise: how to cut a circle in metal?

It deserves attention, since the labor intensity of the work process and the quality of its result directly depend on the choice of the right tool and technology.

How to properly cut various materials with a grinder

An angle grinder, which everyone calls an angle grinder, can not only grind, but also cut various materials using special wheels. But in order to skillfully use these opportunities, you must have knowledge and experience.

https://www.youtube.com/watch?v=yNYDu6XSIAw

Many people have an angle grinder, but most people do not know how to use it correctly and how to hold it. This leads not only to work failure, but also to serious injuries. An angle grinder is a rather dangerous power tool.

The circle should be installed with the pattern facing up and clamped with a special nut.

The person with the leading right hand holds the grinder by the handle with his right hand. In this case, the circle should be located on the left side of the machine, and the protective cover should cover it on top. The rotation occurs in such a way that during cutting, sparks fly towards the worker. If the grinder's circle jams and the grinder breaks out of your hands, then it will not go towards the carver, but in the opposite direction.

The left hand holds the machine by the handle, which is screwed into a threaded hole on the body. There are several of them for special cases of use, but the correct position of the handle is only the upper one.

This position of the machine requires the use of protective equipment. To protect the eyes and the exposed part of the face, use safety glasses, or even better, a protective mask. To protect exposed parts of the body from sparks and small fragments during the cutting process, it is necessary to wear a suit made of thick material.

How to cut smoothly

To cut something evenly with a grinder, you need to make the correct markings. For example, before cutting a piece of pipe, you need to mark the size with a marker or thin chalk. Then we take a sheet of paper with a straight edge and wrap the pipe around the mark. We will get a paper pipe on top of a metal one. The border of the paper will be the exact trajectory along which part of the pipe will be cut off.

For these purposes, you can also use construction tape, which makes it easier to wrap the pipe and secure it. Draw a cutting line along the edge of the paper or tape. We remove the paper, heal the pipe in a vice and cut it with a grinder.

You can cut a corner, profile or sheet in a similar way. Just don’t forget that you can’t change the position of the machine while cutting. Misalignment of the circle will lead to jamming or breakage. Do not press too hard on the circle, especially thin ones. The deformation will immediately be reflected by curvature. The machine should eat into the material itself, you just need to hold it.

The evenness of the cut also depends on the correct selection of the wheel. It is difficult to achieve an even trajectory when cutting off part of a thick-walled pipe with a thin circle.

How to cut a circle with a grinder

Sometimes it is necessary to cut a circle on a sheet of metal, but there is no tool other than a grinder. To do this, mark a circle on the selected area with a white marker or thin chalk. The cutting line should be on the outside of the circle so as not to reduce it.

We install the grinder not perpendicular to the sheet, but at an angle. Moreover, the grinder will lean towards the center of the circle. At low speed we make a preliminary contour cut. Both the contour and main cuts must be performed with short movements, moving the position of the circle along the contour.

You can do the same when working with other materials. To cut a circle in a tile for a pipe using a grinder, you need to make a mark on the back side of the tile. Then take a grinder and make slots along the chord inside the marked circle at a distance of 4-5 mm from one another.

Then the tile is turned at a right angle, and slots are made perpendicular to the previous ones. During cutting, pieces of tile will crumble, but within the outlined circle. The remaining teeth can be sanded with a grinder, first from the front side.

Naturally, the cut will be oblique, with an extension to the back side. But this edge can be gradually grabbed with pliers and chipped away. At the end of the operation, the back side of the hole is sanded. This will require accuracy, attention and patience.

How to cut tiles and porcelain stoneware with a grinder without chipping

To avoid chipping when cutting tiles, it must be moistened with water. This will promptly reduce the temperature, which causes destruction. In this way, you can not only cut the tiles, but also cut out the necessary fragments. Another method is to use a stone cutting wheel. This circle does not crack or chip.

The situation with porcelain stoneware is a little more complicated. Porcelain tiles are somewhat thicker than regular tiles and are stronger. A manual tile cutter becomes dull very quickly without achieving results. Therefore, you can cut porcelain stoneware around the stone.

We make a contour cut along the drawn cutting line. Then another, a third. Until the uncut thickness of the material is less than the cut thickness. We move the porcelain tile to the edge of the table and break it with a sharp, but not very strong movement.

How to saw without dust

Any dust is harmful to human health. During renovation or construction, it settles everywhere. Cleaning it up afterwards takes a long time and is quite difficult. But the main thing is that it cannot be removed from the body. In order to work without dust, you need to make a small and inexpensive device for an angle grinder.

This device is very similar to a medical IV. We insert a dropper tube into a regular plastic bottle with a volume of 1.5 - 2.0 liters. We leave only the regulator on it. In the protective casing of the angle grinder we make a hole along the diameter of this tube. We insert another similar tube into this hole.

We connect these two tubes, pour water into the bottle and open its supply to the circle. After the first rough cut, we adjust the water supply, which should extinguish all the dust released during cutting.

With such a device you can process concrete, brick and many other materials that, when destroyed, emit a large amount of dust.

How to properly saw or cut with a grinder

Different materials behave differently when processed with a grinder. Some immediately overheat and break, others become deformed, and others do not want to be processed at all. It’s difficult to know all the intricacies of working with an angle grinder, but practice requires knowing at least something.

