How to cut a round hole in metal with a grinder

Making a garden bench with a backrest with your own hands: instructions without complex drawings

How to cut a round hole in metal with a grinder

It’s not difficult to make a bench with a back from wood with your own hands. The material is ordinary beams and boards, sanded and varnished. The base is often made of a metal profile. Wrought iron supports look good. They can be given any shape according to the sketch. Objects that can support the weight of a person are used - old furniture, car tires, logs and processed stumps. There is only one rule - country furniture should be comfortable and functional.

Making a garden bench simply and without special skills

Design options
Prefabricated elements
Making a wooden bench

  • Material and tools
  • Step-by-step instruction

Installation of swings on suspensions

Design options

You can assemble outdoor furniture for your garden yourself. This does not require professional tools or special skills. Before starting work, you will still need to draw a diagram indicating the dimensions of the parts. When there is visualization and specific dimensions displayed on paper, it is more difficult to make a mistake.

There are only three main technical solutions. Most ideas are just variations of them.

Types of benches

  • Stationary benches are portable or have a fixed foundation.
  • Transformers - built-in mechanisms allow them to be folded and unfolded.
  • Outdoor swings - there are adult and children's models. In this case, we will talk about suspended seats mounted on supports and designed for two people.

These three varieties have one thing in common.

Even if the model is made entirely of metal or stone, the lining is made of solid wood - it is more pleasant to touch. Models should be comfortable and not clutter up the space. It is better to determine in advance where they will be. Swings have special requirements. Moving structures should be made safe. They need a large margin of safety. It is advisable to install the supports without corners - if they hit, they will cause less damage.

It is better to wrap chain pendants with fabric so that the links do not hurt your hands.

The simplest design is a deck mounted on supports. It can be mounted on two wide logs placed vertically. Such a foot is often dug into the ground. If you level the bottom and make it stable, you will have to look for a flat area.

Even with a slight difference in height it will wobble. The base of the vertical part is two beams nailed to the back side of the logs and connected by horizontal boards. If you attach them at an angle, securing them to the sides of the base, it will be possible to adjust the angle.

This will make the shop more convenient.

The cladding consists of one element or several. It is more convenient to install them if both sides have a flat surface. The rounded side holds up worse.

Another of the simplest technical solutions is a thick trunk about a meter wide with a seat hollowed out inside. To get the job done, you will need an ax and an electric jigsaw. The disadvantage is the large mass - it will be quite difficult to move the barrel yourself.

The body is made of varnished beams connected by a metal rod at the top, bottom and in the center, where the horizontal and vertical parts are connected. At the junction, the vertical elements are passed between the horizontal ones and stitched together in this position.

Stationary models are the most diverse. The back side does not have to be mounted to the base. It is often dug into the ground. These can be intertwined branches, sculptures, fancy installations. Preparing a visualization in this case is not easy. It's better to act impromptu. A drawing of a bench with this approach will not be needed.

When planning to assemble a garden bench with a backrest with your own hands according to drawings or a diagram drawn by hand, you need to decide what it will be made of. The base is a frame made of timber or metal profile.

Wooden parts

In order for outdoor furniture to last a long time, you must first pay attention to the condition of its prefabricated elements. It is better not to use old dry boards and beams with holes left by nails. There should be no traces of mold or damaged areas on the surface.

The durability of the bench depends on the type of wood. Oak will last much longer than pine or birch.

Products may vary in quality. For example, according to GOST, lining is divided into four classes. The evaluation criteria are the uniformity and strength of the structure, as well as decorative qualities.

New products must be treated before use. It's better to start by drying them. Even a flawless array contains excess moisture. It is removed to protect the tree from temperature and humidity deformations. When wet and dry, the fibers change their shape. In addition, frozen water expands and destroys them from the inside.

Drying is carried out outdoors or indoors. You should not turn on the radiator at full power - otherwise moisture will be removed unevenly, which will lead to irreversible deformations. The products are stacked, making a layer between each tier for normal air circulation, and kept for several days.

Before you make a bench with a back with your own hands, the workpieces must be protected from the external environment. The dried material is impregnated with antiseptics. There are ready-made solutions that do not need to be diluted yourself.

