How to cut a circle in metal. Cutting a profiled sheet and metal tiles

19th December 2022

Six tasks for the bromatic milling cutter

Hand cutter for wood. truly a universal machine. In skillful hands, he is able to replace most of the machine park of a well.equipped carpentry workshop. If we take into account that the price of a hand cutter is quite affordable for each home master, and interchangeable mills are sold both sets, and individually, the need to have such a universal tool in its arsenal is obvious.

Specific techniques of work, characteristic only of a manual milling mill and impossible on “large” machines, are also available. The question is interesting and capacious, so you should consider it in detail.

What is a milling mill and why it is needed?

A manual milling cutter is a power tool that is an electric motor with a tsang for installing a cutting tool on a shaft. A platform or base, a kind of desktop, which can move along the guides and is fixed in a given position, is structurally combined with it.

Using the platform, cutting depth is installed. There are two handles on the sides, for which the machine is held in the right position or fed to the processed part.

The milling cutter is designed for cutting parts from different materials:

Array of wood;
Wood-cutting plate, including laminated woody stove;
Wood.fiber plate;
Wood.fiber plate;
Aluminum, duralumin;
Soft plastic.

With the help of a hand cutter, different types of material processing can be performed. These include the following operations:

Milling of the recesses of various shapes. grooves, nests, grooves and other elements;
Profile of edges. the creation of shaped (curly) surfaces, milling quarters;
Milling of special structural elements. recesses for hinges, locks, handles, spikes and nests for them;
Pruning of curved and complex edges of furniture details or special elements.

To ensure the accuracy and cleanliness of the cut in the design of the milling, there are a lot of configuration and adjustment elements. With their help, the following

Change in the speed of rotation of the shaft;
Setting the depth of immersion of the cutting organ;
Preliminary setting of depth for quick change of cutting mode.

Important! For serial production of large volumes of a hand cutter is not suitable. Use it most rational only for household purposes or in small workshops engaged in small.scale manufacturing products to order.

Ways to cut a circle of thin metal

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

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

The use of a jigsaw

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

First, the thickness of the metal is determined and the corresponding saw canvas is selected for an electric lobby.
Before cutting the circle in the metal with a jigsaw, the circuit circuit is planned on the working plane, which will be cut out.
Using a drill and a drill (in the diameter of the component from eight to ten millimeters), a hole is cut out from which work will begin.
The saw blade is placed in the resulting gap and the cutting continues according to the planned drawing.

How to Cut a Round Hole in Sheet Metal with Tin Snips or avaiation Snips Part 2.The Sheet Metal Kid

Cutting using this tool does not take much time and effort. over, with the help of a jigsaw you can get a circle with perfect edges. But this tool is used only to work with the metal of the minimum or medium thickness (for example, 2. 3 mm).

The use of corner grinders

Corner grinder is used to work with metal of small thickness. A round hole can be formed with this tool, following such step.by.step tips:

Before cutting the circle in the metal of the corner grinder, marking is carried out so that its contours are clearly visible.
In the entire length of the scheduled drawing, short segments are cut out with a disk of corner grinder, which will ultimately combine.
The figure will be more similar to a multi.line than a circle. Therefore, after the end of the cutting, the product is processed and cleaned until the time, until the edges become quite even and smooth. For processing, you can also use an angular grinder. If the circle has a wide diameter, you can turn the contours in a large disk.

When processing a cut circle with an angular grinder, you should be careful so that the disk is inside the hole and, at the same time, is located in the same plane with a working sheet.

Cutting a circle in thick metal

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

At first, with the help of a ruler, the necessary width of the compass of the circul is set so that it corresponds to the required diameter of the circle.

Then, on the metal plane, the central point of the circle is determined.

The contours are outlined from it with the help of a circul.

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

The use of a gas cutter

The circle in metal of medium thickness can be cut using a gas cutter. The work takes place in several stages:

The circuit circuit is planned.
The instrument burner is lit.
The burning torch is regulated.
Neatly and slowly with a torch is carried out according to the drawn drawing.

This method can cut a hole in the metal, which has a width of about four or five millimeters.