We cut paving slabs, tiles, porcelain tiles

To cut paving slabs with a grinder, you will need a special circle with a diamond cut. Markings are made on the tile, and along this marking a cut is made to almost half the radius of the circle. If the grinder has a large circle, then in one pass you can cut the tile to its entire depth at once. The main thing is that it is no larger than the radius of the circle. If the radius of the circle is insufficient, the tile is turned over and a counter cut is made.

Tile without chips is better processed with a stone cutting wheel. A line is drawn on the tile along which a contour cut is made. Then the depth gradually increases. When the cut part becomes larger, the tile is placed on the edge of the table and broken along the line. Unevenness and roughness can be worked on later.

Porcelain stoneware can be processed well with a stone wheel. The cutting technology is no different from the technology of cutting tiles.

Cutting wood with a grinder

Compared to other building materials, wood has always been and remains the most flexible in processing. The grinder produces a wide variety of discs for cutting wood.

The most common blade, the look of which we have long been accustomed to on a circular saw. The peculiarity of selecting such a disk is that the calculated speeds of the grinder and the disk must match. Only in this case it is possible to trim smoothly and without burning the wood.

This blade easily cuts wood in any direction, but traditionally prefers to cut across. It is easy to cut not only raw wood, but also tree knots. It is convenient to spread the boards into beams or slats. For a large volume of such work, the grinder must be fixed permanently. The result is a complete analogy of a circular saw.

Pressed wood materials of any density are also very easy to process. And, if it is necessary to cut a wooden panel filled with nails, then a disc is available for such work. He is not afraid of encountering nails. This universal disc is made from tungsten carbide by Bosh. The disc is marked Bosh Carbide Wheel. Available in sizes 76, 115 and 125 mm.

Grinder for brick, concrete, concrete ring

Cutting brick and concrete is done using special stone wheels. Brick is easy to cut, the main thing is to secure it correctly before cutting and not to use your foot as a clamp.

Concrete slabs or concrete can be cut with virtually no problems. But the concrete ring creates some problems. Not the concrete itself, but the steel reinforcement embedded in it. The circle in the grinder experiences a large load during concrete, and the reinforcement causes damage to it.

To shorten the ring by a certain amount, a cut is made from the outside of the ring. Then the cut part is broken with a sledgehammer, and the protruding reinforcement is cut into a circle for metal.

Corrugated sheets, metal and sheet metal

The grinder was originally intended for cutting and grinding metal, so cutting any metal is its element. For sheet metal of different thicknesses, select a circle of a certain thickness, select the rotation speed and perform the cut along the drawn lines. When approaching the extreme point of the cut, you need to recess the grinder a little so that the cut border does not have a bevel.

Using this technology, you can cut out different geometric shapes from a sheet of metal. To cut a square or rectangle, you need to draw dimensions on a sheet of paper. We place the circle of the grinder outside the square and make a cut in the metal. When all four sides are cut, cut out the corners.

Cutting corrugated sheets does not cause any difficulties. The cut starts from any edge or in the middle, if required. The only caveat is that when cutting thin metal, a torn cut is formed on the reverse side. To avoid injury and for the cleanliness of the work, it is better to sand this cut.

Cutting pipes and gas cylinders with a grinder

A large diameter pipe, like a gas cylinder, is not an exception in the operation of an angle grinder. A large diameter pipe can be thought of as a sheet of metal. It is difficult to cut a cylinder that contains a trace of gas or condensate. This is very dangerous due to possible explosion.

To ensure safe cutting of the cylinder, you need to unscrew the valve. This is difficult to do, because over time the thread grows tightly together. In this case, it is necessary to weld the cylinder by the stand, which is located in its lower part, to a massive plate or frame.

It is easier to unscrew the valve on a welded cylinder. Water is poured into the vacated hole until it overflows, and then they begin cutting with a grinder. Cutting a cylinder is no different from cutting a large diameter pipe.

Glass cutting

The grinder has no problems when cutting glass. For this operation, you can use the cheapest ceramic wheel. A light contour cut is made and then deepened. The cut glass is laid out on the edge of the table and broken.

Cutting glass pipes with a grinder can be considered using the example of cutting an ordinary glass bottle. The bottle is placed in an extended vice or placed between two wooden blocks. Turning it little by little, make a cut with a grinder. The bottle is rotated until the unnecessary part simply falls off.

How to cut slate without a grinder

If you don’t have a grinder, you can cut the slate sheet using a regular hacksaw. A hacksaw with fine teeth and a slight gap is better suited for this work. As a last resort, you can use a hacksaw blade from a hacksaw for metal, or just a knife.

The main thing is to correctly distribute the forces and load on the sheet to avoid chipping and breaking the slate. Wave slate is somewhat more difficult to cut, but a sheet of flat slate is easy to cut with any tool.

Source: http://instrument-blog.ru/elektroinstrumenty/kak-rezat-bolgarkoj.html

How to cut metal with a grinder

A grinder is a universal tool, without which no construction can be completed. However, there is no single rule on how to cut correctly toward or away from yourself. Opinions were divided. Each method has pros and cons. One thing is certain, the main thing when working with a tool is safety.

Ushm or grinder what is it?

The grinder, known throughout the world as an angle grinder, was created by German designers in 1954. Electromechanical tool for grinding, cutting and stripping materials. The instrument came to the former Soviet Union from Bulgaria, where it was made at that time. Therefore, the angle grinder received such a nickname.