They are non-toxic and do not cause corrosion of metal fasteners upon contact with the array. Use sodium fluoride solution and oil antiseptics. Technical oils have high performance, but when they evaporate they release substances that are harmful to health.

After impregnation, the surface is covered with plastic film so that the mixture completely penetrates the structure, and then dried.

For legs and supports in contact with the ground, special products are used, for example, NEOMID 430 Eco. They are highly durable and do not wash out in a humid environment. After this treatment, the racks can be dug into the ground without fear for their condition.

After the antiseptic has dried, the parts are varnished. Drying oil is used as a primer. Semi-natural formulations are well suited for this. Modified drying oils with additives have improved properties. They improve adhesion to the finish coat and create a solid base for its application. The coating dries within 24 hours, after which you can begin painting and varnishing.

It is better to use oil and polyurethane compounds. Polyurethane is characterized by increased resistance to external influences. They protect well from moisture and scratches and do not darken over time. The product is applied in two stages using a brush or spray. The first layer is dried and sanded with fine sandpaper, then the second is laid.

When creating a wooden bench with a backrest with your own hands, unusual materials are often used: logs, stumps, thick branches and even interior items. In order for them to last as long as possible, they must be processed, just like simple blanks.

Fasteners are nails and screws. Nails hold less well in solid wood. They have to be constantly knocked down. To connect heavy parts, they are placed on anchors. All metal fasteners must be galvanized, otherwise traces of corrosion will become noticeable in the first year.

Professional carpenters grind the parts, creating grooves and protrusions on their sides that match in size. For reliable fixation, use wood glue. Traditional methods are equally reliable, but there are other options. An unusual way is to use a rope. Over time it stretches. The nodes and winding will have to be updated frequently.

Metal elements

They serve to create a load-bearing frame covered with boards or beams. Steel and aluminum profiles are used. This can be a regular corner or a tubular profile with a round or rectangular cross-section. The fewer sharp corners, the better.

Metal is stronger and more durable than most types of wood. Its load-bearing capacity is determined by thickness and alloy.

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

The disadvantage is low corrosion resistance. Primers and oil-based coatings only provide protection for a few years. Products with a galvanized or copper-plated surface have high durability. Such processing can only be carried out in a workshop.

Wrought iron has the highest durability. Its advantage also lies in the possibility of making legs and sides according to your own photos and sketches.

Welding or screws are used for connection. The first method allows you to create smooth and reliable joints. The second one is suitable if renting a welding machine is not possible. The downside is that protruding screws and nuts are unattractive. It's easy to get caught on them and get hurt.

How to build a bench with a back from solid wood

Consider making a more traditional portable design with four legs. Its dimensions: height - 1.2 m, width - 1.55 m. Horizontal height - 40 cm.

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What you need for work

  • Boards 3-5 cm thick and 15 cm wide for racks and seat trim.
  • Blanks with a cross-section of 3x5 or 5x5 - we will make stiffeners from them.
  • Self-tapping screws and screwdriver.
  • Drill and wood bit.
  • Hacksaw.
  • Plane.
  • Sandpaper or grinder with a grinding wheel.
  • Hammer.
  • Pliers.
  • Pencil, ruler and tape measure.

Step-by-step manufacturing instructions

Let's start with the blanks. The seat consists of three, and the back of two boards 1.5 m long. We also need legs - two 40 and 120 cm each. We will place the short ones in front. To give it a slope, we cut the upper part of the rear supports at a slight angle, fixing them in a vice. You will need to place a rag underneath, otherwise the vice will leave noticeable marks.

The legs forming the sides are connected at the top and bottom with beams. They perform the function of stiffeners. We will place the lower elements at a distance of 10 cm from the ground. We will lay the sheathing on the top ones. We will fasten the sides with a backrest on top and a seat in the center. We will place an additional stiffener on the lower bars.

The closer the pairs of legs are, the less stable they are. The width of the lower part of the structure will be 1.3 m, depth - 0.55 m. Seat depth - 0.45 m, overhang on each side - 10 cm. We will fix the top board 3 cm above the base, leaving a small gap from the bottom.