Application of the welding machine

If there is no gas cutter in the home arsenal, you can use the welding machine.

It needs to be adjusted to the highest current level.

Then the burning arc is substituted to the contour and is held on it until the hole is formed.

Then you just need to slowly lead it in the drawing, until you get an even circle.

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

For example, if metal is used with a thickness of about four millimeters, you need a device operating at a power of about 150 amperes. If the metal is thicker. there will be more tool power.

New idea on how to perfectly cut a circle steel plate

To speed up the process of work, it is better to use thin electrodes. However, they quickly burn and need to replace. 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.

About how to cut a flat circle of metal with a cutter is shown at

Noticed a mistake? Highlight it and click Ctrlenter to inform us.

Combined methods

The next method for cutting a circle from the material can be called combined. Not only milling machine, but also other simple tools will be used here. In some cases, the use of the tool can even exclude work with a milling.

Set of tools

For such work, you will need a set of tools and materials. Get everything at once to make it at hand:

electric jigsaw;
ordinary milling machine;
nails;
a hammer;
wide screwdriver or chisel;
sandpaper;
pencil;
compass;
A construction small knife;
ruler;
electric drill.

Now you can go to work. Given that in this case you will have to configure everything yourself, it is important to make the necessary measurements and markings. First, decide on the diameter of the future hole. It is impossible to make it very different from the size of the milling. After that, on the material where the hole will be cut out, make the contour of the future circle, for which you need to use the compass.

Self.tapping and milling screws

Circuit cutting circuit with a nail.

Working with a milling gun involves a fairly rigid and reliable adhesion to the working surface. Therefore, an important point is fixation. For this, nails and screws are used. First, a self.tapping screw is driven into the center, and a clove is driven to an arbitrarily selected point along the contour of the hole. Next, the distance between the hats of the screw and the nail is measured, after which you can connect the heads with a rope or bar, as shown in the diagram, of course, it will be much more convenient to work with a hard mechanism than with a rope.

After that, a wound is made on the contour for the future cut. To do this, you need to force a nail in a circle with force, pressing it well on it. When a sufficient opening is obtained, it will be possible to finish cutting with a milling. After the end of the work, do not forget to process the edges with sandpaper, since with such work very often they are not quite perfect.

Jigsaw, nails and chisels

The next option is how to cut a circle is the use of an electric jigsaw. Here you will not encounter great difficulties if you select the saw correctly in advance. It can be of different thicknesses, which can largely affect the final size of the cut circle.

If the material where the circle is cut is thin, then you can do with one jigsaw, having previously outlined the circle with a circul and marking its middle. But with a large thickness of the material after a jigsaw, you may need to complete the work by a milling.

The last method is based on the use of simple nails. It is necessary to take two nails, one of which is driven in the center, and the other is pulled on a rope along the radius, then cuts in a circular motion. This is similar to the first way when the work ends with a milling. But with a slight thickness of the material, you can do without it.

The contour of the future circle can be closed even by a regular chisel or a sharp construction knife. First make a circul a circle, and then take a knife with a knife along its contour. This will be a little to praise the material.

You can do in two ways. The first is to finalize the circle with a milling mill, the second is to pierce it with a hammer. The case of a milling mill is more correct if the material is quite durable and is not poured enough. But working with a hammer is good if the material is poured almost without problems.

So, the main methods of how to cut a circle with your own hands using a milling cutter, as well as partially without it, are considered.

It is best to work with standard dimensions when nothing needs to be customized and invent.

Electric

If you need to cut a circle in a sheet of metal, it is worth using an electrician. It works quite quickly, so you will receive a neat hole in a matter of minutes. Among the shortcomings of the equipment are the noise and the possibility of the accommodated edge when processing profiled sheets.

It is necessary to use saws with small teeth;
It is necessary to choose a reciprocating mode;
It is necessary to control the slope of the cutting part;
Fast failure of consumables.