Bulgarians are:

1. Large: length 400 - 500 mm, height 140 - 160 mm; power up to 3 kW. Used in production.
2. Medium: length 300 - 350 mm, height 130 mm; power up to 1.5 kW. Used for professional work.
3. Small: length: 250 - 270 mm, height 90 - 110 mm; maximum power 1.2 kW. For household work.

Using a grinder, stone, metal, and plastic are processed. It is not recommended to cut wood with a grinder for safety reasons. Specific circles are used for each material.

How to cut correctly

All workers who use an angle grinder are divided into two camps. Some cut away from themselves, others towards themselves. There is no single rule, only recommendations. This is proven by the fact that the instrument can be adjusted for both the right and left hands, and the rotation of the disk can be rehearsed in both directions.

Cut away from yourself

When the grinder is configured in such a way that the disk rotates clockwise, you need to cut the material in the direction away from you. If you cut on the contrary, the grinder will jam, this will damage the disc.

The main disadvantage of this way of working is that sparks and dust fly towards the carver. If cutting brick or concrete, wear a respirator, otherwise the airways will become clogged with dust. Clothes are carefully fastened to reduce dust getting under the overalls.

When cutting metal, a sheaf of sparks flies towards the worker. This may cause the clothing to catch fire. The cuffs on the sleeves and the tops of the trousers are tightened tightly to prevent sparks from getting on the skin.

The main argument used by supporters of self-cutting is safety. If the disc is bitten, the grinder is pulled out in the opposite direction from the cutter, which means the likelihood of injury is reduced.

Important. To change the direction of rotation of the disk, turn the protective casing 180 degrees. Twist the handle into the hole on the back of the gearbox. Everything is carefully tightened and checked.

Cutting on yourself

When the cutting disc on a grinder rotates counterclockwise, the correct direction of the cut is towards you. Otherwise, the grinder will jam and the disc will fly apart.

The disadvantage of this method is the risk of injury. If the disk is bitten, the driving force throws the tool towards the cutter. If you do not hold the grinder firmly, this can lead to serious injuries: deep cuts or severe bruises.

Therefore, this method of work requires full concentration; the hand is placed on the stomach and the movement of the disc is controlled. If the machine starts to work with voltage, this is a sign that you need to be careful.

The advantage of cutting towards yourself is that sparks and dust fly in the opposite direction from the cutter. This does not mean that you do not need to take precautions, but in the case of dust there are fewer problems.

The gearbox of the grinder, when it is configured for self-carving, is located on the cutter’s side, there is less chance that work clothes will wrap around the disc. But this rule applies to those who have a right hand. For left-handers, the grinder is adjusted individually.

Important.

Once the disc bites, it is difficult to unscrew the fixing nut. To do this, cut out a washer the size of a nut from thick paper or thin rubber and insert it between the disk and the clamp. Even if the disk jams, the nut is unscrewed without gouging or heating.

Required Security Measures

The main thing when working with an angle grinder is safety. No matter which way the sparks fly, serious injury will result if safety precautions are not followed.

Precautions when working with an angle grinder:

• safe place to work;
• individual protection means
• good tool.

Safe place to work

Before you start cutting, prepare the work area. Clear the site of debris so that nothing interferes with work. Remove flammable materials and combustible substances from the site. Check the area for power cables.

Choose a place with good natural light. If this is not possible, install lanterns or fluorescent lamps.

Work with an angle grinder only in dry weather; you cannot cut during rain or in rooms flooded with water.

During work, remove jewelry, chains, key rings, and objects that may get caught in the mechanism. So that they don't get wrapped around the disk.

At a construction site you need a class A, B or C fire extinguisher, it all depends on the place of work.

Individual protection means

Be sure to use protective equipment for the eyes, body, hands, feet and hearing. The equipment must be held tightly so as not to get caught in the rotating part of the angle grinder.

While cutting, sparks fly and can get into your eyes. For protection, wear goggles or a transparent plastic mask.

The sound of a working grinder irritates the eardrums. To protect your hearing, use earplugs or wear construction headphones.

Work with an angle grinder wearing work gloves to avoid cuts and abrasions. Select mittens according to size so that they do not dangle on your hands and do not accidentally get wrapped around the rotating disk. Also make sure that the mittens are not torn.

Working on time, the grinder raises a lot of dust. To protect the respiratory system from dust, wear a respirator.

Heavy boots with iron inserts will protect your feet when metal parts fall. Shoes are tightly laced to prevent sparks and scale from getting inside.

For work, wear protective clothing made of thick material that protects against sparks and abrasions. Work clothes should be tightly fastened, not dangling or hanging, so as not to get on the rotating part of the angle grinder.

Working tool

Before work, check the working condition of the tool. The cable and plug from the angle grinder must be undamaged, otherwise a short circuit or electric shock may occur during operation. This is dangerous because the hand can jerk in any direction.

The protection on the angle grinder must be tightly tightened. The casing is installed in such a position that sparks do not fly into the face or onto clothing. Therefore, first the direction of the sparks is determined and protection is installed.

The handle on the gearbox must be intact without cracks or chips, so as not to break during cutting. It is screwed in tightly so that there is no backlash.