You will need to pre-drill holes for the screws. The markings will be more accurate if you attach the prefabricated elements to the installation site.

How to make a comfortable bench with a suspended backrest

The simplest solution is to dig two pillars 10-20 cm thick into the ground, connecting them with a reliable jumper. At a distance of 2 m you need to install the same pair. A beam is placed on top of the lintels, onto which a suspension with a seat is attached. The height of the supports is 2 m. The width of one pair is 0.5-1 m. They are buried 1 m.

The swing is in constant motion, so the parts need to be fastened with thick, long screws. The nails will quickly become loose.

It is better to weld portable swings from a steel pipe profile. Wooden structures lose strength when moved frequently.

Metal sidewalls are made in the shape of a pointed triangle, installed with a short edge on the ground. All corners of the sidewalls are connected by jumpers. There should be no isolated legs. Suspensions are chains or ropes secured with carabiners at the top and bottom.

Source: https://www.ivd.ru/dizajn-i-dekor/mebel/delaem-sadovuyu-skamejku-so-spinkoj-svoimi-rukami-instrukciya-bez-slozhnyh-chertezhej-57301

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

How to cut a round hole in metal with a 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://labuda.blog/491303

The husband took an iron barrel, a grinder and white paint. Now the neighbors are jealous of our outdoor fountain

How to cut a round hole in metal with a grinder

I love the sound of running water. It is so calming and relaxes the nerves. And since we had free space near the kitchen window, we decided to turn one of the empty barrels into a fountain. My husband did a great job. Now our yard has become very cozy!

Miracle in a Barrel

Not only did the empty space become beautiful, but it began to bring a lot of usefulness. I want to share the features of this project.

To create a fountain you will need a large, clean barrel with a lid. The one we used.

You will also need:

  1. Small stainless steel bowl.
  2. Submersible water pump.
  3. Spray paint and primer.
  4. Angle and discs for metal.
  5. Drill and drill bit for metal.
  6. Manual water pump.

Features of creation

The sequence of actions that my husband performed is as follows:

  • Place the pool bowl face down in the center of the barrel and mark where you want to cut the hole.
  • It will be necessary to take into account the particular shape of the bowl and outline the cut line in accordance with these features.
  • Use the grinder circle to walk along the marked line. Be aware that sparks will fly. Therefore, it is important to take safety precautions when using power tools.
  • Clean the pool bowl from dust and paint the barrel to your taste. We immediately used a primer to cover up the blue color. And then a second layer of spray paint was applied on top. Since we decided to choose white, it was impossible to do without a primer.
  • Once the paint is dry, the container is ready to turn into a fountain.
  • We would love to use a solar water pump, but couldn't find one, so we installed an electric one. Since the water needs to circulate deep inside the barrel, we added a piece of flexible tubing and connected it to the pump.
  • They placed the pump inside the barrel, and the other end of the tube was brought out through a hand-held water pump. If there is no such pump, you can fill the water through a PVC pipe.
  • We stenciled our house number on the front panel of the barrel.

Beauty and benefits

Looking at our fountain, it’s hard to believe that it could have remained a simple barrel. Thanks to the skillful hands of my husband, this container turned into a magnificent source.

Guests of our house enjoy spending time at the fountain, and our whole family can no longer imagine how we could do without this source of relaxation and tranquility.

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If you live in a private house, try creating such a fountain. It will give you a lot of pleasant impressions.

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Source: https://fb.ru/post/diy/2020/1/17/177283

Do-it-yourself cutting of plastic, wood, and drywall with regular paper

Today, plasterboard is widely used in construction and renovation. You can work with this material yourself. However, you should first find out how to cut drywall so that no difficulties arise during the repair process. Below are the basic ways of working and the tools you will need.

Cutting tools

How do you cut drywall? To cut it, there are special devices that

First of all, you need to mark the sheet of drywall so that you can cut it straight. This is done using a tape measure, a simple pencil and a long ruler.

Several tools can be used to cut the material. So, how to cut drywall:

  • hacksaw for metal;
  • construction knife;
  • jigsaw.

