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.
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.
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
not how smooth 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
Like a Bulgarian
cut in
a Circle
, without any adaptations 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.
It needs to be adjusted to the current level.
Then the burning arc is placed against the contour and is not held against it until a hole is formed.
Then you just need to slowly move it along the drawing until it is impossible to make an even circle.
However, the most important thing is to correctly adjust the power of the tool.
Nettle, if metal about four millimeters thick is used, you need a device operating at a power of about one ampere. In this case, the metal is thicker - which simply means that the power of the tool will not be enough.
To speed up the work process, it is better to use thin electrodes. However, they burn out quickly and do not need to be replaced. Because of this, there will be a need for frequent heating of the metal, since in time for replacing the electrode it will have time to cool down.
What actually happens, how to cut an even circle from metal with a cutter, is presented in the video:
Select it and don't press CtrlEnter to let us know.
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.
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 fine 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.
Hole cutting
On the surface we draw a circle - the outline of the hole that we will subsequently cut through the angle grinder,
The trick is that we put not a new, but an old, worn-out cutting wheel on the grinder.
DIY electronics in a Chinese store.
It has a small diameter, so when cutting it touches the metal with a smaller area. With its help you need to cut a small recess along the contour of the hole. It is enough to go literally 1/3 of the thickness of the steel. Since the erased disk has a small diameter, the insertion will be smooth, without the formation of serifs outside the circle.
Having scratched the outline of the hole, a new cutting disc is installed on the grinder. They already cut out a square through window in the center of the circle. It should not reach the boundaries of the drawn circle by a few centimeters, maybe more.
Now you need to remove the remaining part of the metal between the outline of the round hole and the border of the square cut out in it. To do this, use a grinder to split the excess steel into sectors 1-1.5 cm wide. If the metal is thick, then when making cuts it is better to keep a small step.
Next, along the edge of each sector, blows are applied with a hammer through a chisel or punch.
The metal is bent and then returned to its original position with blows from the reverse side. It needs to be broken like a wire. It's not difficult at all. If the diameter of the hole allows, then the metal can be bent with pliers. It is necessary to break out all segments sequentially.
If the worn cutting wheel had a small diameter, and when broken, the metal dissolved into narrow segments, then the resulting hole will have the shape of an almost perfect circle. It doesn't even need to be sanded. A similar method can be used if necessary to make a hole in a tile. Only in this case will the segments be broken with pliers immediately, without bending back and forth.
How to make a circle out of iron
MiscellaneousHow to make a circle from a pipe with your own hands
Surely many home craftsmen have repeatedly faced the question: how to bend pipes of small diameter along a certain radius to give them the necessary rounded configuration. On an industrial scale, special equipment is used for these purposes, but in this case the question is different: how to bend a pipe without a pipe bender at home?
Bent elements from profile pipes
DIY pipe bending
In order to help the reader understand this issue, this article will discuss several methods of bending round and rectangular pipes made of various materials. These skills will also come in handy when building a panel house.
There will also be detailed instructions that describe step by step all the stages of performing this operation using a set of common household plumbing tools.
Bench vice equipped with a pipe bender
Method 1: bending steel pipes
Steel itself is a fairly rigid material, but when heated to a high temperature it becomes more plastic, which allows steel products to be given almost any desired shape. In order to bend an arc or circle from a steel round pipe with your own hands, in addition to the usual plumbing tools, you will also need a gas torch.
- Secure the steel pipe in a vice. In order not to crush the walls, you need to first insert a metal rod of a suitable diameter into it at the clamping area.
- Using a gas torch, heat the area of the future bend until the characteristic color of the metal appears bright red.
- Using short, gentle blows of a hammer, give the heated part the required configuration, controlling the bending radius according to a pre-made template.
After cooling, the finished part will retain its shape, and the metal will again acquire its former rigidity and high mechanical strength.
Before heating a ferrous metal pipe, it must be heated red hot.
Note!
The described method cannot be used for bending galvanized steel pipes, since the zinc will burn out when heated to a high temperature, as a result of which its anti-corrosion properties will disappear.
Method 2: bending pipes made of non-ferrous metals
Non-ferrous metals, such as copper or aluminum, have high ductility, however, due to insufficient strength, the opposite walls of the pipe may not withstand multidirectional loads (compression and tension), resulting in their rupture or collapse.
In order to evenly distribute local internal stresses of the material, a simple technology is used for bending thin-walled pipes made of non-ferrous metals.