To prevent the grinder from causing serious injuries, you need to take precautions. Everyone chooses for themselves how to cut for themselves or for themselves. The main thing is not to lose concentration while working. In this case, the tool will become a good assistant for solving construction problems.

Source: https://stroytool.info/pily/kak-rezat-bolgarkoj-metall.html

How to cut a round hole in tile or metal with a grinder - Review

How to cut a round hole with a grinder? Quite often, the question of how to make a hole in a tile accurately and quickly can take home craftsmen who have little experience by surprise. But in fact, there are quite a lot of interesting implementation options. Indeed, the need to create a hole in ceramic tiles may appear at any stage of repair work, even long before everything begins.

This, as well as the diameter of the circle being made, will largely determine how to act in each situation and which tool is best to use to make a round hole in the tile.

Using hand tools

If you do not have electric tools and you do not know what to use to make a hole in the tile, then you can use the simplest method - a tile cutter and tongs (or pliers).

The sequence of actions will be as follows:

1. Before you start cutting a hole in a tile, you should mark the boundaries of the future hole on its surface.
2. To make the material softer, you should soak it in water for a short time beforehand.
3. If you use a glass cutter, make sure to follow the markings and do not tear the cutter from the base. To be able to cut a groove, you should apply enough force to the handle, but so that the tile is intact and does not crack (this is especially true if you have a glossy glazed tile).
4. Along the cutting line, tap the groove with the back of the tool so that it is as deep as possible.
5. Using pliers, break off the material, piece by piece, until you are left with an even cut along the markings.
6. If jagged edges remain, the cut circle should be sanded using fine-grain sandpaper.

The method is labor-intensive, but it will be a great help if you don’t have the right tool at hand. Now let's look at how to use an electric jigsaw.

Using an electric jigsaw

A tool such as an electric jigsaw, which has a diamond wire, has proven itself quite successfully on ceramic material.

When using it, it is possible to create any end-to-end shape in the tile, both in the central part of the tile and on the edge. The latter is sometimes required to install an outlet.

But for the first case, it would be great to have an electric drill and a drill on hand to cut holes in the tile in the place where the outlet will be located.

So, how can you make a round hole with an electric jigsaw?

1. Draw a round hole on the outside.
2. Immediately after this, you should start cutting it out if the element to be cut is located near the edge.
3. In order for the hole to be centrally located, you should first use a drill to drill a small diameter hole on the ceramic in the place where there will be space for installing the socket. A cutting thread should be passed through it and the tool should be brought to the edge of the cutout.
4. Slowly insert the device along the marking line. You should gradually retreat inward from the line, while trying not to capture additional areas. You should use the same method to cut the hole with a standard hacksaw, but then do not count on good quality of the cut.

As you can see, the method is quite simple and convenient.

Grinder and its use

The grinder is an absolutely excellent tool. Often, thoughts about how to create a hole in the tiles appear precisely at the moment when laying the tiles is required and it is necessary to place it under the pipes, toilet and faucet. The grinder makes it possible to process ceramics when they are not yet attached to the wall. such a tool will also be appropriate for performing figured cutting on the edge of a tile square.

How to cut a hole in a tile using a grinder:

1. Mark a line that will serve as a guide when cutting.
2. The grinder should be equipped with a diamond disc, which is used for the dry method.
3. You should start cutting from the side where you feel most comfortable. Insert the instrument slowly, moving it slightly away from you to the side.
4. If it is inconvenient to work, make a semicircle, and then start moving with the tool in a different direction. But keep in mind that in this case you should make sure that the cutting points coincide.

The grinder is the most convenient for creating round holes.

Scouring tiles

The second option for creating tiled holes assumes that the tile will be fixed to the wall. in this case, you should use the classic method, in which the wall is scored with a drill. When working on cladding material, use either a cone drill or a typical twist drill.

To create holes in a tile using a simple drill, you will need to do the following:

1. To reduce the sliding of the cutter, you should cover the ceramic surface to be treated in the drilling area using masking tape. This will make it possible to keep everything in its original position.
2. Place a point where you want to drill.
3. Drill with a rotary drill at low speed.
4. To avoid overheating of the nozzle, you should wet it a little from time to time. You can also spray the trim, but only after you have gone a little deeper into the wall so that the drill does not slip off. If you need to create a large hole, you should do it a little differently. The beginning of the work will be similar, but after that you should replace the drill with another one with a larger diameter. We recommend gradually widening the drill, and this will help reduce the risk of chipping to zero.

Please note that there is another way to create a larger notch. For the border of the future hole, use a thin drill to make many holes. After this, you should carefully knock out the central part and sand the nicks.

Working with special attachments

So, what else can you use to make a round hole? In addition to standard glass and tiled surfaces, there are other alternative attachments for the drill.

Diamond-coated bits can be used if you need to cut out a socket outlet, tap out a faucet in a bathroom, or other areas. Drilling is performed by rotating the crown, which is placed on the guide drill.

 The accuracy of creating an opening will be largely determined by the properties of diamond-type sputtering and the size of the grains. The disadvantage of this method is that the cost of the crown is quite high.

Using a crown, the hole is made as follows:

1. Place some masking tape on the ceramic.
2. The cutting contours are drawn.
3. Attach the tool with a crown, and then begin to smoothly insert it deeper and deeper.
4. To prevent overheating, the crown should be periodically moistened.