A circular saw

Sometimes a circular saw is used for metal cutting. If you work with corrugated board, then the equipment must be included at low speeds. Otherwise, you can damage the polymer coating. For work you will need a partner who will hold the sheet. Among the advantages of this tool, one can highlight that the work is performed without heating, respectively, the protective coating on the profiled sheet you will not damage. It is best to use an aluminum circle.

To establish fast work with a circular saw, you need to prepare a pattern of plywood. The groove is not cut out in this sheet. This will be a kind of workpiece that allows you to save a galvanized or polymer coating on the sheet. An excellent tool for cutting metal is a two.disc saw. She, unlike corner grinders, leaves no torn edge and works much quieter. Unfortunately, not every master has a similar tool.

Locking and loops

For inserting loops and locks into the wooden door, many special devices have been developed, on which a submersible milling mill is installed.

These devices are quite expensive, so the masters try to make them with their own hands. For example, inserting loops with a milling cutter without a template is a rather troublesome thing. But this process is noticeably simplified if you make a special simple template. How to do this, you can find out from this video.

The locking of locks into the interior doors occurs in 2 stages: first a wide groove is formed under the front plate of the lock, and then a deep groove is selected for the castle case. To form the seat of the lock case, the following actions must be performed.

Take a direct groove cutter with a diameter of 0.5 mm larger than the lock bar.
Put at the milling cutter about 3 mm (depending on the thickness of the plate).
Attach parallel emphasis to the sole of the device.
Attach the lock plate to the end of the door leaf and circle it with a pencil. Find the center of the door edge and draw a fishing line for a trimmer through it (along the canvas).
Install the milling cutter on the end of the door and specify the milling cutter, then fix the emphasis in this position.
Turn on the unit, immerse the cutter into the doorbell to the established depth and profiles this area along the entire length. As a result, you get a wide and shallow groove under the front plate of the lock.
By applying the castle to the resulting depression, note where the beginning and end of the deep groove will be.
Next, you should choose a cutter (straight groove) with such a diameter that it is a little more than the thickness of the corps of the smalled lock. Also, its shank should be sufficient length so that this mill can be made by a groove 2-3 mm deeper than the height of the lock case.
Squeeze the equipment in the tsang of the aggregate.
Put on the unit the maximum depth of the equipment immersion sufficient to insert the castle body. This is done using a depth regulator.
Turn on the unit and drill to the entire depth at the beginning of the marking. Repeat the drilling along the entire length of this site, placing holes as close as possible to each other.
When the entire site is worked out, raise the cutter slightly so that the upper part of the equipment of the equipment leaves the groove (by 1-2 mm) and carry out milling, moving the unit forward and backward. After several passes, the cutter can be deepened and again perform the above operation. As a result, you will receive a deep groove with a flat bottom and even walls.

Sample of grooves and quarters

To choose a groove for the plate of the blanks or its edge (end), you can use parallel emphasis, as when inserting door locks. But you can make a special device that facilitates the process, if you need to select grooves in a large number of identical wood parts. What does the groove device look like, shown in the following figure.

This device is set up simply:

The unit is installed on the site of the device;
The whole structure is superimposed on the workpiece;
Using parallel guides, the straight groove cutter is centered on the markup;
After setting up the depth of equipment immersion (usually several passes are required), the grooves are manufactured.

To choose a quarter in a wooden workpiece, use a groove cutter with a bearing.

As a guide for equipment, the edge (end) of the workpiece serves. The instrument is clamped in the unit tsang, after which the height of the immersion is set and the quarter is selected in the usual way.

The choice of a quarter is not the only function of this equipment. With its help, you can select a groove along the edge of the workpiece and make a downted board. The depth of the groove is regulated by the change of stubborn bearings of various diameters.

For the manufacture of a dodgy board in large volumes, you need to fasten the milling cutter to the table.

How can you cut a circle with a jigsaw?

Plywood and to a lesser extent other sheet materials, such as a wood-cutting plate or a focusing-brown plate, has a significant decorative potential. If you have a fairly simple tool and certain skills, you can cut from plywood almost anything you want. But so that the details obtained as a result of such threads look quite presentable, the master should have several tricks in stock. It is about them that we will talk in our article. Curivoline sawing is difficult only at first glance. Starting to work with sheet materials, many masters have only an idea of how to perform a cut in a straight mowing fishing line. Therefore, the question of how to cut a flat circle from plywood can be at a standstill. Indeed, a regular or disk saw with the task of not managing.