- Before bending an aluminum pipe, you need to select a suitable steel spring. Its diameter must correspond to the internal diameter of the pipe, and its length should not be shorter than the length of the bent section.
- Having tied a strong long wire to the spring, insert it inside the pipe, placing it approximately in the center of the intended arc.
- Carefully clamp the part in a vice, without applying much force, so as not to crush the thin walls of the soft material.
- Use a gas burner to heat the future fold to the temperature at which the paper begins to smolder.
- Bend the heated part to the required radius, holding the free end of the pipe with a gloved hand.
- Remove the spring from the internal lumen of the pipe after the part has cooled, using the remaining end of the wire.
Spring for bending thin-walled pipes made of soft materials
Note!
Non-ferrous metals have high thermal conductivity, so when working with a heated part, care should be taken to avoid burns.
Method 3: bending metal-plastic pipes
There are special tools for working with metal-plastic water pipes, but its price is not worth buying a plumbing pipe bender for your home tool collection.
Metal-plastic pipes are quite flexible, so they can be given any desired configuration.
You can bend a metal-plastic pipe with a large radius with your hands, performing short smooth movements and gradually giving it the required shape and bending angle.
To make an arc with a small radius or a 180° turn, you can use a more complex, but at the same time effective method.
- Cut thin copper wires in such quantity that they can completely fill the internal lumen of the metal-plastic pipe.
- Insert them inside so that they completely fill the pipe at the bend and at the same time all their ends remain outside the end of the pipe.
- Give the future part the required shape, applying quite a lot of force with your hands, and then remove all the wires one by one from the internal lumen of the pipe.
The photo shows the simplest manual pipe bender
Note!
It is recommended to use copper wires without PVC insulation as a filler, because it can become wrinkled and make it difficult to remove them further after finishing work.
Method 4: bending profiled metal
Many people have thought about how to bend a profile pipe.
https://www.youtube.com/watch?v=yNYDu6XSIAw
Plastic deformation of steel and aluminum profile pipes is complicated by the presence of side edges, which are also stiffening ribs and therefore require additional effort during operation.
In order to maintain the correct profile of the final product, and to prevent creases and tears in the metal, the internal cavity must be filled with dense moving material.
Gas burner with portable cylinder
Bending profile pipes:
- Prepare two plugs for the pipe section. They can be made of wood, rubber or plastic, and must fit tightly into its internal lumen.
- Insert a plug from one end of the pipe, then completely fill the entire internal volume with sand from the second end, then insert a second plug into the other end.
- In winter, water can be used instead of sand. After filling it and installing the plugs, you need to take the part out onto the balcony until the water completely solidifies in the entire internal volume.
- After this, you can begin to form an arc using a hammer or rubber mallet, holding the part in a vice, or placing its edges on stable, strong supports.
This method can also be useful to those home craftsmen who do not know how to bend a pipe made of stainless steel or galvanized ferrous metal.
This vise is convenient for clamping round shaped parts.
Conclusion
After reading this article, it becomes clear that there are quite a lot of ways that can help a home craftsman make a plumbing part or a shaped product from metal pipes at home, even without special equipment.
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.
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.
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
cut it out of 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 2022 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 at the same time ensure 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
a jagged edge remains, which can be removed with a file or
grinder
.
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.
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 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.
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.
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:
- Before you start cutting a hole in a tile, you should mark the boundaries of the future hole on its surface.
- To make the material softer, you should soak it in water for a short time beforehand.
- 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).
- Along the cutting line, tap the groove with the back of the tool so that it is as deep as possible.
- Using pliers, break off the material, piece by piece, until you are left with an even cut along the markings.
- 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?
- Draw a round hole on the outside.
- Immediately after this, you should start cutting it out if the element to be cut is located near the edge.
- 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.
- 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:
- Mark a line that will serve as a guide when cutting.
- The grinder should be equipped with a diamond disc, which is used for the dry method.
- 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.
- 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:
- 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.
- Place a point where you want to drill.
- Drill with a rotary drill at low speed.
- 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.
For reference
We remind you that the outer diameter of the annular drill and the pipe being processed must be strictly the same. As we know, when laying water and sewer pipes, it becomes necessary to route them through various obstacles, such as walls, floors and other elements of building structures.
But before making holes for the pipe, you need to familiarize yourself with the known methods for implementing similar operations, which often affect not only the load-bearing structures of the building, but also their finishing. In the specific conditions of pipeline laying, a variety of techniques can be used, which are intended to be considered in our article.