A tile drill, otherwise called a “ballerina”, makes it possible to create round holes with a large diameter. The principle of operation of such a device is reduced to the following - the electric tool is activated, which is reflected in the drill simultaneously with the cutter, which is movable and mounted on a rod.

Due to this, it is possible to move the cutter and shift it along the rod, and you also have the opportunity to set the parameters of any circle within the reach of the rod size. The convenience is that you do not need to spend a lot of money buying many crowns with different diameters. Another advantage of the method is that the cost of the device is affordable for a wide range of users.

The operation is performed as follows:

1. A dot is placed in the center of the diameter of the circle.
2. Adjust the circular drill according to the diameter you choose.
3. They pass through the glazed thickness.
4. Make a recess on the second surface of the element.
5. They cut the circle from the outside.

Despite the fact that this method has many advantages, there are also disadvantages, namely:

• You can't make many cuts with this device.
• The number of cuts is limited and equal to 30-40.
• The drill should be used with extreme caution, and should only be turned on at low speeds, as otherwise it can easily chip.

If you are going to use any of the methods described above, you should never use a percussion instrument. Its use can negatively affect the integrity of the tiled element.

Knowing the methods for drilling tiles will help you choose the one that will be best suited for the job you are doing. During repairs, you may repeatedly need to create holes in the tiles for pipes or sockets.

Moreover, such a need may arise both after installation and during.

Let's look at how to deal with both situations and what tools you can use. When doing tiling work, you can’t do without drilling tiles. Most often, in order to make a round hole in the tile, you need to do it at the installation stage. Until the material is attached to the surface, this cannot be done. The tool will come in handy more than once when tiling walls and floors. It is also suitable for curly cutting along the edge of the tile.

How to make a hole in a tile using a grinder:

1. Select the outlines.
2. Arm yourself with a diamond blade for dry cutting.
3. Start cutting from the edge that is most convenient for you. The tool should be guided smoothly, away from you, and also hold the tile with your hand so as not to damage your fingers.
4. If the working surface is not comfortable, you should stop in the middle and bring the grinder from the other edge, but in this case there is a high risk that the cut line will come off. You should only work on the front side of the tile to avoid chipping.

As you can see, everything is not so complicated, and you have the opportunity to choose the tool that will be appropriate in your case.

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Source: https://domsdelat.ru/instrumenty/kak-vyrezat-bolgarkoj-krugloe-otverstie.html

2 ways to cut an even circle from metal using an angle grinder

You can cut an even circle from a sheet of metal using an angle grinder (grinder). However, for a better quality cut you will need a device that is easy to make with your own hands.

In this review, the author shows two ways to cut an even circle from metal using an angle grinder.

For the first method, you will need to make a simple rotating stand with a magnet for the grinder.

We recommend reading: a homemade angle grinder for cutting metal workpieces.

Main stages of work

The first step is to make a mount for the grinder. To do this, the author cuts off two metal plates, drills holes in them and attaches them to the gearbox housing using bolts.

After this, you will need to cut another plate and weld it to the first two plates.

Next, the author welds a steel strip to the resulting fastening, the end of which is fixed to the body of the angle grinder using a clamp.

A bolt will need to be welded to the angle grinder mount (in the center of the top plate).

In the next step, the author cuts a piece of a round tube. You need to put a sleeve (from a larger diameter pipe) on the tube with a fixing bolt, and weld nuts to the ends. The author welds two pieces of tube to the bushing.

Next, you need to make another bushing with a lock. It must be welded to a round magnet (can be removed from the old speaker).

Then you can start assembling the device. For convenience, the author screws the handle from the angle grinder into the tube. We install the stand on a sheet of metal, set the desired size and you can cut out a circle.

Turntable manufacturing process

There is also a second way to cut a circle evenly. For this, a previously made rack is used, and it will also be necessary to make a rotating platform.

First, the author cuts a piece of a thick-walled round pipe into which two bearings must be pressed and welded.

After this, a piece of pipe with bearings will need to be welded to a square plate. Four mounting holes must be drilled in the plate.

The author attaches the resulting turntable base to the workbench using bolts.

Next, the author disassembles the second round magnet. A piece of round steel must be welded to the metal plate, the diameter of which is equal to the internal diameter of the bearings in the pipe.

Then the magnet itself needs to be glued back to the plate (the author uses quick-drying glue for this).

The author cuts a circle from a sheet of metal. A magnet with a metal rod is installed in the center. After this, four sections of profile pipe must be welded to the circle.

In each section of the profile you need to drill one hole and then weld the nuts.

The author tightens the bolts into the nuts. Then pieces of a round rod are welded to the bolt heads (you can use square pieces). We insert profile sections of smaller diameter and fix them.

The turntable is attached to a base screwed to the table. The author places a sheet of metal on top, and then installs a stand with a grinder.

For more information on how to cut an even circle from metal using an angle grinder, see the video below.

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Source: https://sdelairukami.ru/2-sposoba-kak-vyrezat-rovnyj-krug-iz-metalla-s-pomoshhyu-ushm/

Cutting sheet metal with your own hands, smoothly, any shapes

DIY sheet metal cutting. How to evenly cut a sheet of metal using improvised materials. Cut out the circle and other shapes.

Sheet metal is a common building material used to make fences, gutters and canopies. You can often find ready-made galvanized steel products on sale, such as ridges or pipes for draining rainwater from the roof. But what if the product is of non-standard size and you need to cut sheet metal yourself?

