How to cut a pipe at a 45 degree angle

Large diameter pipe cutting

When a large diameter pipe needs to be cut, a variety of special attachments and tools can be used. This may be required if, for example, a pipeline needs to be repaired.

  • Bulgarian. The use of a grinder is justified from the point of view of the availability of the tool and the relative cheapness of work. However, in this case, you should not count on high productivity, in addition, carrying out work in this way is fraught with considerable risk.
  • Roller machine. Such attachments are also often referred to as pipe cutters. In fact, such a device is the same grinder, but more adapted for this type of work. The machine includes a special bed, where the cut-off element is fixed, as well as a cage with installed cut-off rollers, which do the direct work. It is important to understand that each machine must be purchased for specific tasks, that is, for the size of the pipes.
  • Gas cutting. This option is most often used when working with large diameters. Cutting is carried out using a high intensity flame, and the waste generated is blown out by the pressure of the gas. The method can be considered the most practical and effective.

pipe, degree, angle

Gas cutting in this case is the fastest option.

There are other options for the implementation of the task, such as the use of plasma, waterjet or laser cutting, but in private use they are practically not used.

How to cut thin-walled pipes

Another type of pipes are thin-walled products. They are usually made from non-ferrous metals such as aluminum or copper. Cutting thin-walled pipes is more difficult, since there is a high probability of deformation of the element. In this case, you can use some kind of filler, such as sifted sand. As a tool, you can use a grinder, a hacksaw for metal or a special machine. It all depends on the specific situation.

Cutting metal pipes is a rather laborious, but do-it-yourself process. At the same time, work with round pipes does not fundamentally differ from cutting a profile pipe. The main thing to remember is that when performing work, you must follow safety rules.

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Techniques for cutting pipes at an angle of circular cross-section

Round pipes of different diameters are cut at an angle when the direction of the pipeline is changed, while it should be borne in mind that a straight cut at the desired angle, unlike a rectangular section, will not lead to a tight joint of the edges. Therefore, special patterns are used, in which the marked edge has a curved shape, which makes it possible to obtain a high density of the connection.

How and how to cut the pipe. exactly at 90 °, at an angle of 45 °

When working with construction or plumbing tasks, you need to know how to cut the pipe straight with a grinder. In the article, we will consider quick and easy ways of how to properly cut a pipe with a grinder so that the result is perfect.

Thanks to this video, you will learn how to cut a pipe at an angle of 45 or 90 degrees using a computer program:

Cutting a shaped pipe using a pipe cutting device at forty-five degrees:

Conclusions and useful video

The video shows the calculations and shows a workshop for cutting a pipe at angles of 45º and 90º:

For each individual installation case, you can choose the most convenient and less costly cutting method. The specific choice depends on the material of the pipe, its diameter, wall thickness.

Using simple marking methods, you can get a fairly accurate angle at which you want to cut the workpiece. At the same time, referring to a complex calculation technique, it is possible to cut at non-standard angles with high accuracy.

Do you have any useful article information? Do you have any questions while reading the material or find controversial points? Please write in the block below.

Final part

Do not think that a grinder with a cutting disc is a tool used exclusively for dismantling metal structures and does not require accuracy in work. Rather, the opposite is true. LBM requires the utmost concentration of attention and accuracy in work. This is a rather traumatic tool, and therefore, when working with it, you should not forget not only about the correct markup, but also about safety requirements.

Only accurate calculation and cutting will allow perfect alignment of pipes at an angle

HouseChief hopes that the methods described in today’s article will help novice craftsmen in performing various repairs. All questions that have arisen during the reading process can be asked in the comments below. In the same place, please describe your experience in cutting pipes, which may be useful to other readers.

Finally, we suggest watching a short video that will tell you a little more about the methods of working with a grinder.

Making a template for trimming a metal profile

If you need to cut a large number of pipes, you can make a template from a metal profile of a larger diameter on a paper sheet in the above way. The angle of inclination is checked with a protractor or a construction square. in this case, the two edges of the trimmed parts of the template are connected.