Cutting tips for plywood

Cutting from plywood has several nuances that the master must be taken into account:

Firstly, you can cut out only by dry material. High humidity leads to an increase in the resistance of plywood, therefore, with excessive effort, either the veneer begins or the saw will break.
You need to change the saw or cutting canvas immediately after the first signs appear that the teeth have swept.
If we cut out of plywood using an electrician, then to obtain cleaner edges the main braid cutting fishing line should be placed along the veneer fibers. But it is easier to work with hand files across the fiber: there will be slightly larger chips, but less the risk of pinching the file or its departure from the intended mowing fishing line.

Read what can be done from the electrimmer

Peel for rough work: the edges of the product will need to be ground with a file

Advice! Turning drawings for cutting from plywood to the workpiece, try to place the template so that the removed elements fall into areas with defects: knots, chips, spots, etc.D.

Key rules

In order for the processing process to be simple and fast, it is necessary to follow the basic key rules of work:

In order for the edges of the plywood to be even, it is better to saw along the canvas.

You can only work with dry material, since humidity increases the resistance of the material, as a result of which the veneer can begin to be spaced;
It is necessary to change the cutting canvas immediately after the manifestation of the first signs of clouds of cloves;
It is better to work along the fibers of the material, so the edges will be more even;
With a manual jigsaw you need to cut across the fibers of the veneer.

In order for the work to be safe, it is necessary to adhere to the following recommendations:

firmly fix the sawing table and a file in the frame;
The jigsaw should be with good and well.mounted handles;
You should not press too much on the jigsaw, trying to “help” it, this will only lead to acceleration of the ditches of the working canvas;
Direct and long cuts are best done with a wide canvas, so the process of cutting will go faster;
It is always necessary to see the markup, so the sawdust from the sawn material must be removed with your hand, in no case do not blow out, since they can get into the eyes.

Compliance with these simple rules will help you learn to be a newcomer to cut circles with a jigsaw and facilitate his work.

Nazadka for a hand cutter for cutting a flat circle

Work work is quite multifaceted, and sometimes you never know what you will face with the next order. This is the peculiarity of the work of the red-reducer. Therefore, the more devices the master has in the arsenal, the more chances to make the part quickly and efficiently.

Nazadka for the milling tool is not a new instrument. This is how the manufacturers of the tool do. But it is not very cheap, and it is sometimes not easy to find the right one. Fortunately, our domestic masters come up with various devices that completely replace standard. We want to introduce one of these today. This is a circular nozzle for a hand cutter, which is easy to do with your own hands.

The tool required for manufacture:

Manual milling cutter with a straight cutter;
Drill or electric screwdriver with a set of drills and nozzles;
Jigsaw;
Electric welding;
corner grinder;
Sandpaper.

We plan a segment of plywood by verifying the dead points of the circul. The first is the center of the milling platform, the milling place of the cutter. Here you need to drill a hole with a diameter equal to the size of the cutter. The second is the needle of the circul located on the metal plate.

We determine the position of the first point by placing a milling cutter on the plywood, outlining the circle of its platform, and making a hole with a milling cutter.

Next in the middle of the plywood segment, draw a fishing line for a trimmer. Its length is equal to the radius of the circle obtained after processing with a milling.

Retreating a centimeter from the middle, draw two lines. These are the borders of the groove for the circular plate. We make the ends of the groove semicircular.

We fix the plywood with self.tapping screws on the desktop. We put the milling cutter to the depths slightly exceeding the thickness of the metal plate. We also put a restrictive bar for processing on a flat line. We start processing from the location of the milling cutter.

Having reached the opposite end, we return to the starting point. You may have to go through this trajectory several times until you get a clean groove free from the remnants of the veneer.