Initially, when choosing tools, you need to decide on the tasks. Not only the amount of work matters, but also the time frame, the accuracy of the cut and the possibility of damage to the protective coating. Electric scissors are often used at construction sites. However, you should not expect a very smooth edge. The advantage of such a device is the speed of work.

How to cut a sheet of metal straight? At home, the problem can be solved quite simply - by using metal scissors. But this method requires a lot of time and physical effort. Scissors will not work if you need to cut long strips. The most even cut can be obtained using slotted scissors. This tool is quite expensive and is usually used by professionals.

Equipment for cutting profiled and galvanized sheets:

• Bulgarian;
• low speed saw;
• electric scissors;
• hacksaw;
• jigsaw for metal.

One of the fastest ways to cut galvanized sheets is cutting with a grinder. Among the disadvantages of this processing are torn edges, which will have to be additionally cleaned and smoothed. A grinder is not suitable for cutting corrugated sheets, since sparks during cutting can damage the polymer coating. But for simple work that does not require high precision and accuracy, an angle grinder is quite suitable.

Please note that when using such a power tool, purchase a special disc that will not damage the protective coating on the galvanized sheet. After cutting the corrugated board, the edges must be cleaned and coated with special paint. This equipment can be used if you are building a shed from corrugated sheets or making a canopy. In this case, you do not have to purchase a special and expensive tool.

Rules when working with an angle grinder:

• choose discs with carbide teeth;
• operate at low speeds;
• Treat the cut areas with a special anti-corrosion coating.

Many craftsmen have a hacksaw for metal. This is a universal and cheapest tool. It should not be used if you need to cut out shaped edges, but for making smooth plates, a hacksaw is suitable. The biggest disadvantage of such a tool is the time it takes to carry out the work. You need a lot of it.

Jigsaw

If you need to cut a circle in a sheet of metal, you should use a jigsaw. It works quite quickly, so you will get a neat hole in a matter of minutes. Among the disadvantages of the equipment are noise and the possibility of a burnt edge when processing profiled sheets.

Subtleties of working with a jigsaw:

• it is necessary to use saws with fine teeth;
• you need to choose a reciprocating mode;
• it is necessary to control the inclination of the cutting part;
• rapid failure of consumables.

A circular saw

Sometimes a circular saw is used to cut metal. If you work with corrugated sheets, then the equipment must be turned on at low speeds. Otherwise, the polymer coating may be damaged. To work, you will need a partner to hold the sheet. Among the advantages of this tool is that the work is performed without heating, so you will not damage the protective coating on the profiled sheet. It is best to use an aluminum circle.

To set up fast work with a circular saw, you need to prepare a plywood pattern. The groove is not completely cut out in this sheet. This will be a kind of blank that allows you to preserve the galvanized or polymer coating on the sheet. An excellent tool for cutting metal is a double-blade saw. It, unlike the grinder, does not leave a torn edge and works much quieter. Unfortunately, not every master has such a tool.

It all depends on the size of the hole. If the diameter is small, a drill will do. If large holes are needed, special drill bits are used. Pay attention to the material from which the horse-drawn horse is made. To process profiled sheets, you should use nozzles with a carbide coating. Processing should be carried out without increasing the temperature.

A jigsaw is used to make a large diameter hole. With this tool, cutting out a circle of large diameter will not be difficult. When working, use a saw with fine teeth

Source: https://the-master.ru/listovoy-prokat/kak-rezat-listovoj-metall

How to cut a circle from a stainless steel sheet?

Any design, whether in your home or in production, involves working with metal.

Often, during the operation of this material, the question may arise: how to cut a circle in metal?

It deserves attention, since the labor intensity of the work process and the quality of its result directly depend on the choice of the right tool and technology.

How to Cut a Circle in Metal with a Grinder

How to cut a hole in metal at home

You can cut any holes accurately in metal

Unfortunately, for home workshops such high-precision equipment is a luxury if they have to use other methods, some of which are quite extraordinary.

Metal marking

The outline of the hole to be cut should be marked on the metal. Cutting a round hole in metal is not as difficult as drilling a hole in glass, but it is more troublesome. Marking is carried out using a marker, a ruler, or a marking compass. For a hole consisting of straight lines, marking is carried out using a ruler and not a marker. A compass is used to mark a round hole. To make the oil more visible, it is pointed with a marker.

Hole cutting

A rectangular hole in metal is much easier to cut with a grinder. For this purpose, a circle with a thickness of 0.8 to 1.4.5 millimeters is installed on the machine. The carving is carried out along the intended straight lines until the sheet of metal is cut through. You should use the grinder carefully in the corners, since it is easy to make a cut here than is simply necessary.

Round holes are cut in most cases with a gas cutter:

• It is necessary to light the burner;
• The torch should be well adjusted;
• The torch should be guided with slow movements along the intended contour.

The rare home craftsman has a gas cutter; in this case, a round or oval hole is cut using a welding machine. How to cut a circle from a hole in metal with a grinder .

How to cut a circle “pancake” came out good and I made a hole in it according to the template using a grinder. The device is set to the maximum possible current. How to cut a round hole in metal: instructions. The ignited arc is installed in any populated area of ​​the hole contour.

After a while, a hole will appear in the metal, then the electrode should be guided along the contour while burning the metal.