When working on the part to be cut, a template is put on in the right place and pressed tightly, the markings are applied with a sharpened scribe when tracing the template contour. The part is cut in several passes with a gradual deepening of the groove.

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Techniques for cutting pipes at an angle of circular cross-section

Round pipes of different diameters are cut at an angle when the direction of the pipeline is changed, while it should be borne in mind that a straight cut at the desired angle, unlike a rectangular section, will not lead to a tight joint of the edges. Therefore, special patterns are used, in which the marked edge has a curved shape, which makes it possible to obtain a high density of the connection.

How to cut 45 degree pipe with high precision at home

When carrying out work on the installation of gas or water mains, it is often necessary to change the direction of the line, while the pipeline is cut and then welded at the desired angle. Most often, the direction changes by 90 degrees, and the question arises. how to cut the pipe at 45 degrees in order to accurately connect the joints when welding.

It is possible to cope with the problem with cut edge angles of 45 or 90 degrees with the appropriate knowledge and techniques that will help save not only time, but also materials during work. At other angles of rotation, it is impossible to solve the problem with a ruler and a sheet of paper. you will have to call computer equipment for help.

DIY pipe miter box

Using a template is not very convenient. you have to make a cut along the line, holding the grinder on weight, which leads to large errors. If you have a welding machine, you can make a simple miter box. guides for the grinder’s disk, preventing it from going to the side.

How To Cut a 45 Degree Angle On a Pipe

For this, a previously made template is used, in the side of which a hole is drilled and a nut is welded. When working, a homemade miter box is put on the profile, a bolt is screwed into its nut and the device is pressed against the profile surface.

A grinder with a disc for metal makes a cut, slightly pressing the disc to the side surface of the device. It is clear that with prolonged work, the edges in the miter box are gradually grinded, and although the process occurs simultaneously on all edges, over time, some errors will appear.

Cutting at 45 degrees

Usually, in order to turn the pipe by 45 degrees, fittings are used, bends with a 45-degree angle of rotation, made of the same material as the pipes themselves, if the pipes are steel, then the turns are welded from steel. For HDPE pipes, there are electrically welded or cast bends at 45 degrees (note that it is almost impossible to find compression fittings with such an angle of rotation in Russia).

But, if you still need to cut a round pipe made of steel or various types of plastics, then for this you need a piece for cutting pipes at an angle, the shape of which is calculated manually or by machine. The task is greatly simplified if at an angle of forty-five degrees it is necessary to cut a metal profile of a square cross-section.

For a quick cut, you can use a regular sheet of paper folded diagonally to mark the surface for the future cut. Using folded paper, proceed as follows:

  • carried out on the straight surface of the profile in the place where the cut is made, strictly perpendicular to the line;
  • apply a diagonally folded sheet of paper to the side surface with the sharp end to the line so that the top edge of the paper triangle is flush with the top side of the metal profile.
  • draw a line with a pencil along the side of the sheet at an angle of 45 degrees, after which the paper corner is applied to the other side and outlined with a pencil (it is better to use a thin marker).

For sawing, you can use a grinder with a disc for metal, drawing a thin line at the beginning along the marking, and then gradually deepening it until the edges are completely separated.

When working with a grinder, the following factor must be taken into account. if the edges are completely cut, the disc can be damaged by an acute angle, which will lead to its failure, and in the absence of protection on the grinder, even to injury to the employee. Therefore, it is advisable not to cut the corner edges to the end, but to leave a narrow groove and then break off, subsequently grinding the protrusion.

Paper mold for pipe

To perform a relatively accurate cut, you can use a simple technique, where a regular sheet of paper acts as a kind of pattern. For example, A4 printer paper is well suited for creating a pattern.

Previously, the sheet is marked out under a square using a ruler. The size of the diagonal of the square must be equal to the circumference of the pipe to be cut. The excess parts of the sheet are cut off.