In rooms with high humidity, moisture-resistant plasterboard is used. It differs from ordinary material by the presence of antiseptic additives in its composition. Some people have a question about how to cut moisture-resistant drywall. It is not much different from regular material. It can be easily recognized by its green color. When cutting it, you can use the same tools. Let's tell you in more detail how to work with each of them.

The best way to cut drywall

A hacksaw for metal differs from the one used to saw wood because it has a thinner blade

A construction knife with a sharp double-sided blade can easily cut a thick sheet of drywall. To make the edge of the sheet even, you should first draw a marking line and attach a metal ruler to it. An incision is made along it with a knife. If the drywall is thin enough, you can replace the construction knife with a regular stationery knife, which is used for paper.

A jigsaw is convenient for making shaped cuts. When working with drywall, it is recommended to purchase files with fine teeth, which are used for metal.

How to cut drywall correctly

There are several useful tips that will make your work easier:

  • Drywall is a flexible material. To avoid breaking it during operation, you need to place the sheet on a stable, flat surface.
  • When cutting a large sheet, you should do it gradually.
  • There should be no moisture in the workplace, otherwise the material will become wet and unsuitable for use.
  • Which side you cut the drywall from is not so important. However, it is best to make the cut on the surface on which it will be attached to the wall.
  • When cutting the profile, do not worry about uneven edges. They will subsequently be covered with a sheet of drywall.
  • When working with the material, you should understand that it can crumble a lot and create dust. Be sure to protect your eyes and respiratory system.

Cutting along straight lines

First you need to lay the drywall on a flat horizontal surface and

Some people think that they can do it just fine without a ruler. However, you should not neglect it. It is quite difficult to make an even cut without it. Of course it is possible, but you will have to take the time to get a neat edge. With a ruler, everything is done much faster.

When the cuts become deep enough, a sheet of drywall should be placed on its edge and tapped on it from the back side. Typically, several weak blows lead to a break in the drywall sheet along the line. Now all that remains is to cut the cardboard layer with a knife.

Shaped cutting

There are situations when you need not a straight cut, but a curved or round one.

They need to work slowly, drawing clearly along the intended lines. The saw should be narrow with small teeth. It must work at high speed. If you cut carefully, the edge will be smooth.

If you don't have a jigsaw, you can use a hacksaw or a construction knife and a hammer. Make deep cuts strictly according to the markings. Place the drywall on a flat, recessed surface so that it sits underneath the hole you are cutting. Now hit this place with a hammer. After the unwanted part falls off, turn the drywall over and cut off the excess paper.

Edge processing

When drywall is cut, its edges should be slightly aligned so that there is no

The final stage of preparing the material includes its fascia. To do this, you need to cut off a few millimeters of gypsum from each edge (about two-thirds of the sheet thickness). The chamfer is removed with a plane or knife at an angle of approximately 45 degrees.

After installing the drywall, all gaps between the sheets of material must be filled with putty. When the seams are dry, you can begin painting the surface or wallpapering it.

How to cut a profile

Drywall sheets are attached to a special profile.
It is made of metal for maximum structural strength. How to cut a profile for drywall ? You can cope with this work using:

  • hacksaws for metal;
  • jigsaw;
  • metal scissors.

It is not recommended to use a grinder at home because it produces a lot of sparks. Metal scissors will be quite sufficient. They are able to easily cut iron without creating unnecessary debris and shavings.

The profile can be cut into small pieces. Once the drywall is attached, it will not be visible. The main thing is to screw the profile well to the wall or other surface to ensure the strength of the entire structure.

Working with drywall is quite simple. Due to this, it is in great demand for interior decoration. Now that you have learned how to cut drywall, you can independently change your apartment beyond recognition without spending money on professional finishers.

source: .ru

This very effective method will certainly be of interest to many home craftsmen. Using regular paper, you can easily saw even hard materials such as wood and plastic. And most importantly, the cut line is very smooth and thin. For high-precision work, such an invention is simply irreplaceable.