How to cut a circle with a grinder part 1

How to cut a straight hole in metal with a grinder . How to cut a circle from metal in 2018 how to cut. My method is suitable for metals approximately 1-5 mm larger.

The metal has different thicknesses and not all of them can be taken by any device. So, with a device with a power of no more than one hundred and fifty amperes, it will be possible to cut metal with a thickness of no more than four millimeters.

The cutting speed in this way greatly depends on the thickness of the electrode. The work is carried out most quickly with thin electrodes, but they have their drawback - rapid combustion, leading to frequent replacement of the electrode. When replacing the electrode, the metal has time to cool down and has to be heated first.

Round hole in metal with an angle grinder

You can try cutting a round hole with a grinder. How to cut a circle with a grinder, part 1, how to cut a straight hole in metal with a grinder.

Numerous short cuts are made along the perimeter of the entire intended contour until they merge into a single contour.

In this case, the hole is a polygon with a large number of sides, and the more sides there are, the more the polygon will resemble a circle . It is worth noting that this option is chosen only in the case of thin metal - a maximum of three millimeters.

The finished hole necessarily needs additional processing, which allows it to obtain a more regular shape. If the hole is large, it can be processed with a grinder with a thick disk. To do this, place the circle inside the hole and make sure that it is in the same plane with the metal sheet. How to cut a circle with a grinder part 1. By turning on the grinder, you can sharpen the outline.

Unusual metal cutting option

If you don’t have a grinder, a gas cutter, or a welding machine, an electric drill will help you make a hole in the metal. This method should be used only as a last resort, since it is considered the most labor-intensive. 59 how to cut a round hole in metal with a grinder. How to cut a straight hole in metal with a grinder.

At a distance of half the drill selected for work, another circle should be drawn inside the desired circle. Drilling locations are marked in a circle of smaller diameter. The distance between such markings should be the diameter of the drill. In the marked places, through drilling is performed, and the remaining part is knocked out of the sheet of metal with a hammer.

With this option, inside the hole , which can be removed with a file or grinder .

Source: https://vdiweb.ru/kak-bolgarkoj-vyrezat-krug-v-metalle/

How to cut metal using a grinder

There is an opinion that the very concept of “grinder” came into our everyday life because this instrument was first brought from Bulgaria. This is partly true. But they developed it and began producing it in Germany. It first came to us from Bulgaria, where it began to be produced in the seventies. Angle grinder is the correct name for the tool.

When working with an angle grinder, it is imperative to follow safety precautions, namely: wear goggles, gloves, a helmet and a protective apron.

Today it is impossible to imagine the work of builders, repairmen, mechanics, and mechanics without a grinder. With its help you can cut a variety of materials, including metal: fittings, rods, water pipes, corners, profiles.

The resulting sections can be ground, polished, and sharpened. A large selection of interchangeable attachments makes this tool indispensable and versatile.

At the same time, it is the most dangerous tool.

To cut metal with a grinder you will need:

• mask;
• glasses;
• disks;
• Bulgarian;
• metal.

How to choose the right grinder

The grinder should fit comfortably in your hand.

The correct choice and quality of the grinder itself determines the quality of work and the safety of the worker.

When choosing a machine, you should focus on its main parameters: power and diameter of the cutting abrasive wheel. Its weight is also important, since you often have to work “in weight,” and its dimensions so that you can do work in inconvenient and hard-to-reach places.

Most buyers, when they see a powerful grinder, are somewhat frightened by the fact that it is more difficult to cope with it than with a low-power one. This is a misconception. With low-power grinders, disks jam more often, i.e. They physically cannot “pull out” the disk under heavy loads.

The situation, how the disk and the machine itself will behave after reducing the load, is unpredictable. Most likely, the grinder will be torn from your hands. The consequence of this will be a fracture of the disk, damage to the machine and injury to the cutter.

Therefore, it is better for beginner craftsmen to purchase an angle grinder for a 125 mm disc with a power of 800-1000 W and a spindle speed of 10,000 rpm. This power is enough to cut iron.

For cutting metal, there are machines for 115 mm discs powered by batteries, but, as practice shows, given their high cost, they do not justify themselves in solving everyday problems.

The handles of the grinder should be rubber or made of a material that will dampen vibrations from the machine.

But no technical characteristics reflect convenience and safety in operation. The grinder should fit comfortably and securely in your hand so that when working with metal, you can focus your attention on it, and not on how to hold the tool in your hands. It is desirable that the handles be rubber or vibration-damping material with indentations for the fingers.

Low-power grinders, as a rule, do not have an additional handle.

If you find any inconvenience when choosing, you should look for an angle grinder of a different model.

How to choose the right wheels

There are symbols on the circle that will help you choose the right circle.

When choosing disks, you need to know what they will be used for, pay attention to their diameter and thickness. These are the main parameters of the disks.

The smallest diameter is 125 mm, and the maximum publicly available is 250 mm. In professional grinders, the discs may have a larger diameter.

The thickness of the cut part and the maximum depth of the cut depend on the diameter of the disk.

If you plan to cut only metal, you need to purchase a cutting disc. It has the smallest thickness from 1 to 1.2 mm, for industrial angle grinders - up to 2.5 mm. This will ease the physical load on the grinder and the worker. The cut is neat.