The simplest way to get a pipe marking line is to produce a 45 degree cut. A regular sheet of paper is used, which is superimposed on the pipe body in the cutting area

Then the following steps:

  • Bend the sheet diagonally by aligning opposite corners.
  • Rotate the resulting triangle so that the hypotenuse line is perpendicular to the pipe axis.
  • In this position, wrap the tubular surface with paper, aligning the extreme points of the hypotenuse together.
  • Apply a marker of the cut along the line of any of the legs of the triangle.
  • Cut the pipe to the marked line.

This way it is quite convenient to mark and cut pipes at an angle of 45º in the range of diameters from 32 to 63 mm. For better markup convenience, it is recommended to use thick, but soft paper. Paronite and similar materials can also be used.

How to correctly choose a pipe cutter for plastic pipes and how to use it in practice is described in detail in our article.

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Competently made patterns for shape cutting of pipes allow you to make cuts with extremely high accuracy. In this case, the gap between the prepared workpieces is still not excluded. In the connection of metal pipes, it is “closed” with a weld; when connecting plastic parts, a specialized cord for soldering is used.

Miter box for cutting pipes

There is a simple tool, often used in everyday life, mainly for working with wood. It is called. miter box. So, the same device is suitable for cutting pipes, and at different angles. The miter box is commercially available, but if you wish, you can always make it yourself and adjust the structure to the required pipe diameter:

  • Take a wooden board with a width equal to the diameter of the pipe, 400-500 mm long.
  • Take two more boards of the same dimensions, but in width increased by the thickness of the first board.
  • From three boards to assemble a structure in the form of an inverted letter “P”, where the first board is installed as a base.
  • In the central part of the structure, mark a rectangle, the two sides of which run along the inner boundaries of the side boards.
  • Divide the rectangle with diagonals and along the lines obtained on the upper edges of the side boards, make cuts down to the base.

In this way, a template for cutting at an angle of 45º is made. But with the help of a protractor, you can mark almost any angle and make cuts for a pipe cut for a specific angle. The advantage of the miter box is that the tool is suitable for repeated use. Working with the tool is permissible until the walls of the slots are worn to such an extent that they can provide high cutting accuracy. It is recommended to make the walls of the tool from a material of higher strength than wood.

This looks like a possible design of a miter box. a device thanks to which it is also possible to cut pipes at different angles.

However, a miter box, as a rule, is convenient to use for cutting pipes of small diameters and with a small wall thickness.

The advantages of the method are obvious. simplicity, ease of making a tool (miter box), cost-effectiveness, versatility.

The disadvantages of working with this type of equipment are the need to adjust the dimensions of the miter box to the pipe diameter, provided that an accurate cut is made. That is, for each pipe you will have to make your own instrument.

Also, using a miter box, you can only cut a pipe with a hacksaw for metal or pruning shears (for plastic products). This tool is not suitable for working with thick-walled metal pipes under the cut with a grinder.

Industrial models (for example BSM)

There are dedicated industrial machines for precise bevel cutting operations. A good example: devices manufactured under the BSM brand. The machine tool manufacturer is the German company Rexinger. True, the BSM series machines are designed exclusively for working with polypropylene pipes of sufficiently large diameters. Supports processing of PP, PVC, PE, PVDF products.

Industrial machine for cutting pipe products made of polymers. Designed to work with products of large diameters, but has equipment for processing pipes from 50 mm.

The machine cuts in a wide range of angles

The cutting tool of the machine is a band saw, thanks to which a cut is made at angles from 0 to 67.5º. The precision of the process is ensured by a laser cut recognition.

Despite the configuration of the device for products of large diameters, a special table can be used, with the help of which pipes of small diameters (50-200 mm) can also be successfully cut. A wide range of BSM devices is produced.

Cutting the pipe at forty-five degrees or another angle

In various jobs, home craftsmen are sometimes faced with the need to mark and cut pipes at forty-five degrees.

There are a large number of industrial devices for cutting pipes at different angles, but the cost of such devices is quite high. The article will consider ways of marking pipes for a 45-degree cut at home, without using expensive devices.

Marking and cutting a profile pipe

At first glance, marking a profile pipe seems to be a fairly simple matter. However, rounded corners when manually marking out will give a serious error. For this reason, it will be more convenient to make the simplest device for marking a profile pipe. Cutting a pipe made of metal at 45 ° with this device is greatly simplified.