We uncover the plywood, and turn it over to the opposite side. We put the cutter to a depth a little less than the thickness of the plywood and strictly in the center of the groove made. We carry out a milling cutter from the starting point of the immersion axis to make a through groove equal to the size of the cutter. The finished groove is cleaned with sandpaper.

Most of the plywood we will not need. Therefore, we marry at the base of the circle to the platform of the mill and at the opposite end several labels forming the lines of our circul.

We mark the circuit circuit, and cut it with a jigsaw. Zausenets after sawing are easily removed with sandpaper.

We mark the metal plate by the size of the groove for it. Cut the corner grinding, grinding and staring the edges. We seek the plate to go freely in the groove, on the faner.

At the edges of the plate we make 2 holes: one under the clamping bolt with a lamb (5-6 mm), the second-under the needle of the circul (2-3 mm).

We scald the bolt with the needle in opposite planes. It is most convenient to do this on a magnetic stop for welding or in a vice. A sharpened nail or rod rod is suitable as a needle.

We uncover the platform from the milling cutter, and mark it with the fasteners at the landing place of the circul. We drill them under the fasteners with a gut.

Sample of grooves and quarters

To choose a groove for the plate plate or its edge (end), you can use parallel emphasis, as well as when inserting door locks. But you can make a special device that facilitates the process, if you need to select grooves in a large number of identical wood parts. What does the groove device look like, shown in the following figure.

This device is set up simply:

The unit is installed on the site of the device;
The whole structure is superimposed on the workpiece;
Using parallel guides, the straight groove cutter is centered on the markup;
After setting up the depth of equipment immersion (usually several passes are required), the grooves are manufactured.

Simple circle with a hand mill

To choose a quarter in a wooden workpiece, use a groove cutter with a bearing.

The choice of a quarter is not the only function of this equipment. With its help, you can select a groove along the edge of the workpiece and make a shpunta board. The depth of the groove is regulated by the change of stubborn bearings of various diameters.

Read how to work with a manual circular saw video

For the manufacture of a shpunta board in large volumes, you will need to fasten the milling cutter to the table.

Special milling mill

The cutter with the speaker usually already has a nozzle for cutting circles. This is quite convenient, but far from always the diameter of the nozzles corresponds to the required diameter of the future circle. Therefore, it makes sense to improve the milling cutter a little with your own hands.

Improvement is carried out by making simple linings. To do this, prepare a wood.fiber slab and laminate. These materials will serve as layers that will hold the screw that regulates the diameter. Make the desired diameter on the materials and cut them with a jigsaw or an ordinary knife. Make sure that the templates are perfectly the same.

Now it is necessary to mount these pads to the milling. First, remove the protective casing, after which a circle of wood.fiber slab is applied, which is fixed by screws with secret heads. They are easily fastened rather. A layer of laminate is attached over this, which is also fixed with screws, but already smaller. Make sure that their heads do not peep.

During work, one important point must be taken into account. As a rule, any milling cutter has its size. Therefore, in no case should the edges of the future holes marked on the layers and mounted with screws do not match the cutting edge of the milling machine. The center of the circle and the fixing central screw should coincide perfectly, the edge with the edges of the circle should also be at the same level.

It is very important to be able to choose the right distance between the center of the cutter and the center of the installation screw. So, if you are going to cut a hole, then this distance should be slightly smaller (approximately on the thickness of the edges of the cutter). And if you need a circle itself, not a hole, then the distance is best to take a little with a margin.

Read what batteries in the battery of an electric screwdriver

So, the first way is considered. It is not so difficult to do this, to be careful and have some carpentry skills. But nevertheless, experts argue that work with standard circles that are in the appropriate Fraser nozzles is simplified several times.

Self.tapping and milling screws

After that, a wound is made on the contour for the future cut. To do this, you need to force a nail in a circle with force, pressing it well on it. When a sufficient opening is obtained, it will be possible to finish cutting with a milling. After the end of the work, do not forget to process the edges with sandpaper, since with such work very often they are not quite perfect.

Jigsaw, nails and chisels

If the material where the circle is cut is thin, then you can do with one jigsaw, having previously outlined the circle with a circul and marking its middle. But with a large thickness of the material after a jigsaw, you may need to complete the work by a milling.