If you plan to carve shapes on thin metal, then it is done with a disk of the smallest diameter or an old, almost used disk.

Many people believe that you need to use a diamond blade to cut metal. This is a completely wrong opinion. The diamond blade will simply get stuck in the metal and will be unsuitable for further work.

Experts say that even beginners do not encounter any particular difficulties when cutting metal with a grinder.

Basic rules for safe work when cutting metal with an angle grinder

Layout of the most dangerous sectors when working with an angle grinder, taking into account rebound and destruction of the disc.

The most necessary condition when cutting is strict adherence to safe work rules.

Manufacturers of angle grinders are constantly trying to minimize the risk of injury and injury by inventing and improving various protection systems. But no one will take care of the employee like he himself.

The main dangers that arise when cutting metal are the flying out of fragments of a broken disk, a flow of sparks and tiny abrasive particles, and the inability to hold the tool in your hands.

If the disk breaks or gets jammed, the angle grinder can break out of your hands at the most inopportune moment and with great force, so even before starting work, you should foresee the direction of its possible movement.

Safety rules cannot be neglected even when performing minor work.

Before starting work you should:

1. Protect your face, eyes, hands and, if possible, all parts of your body.
2. Remove all flammable materials and objects that are in the direction of the sparks.
3. If possible, secure the part being processed with a grinder in a vice. It is prohibited to hold the workpiece with your free hand or press it with your feet.
4. If you are installing a new disk, you need to “scroll” it with a grinder at maximum speed, placing it further away: the disk may turn out to be defective and fly into pieces.
5. Install, adjust and secure the protective cover.

It is best to protect your face with a special shield when working with an angle grinder.

During work you should:

1. When replacing disks during rest, you must disconnect the angle grinder from the network.
2. Use goggles or a face shield to protect your eyes and face—professionals use both during long periods of work.
3. Hold the grinder firmly during all work.
4. To replace the disk, you need to wait until it stops completely.
5. Work in protective gloves. It is not advisable to use cotton mittens; they do not provide sufficient protection, they can catch fire, and the threads can wrap around the grinder spindle or disc.
6. During work, you need to position yourself so that your face, and, if possible, all parts of your body, are not in the plane of rotation of the disc.

Upon completion of work you should:

• wait until the rotation of the disk has completely stopped and only after that put the tool on the floor with the disk facing up so as not to damage it;
• disconnect the grinder from the network;
• make sure there is no smoke or other signs of fire.

A typical mistake made when cutting metal: if the diameter of the new circle is larger than the size of the protective casing, it is removed. The casing is a protection in case the disk breaks and falls into pieces while cutting metal.

Instead of a disk, many people use cutters, saws or other available materials. Doing this is strictly prohibited.

How to properly cut metal with a grinder. Practical tips and advice

If long pipes lie on supports, you need to cut off their overhanging edge. If you cut them in the middle, then due to its own weight the metal will bend and jam the disk.

If you do not have the skills to handle an angle grinder, then before starting work you should learn how to cut unnecessary parts.

The cutting wheel only takes radial forces. Attempting to change the cutting plane while the blade is inside the metal part will result in its failure.

The heel of the disc (the near lower part of the circle) cuts metal more efficiently.

In order for the grinder and discs to serve for a long time, every 5-7 minutes of work you need to take a break for 20-30 minutes. This rule is especially important for low-power angle grinders who are afraid of overheating.

To increase the service life of discs, especially expensive ones, and to cool the metal, the cut area should be watered with water. It is advisable to carry out the work together.

Aluminum is a very tough metal. When cutting a piece of large thickness, you need to drip kerosene into the seam, observing fire safety rules.

For molding, cutting tin, and figured carvings, you should use worn-out disks—“bits,” so you shouldn’t throw them away right away.

It is correct to cut the corner not in one step, but separately both shelves.

If pipes, angles, or fittings are long enough to rest on supports, cut the overhanging edge correctly. If you cut between the supports, the part will bend due to its own weight and jam the disk.

Parts of large thickness are cut only in a straight line. If you need to cut out a shaped part, first straight cuts are made, then the remaining unnecessary parts are removed.

You should not put pressure on the grinder. This will lead to jamming or breakage of the disc and overheating of the angle grinder. If the cutting process is slow, the blade should be replaced.

The resulting cut should not be processed with the side of the disk. A different type of disk is used for this.

Molten particles of metal and abrasive, falling on plastic products, glass and car headlights, stick to them, and then it is almost impossible to remove them. Therefore, they must be removed or protected before work begins.

Is it possible to use a grinder for cutting metal tiles and corrugated sheets?

At the time when metal tiles and corrugated sheeting had just begun to be used, the instructions stated that using a grinder to cut these roofing materials was strictly prohibited. This is explained by the fact that on both sides they are protected with zinc and polymer coatings and painted.

The abrasive disc heats and melts the material. The cuts are torn. Flying sparks will also damage the paint. All this causes corrosion of the material and a decrease in service life.

However, recently builders have begun to use an angle grinder for this work. This makes the work much easier; it can be done directly on the roof. After cutting, the edges must be treated with anti-corrosion agents, primed and painted.

Brief conclusions

Cutting metal correctly with a grinder is not difficult. Everything can be learned. The main thing is to follow safety rules and follow recommendations.

Source: https://1metallocherepica.ru/instrumenty/kak-rezat-bolgarkoj-metall.html