Necessary materials

To create our cutter, you will need the following:

  • Grinder (but can be installed on a drill, screwdriver or sharpening machine);
  • Plain sheets of paper (plain white office paper, A4 format).

Product creation process

To begin with, we need to take sheets of paper, a couple of pieces will be enough. We put them together and align them. Then cut in half using scissors.

The next work will be related to drawing. You can take an ordinary compass and draw circles on previously cut sheets. Then cut it out with scissors. But here you can simplify your task a little. Using a special cutting compass, you can eliminate the issue of drawing a circle. We will need to cut out three circles.

Next, we take regular paper glue pencil and glue our blanks together. An important nuance: when gluing sheets of paper, they can shrink and waves form on them, but on cut out circles, such a tendency is not observed.

Let's wait a little until the glue dries and proceed to further manipulations. In the center of the circle, you need to cut a hole so that it can be installed on an angle grinder. Our cutting disc is ready.

Now we install it on the grinder, all the manipulations are the same as with a regular diamond disc. Let's start testing our product.

It cuts plastic, PVC pipes and other similar materials like butter. The situation is exactly the same with wood. Drywall is a little harder to saw, but the paper disc does the job.

The only thing worth considering is the fragility of this technology. But for solving small problems associated with sawing something, our paper disk is extremely irreplaceable. In addition, this attachment is perfect for drills and screwdrivers; we can say that it is universal.

Important: when working with power tools, be sure to use eye and respiratory protection.

source: izdoski.com

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Source: https://good-health4you.ru/stati/rezhem-obychnoj-bumagoj-plastik-derevo-gipsokarton-svoimi-rukami.html

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

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.

Methods for cutting a circle from thin metal

Metal circles

Metal can be thin or thick and durable, so a variety of tools are used to cut it.

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The choice of materials and cutting technology also depends on what diameter the circle is needed and how even it should be.

Using a jigsaw

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

The work is carried out in several stages:

  • First, the thickness of the metal is determined and the appropriate saw blade for the electric jigsaw is selected.
  • Before cutting a circle in metal with a jigsaw, the outline of the circle that will be cut is drawn on the working plane.
  • Using a drill and a drill (with a diameter of eight to ten millimeters), a hole is cut out from which work will begin.
  • A jigsaw saw blade is placed in the resulting gap and cutting continues according to the intended drawing.

Cutting using this tool does not take much time and effort. Moreover, using a jigsaw you can get a circle with perfect edges. But this tool is used only for working with metal of minimal or medium thickness (for example, 2 - 3 mm).

Using an angle grinder

The grinder is used when working with thin metal. You can create a round hole with this tool by following these step-by-step tips:

  • Before cutting a circle in metal with a grinder, markings are made so that its contours are clearly visible.
  • Along the entire length of the intended drawing, short sections are cut with a grinder disc, which will eventually be connected.
  • The figure will look more like a polyhedron than a circle. Therefore, after cutting is completed, the product is processed and cleaned until the edges become sufficiently even and smooth. You can also use a grinder for processing. If the circle has a wide diameter, you can sharpen the contours with a large disk.

When processing a cut circle using a grinder, you should be careful that the disk is inside the hole and, at the same time, 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 and a marker.

First, using a ruler, set the required width of the compass connector 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.

So that they are clearly visible during the work, they should be drawn with a marker.

Application of cutting torch

A circle in medium-thick metal can be cut using a gas cutter. The work takes place in several 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

Welding machine

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

It needs to be adjusted to the highest current level.

Then the burning arc is placed against the contour and held there until a hole is formed.

Then you just need to slowly move it along the drawing until you get an even circle.

But the most important thing is to correctly adjust the power of the tool.

For example, if metal about four millimeters thick is used, a device operating at about 150 amperes is required. If the metal is thicker, the power of the tool will be greater.

To speed up the work process, it is better to use thin electrodes. However, they burn out quickly and need to be replaced. Because of this, there will be a need for frequent heating of the metal, since during the replacement of the electrode it will have time to cool down.

How to cut an even circle from metal with a cutter is shown in the video:

foxremont.com

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

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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.

Read also

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 .

Read also

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how to cut a circle with an angle grinder video

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Metals and their processing
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