So, the main methods of how to cut a circle with your own hands using a milling cutter, as well as partially without it, are considered.

It is best to work with standard dimensions when nothing needs to be customized and invent.

But if it is impossible to use these tips.

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Drill requirements

Minding is meant processing the object with a milling cutter, it stands in the engine building. The master controls work processes, it regulates the speed of revolutions and the depth of penetration into the workpiece. When working on the milling machine, the processed part moves.

When used a drill, move the device itself, which should be suitable for milling. These operations requires greater accuracy, where the main effort falls on the drive.

If it is planned to carry out small milling work in the workshop, which do not promise serious loads, a regular electrical appliance is suitable.

The principle of operation of such a tool is based on the speed of the shaft, and it provides its engine. From the functional part, the load on the established executive mechanism. drill or cutter is transmitted from the functional part.

These are the elements of the equipment, they have to perform specific actions with the material:

The cutting element is installed taking into account:

Only at high speed can you clean the item clean. On an average of 25,000 rpm, they reach a special machine. In the highest resource drill, such an indicator is 4500 units. No model can achieve the same quality as on a production milling mill, but it is not always needed in a home workshop and even at the construction site. From a manual electrical tool that transfers rotational movements to the equipment, compliance with the conditions is required:

Rotation of a shaft at a minimum speed of 1,500 rpm., It is desirable that the revolutions are regulated;
the power of mechanics with a margin of strength, since milling occurs with large lateral loads;
installation of a cartridge that will provide a reliable capture of the shank.

If you mill the drill in the wrong position, it is wrong to direct the resistance forces:

The load vector will change, which will remove the gearbox from the working condition at additional pressure on the material;
The engine will need a frequent shutdown to avoid overheating;
the anchor is deformed;
the cartridge will not withstand the influence of excessive efforts.

To cut out specialized recesses in the workpieces with different recesses, sample or gutters, you need to choose not only the drill, but also the cutting part in accordance with the configuration and width.

Design features

As mentioned above, almost every type of milling devices has distinctive features in the design. This is especially true for end varieties. But at the same time there are products with different forms of teeth.

An important element. teeth

Sharp teeth of cutters have a serious drawback

Tainted cloves behave in a completely different way. They are not afraid of frequent sharpening or enhanced work with metal. Therefore, they are more reliable and durable. For drills, and indeed for machines. this is the perfect option.

Frases. a single whole?

In addition to differences in the form, cutters are also divided into whole and prefabricated models. The first option is made from one workpiece. To avoid excessive expenses of expensive material, many small mills are made from one bar. Therefore, this approach significantly reduces the cost of the product.

Also found prefabricated models. As the name implies, the milling cutter is made separately, and then all the components are connected to each other. Most often, the case is made of cheap types of steel, while teeth are made of solid materials (most often. these are alloys). Of course, the cost of the structure increases, but thanks to this device, you can easily replace one component with another.

Sources:

https://kamuflyzh.ru/instrument-i-oborudovanie/frezerovanie-video.html
https://foxremont.com/instrumenty/kak-vyrezat-krug-v-metalle.html
https://moyafanera.ru/instrumenty/kak-frezerom-vyrezat-krug.html
https://videosort.ru/interer/kak-vyrezat-krug-v-metalle.html
https://tehnika.expert/dlya-remonta/prochaya-stroitelnaya-texnika/rabota-ruchnym-frezerom.html
https://kamuflyzh.ru/tehnologii/kak-lobzikom-vyrezat-krug.html
https://rukikryki.ru/home/nasadka-dlya-ruchnogo-frezera-dlya-vyrezaniya-rovnogo-kruga.html
https://kamuflyzh.ru/instrument-i-oborudovanie/kak-frezerom-vyrezat-krug.html
https://sdelai-lestnicu.ru/stroi-tehnika/nasadka-na-drel-dla-metalla-freza-saroska-i-koronki-dla-rezki-i-slifovki-metalla-kak-pravilno-vybrat-nabor-i-sverlit-im-metall

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