A forty-five-degree pipe cutter is a U-shaped steel section cut at a 45-degree angle. The dimensions of the profile are selected in such a way that the pipe to be marked can fit freely into it. To make this device, you will need the following tools:

  • Protractor
  • Scraper for metal
  • Angle grinder (grinder)
  • Cutting disc
  • File.

Such a device for cutting pipes is made quite simply. It is convenient to use for cutting a large number of pipes, for example, for welding a door frame made of corrugated board.

A workpiece with a length of about 20-30 centimeters is cut from the profile. Using a goniometer, an angle of 45 degrees is marked on one of the ends of the segment. After marking, using a grinder, the profile is cut. On the received template, it is necessary to check the accuracy of the angle. If necessary, the template is finalized with a file.

Cutting a pipe at forty-five degrees with this template is greatly simplified. The pipe blank is inserted into the template and marked with a scribe. When marking, it is necessary to check the length of the workpiece. After that, the pipe is cut according to the marked marks using a grinder.

Marking and cutting pipes at a circular angle

When it is necessary to cut a round pipe at an angle of 45 degrees, the tool discussed above may not work. In this case, the pipe is cut at 45 degrees using paper templates wrapped around the workpiece. Pattern for marking can be downloaded here.

Such patterns are printed from special computer programs. Also on the Internet you can find and print ready-made patterns for the most common pipe sizes. Whichever method of cutting pipes is chosen, it is necessary to monitor the accuracy of marking. The accuracy of the cut depends on it.

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Pipe cutting at an angle of 45 and 90 degrees

If you need to cut the pipe at an angle of 45 degrees, which is more often required when laying water, heating pipes. Steel, cast iron pipes that are cylindrical in shape are often used. In installation work, rectangular or shaped pipes are used. However, you should properly cut the pipe with a grinder, so that you can easily connect it later. Therefore, you should carefully mark the pipe.

Some craftsmen try to mark the place of the cut using a tape measure, but we warn you that the result is likely to be negative. And for a positive result, consider the following professional recommendation.

Take a sheet of paper or cardboard, preferably A4, fold it diagonally and wrap it around the pipe where you plan to cut it evenly. The edges of the paper must be in perfect alignment with each other. And the side of the paper that is closer to the end of the pipe was perpendicular to the axis. Then mark the cutting line in a circle.

#Template to #miter #pipe – Pipe template layout

If you need to cut exactly at an angle of 90 degrees, then solve the problem quickly using paper or masking tape again. Wrap around the pipe so the ends match. Make even lines and saw off.

How to cut a profile pipe straight?

Masters advise using a square when cutting a profile pipe. To do this, apply the square in turn to the sides, and turn and mark with smooth movements. After action, fix the pipe and cut. Prepare yourself a template that will come in handy in the future and save time. It is better to perform the action with a grinder, so the cut will be smoother.

How to cut a cast iron pipe?

When working with a cast iron pipe, keep in mind that it is a brittle material. Therefore, we will point out a way with which it will be possible to cut such a metal without damage.

Before starting work, make notes for the cut, just like with steel pipes. Place a piece of wood for support. Work the grinder around the circumference of the pipe, making small cuts. Then take the chisels, insert into the groove and hit hard with a hammer. Note that bakelite-based cutting discs are used to cut cast iron pipes.

If you don’t have a grinder at hand to cut a cast-iron sewer pipe or other purposes, use a metal hacksaw, chisels or special pipe cutters.

How to cut a gas pipe?

Cutting a gas pipe is dangerous, so it is best to entrust it to professionals. But if you are confident in your strength, then to cut the metal take a grinder, welding, hacksaw, gas welding.

  • Shut off the gas riser before work. Then release the rest of the gas from the pipe. To do this, set fire to the gas in the burners and wait for it to go out.
  • After the steps taken, cut. Using the welding method, the metal base burns out when exposed to high temperature. The result is fast and effective. But remember that cutting or rooting gas pipes again requires experience.

How to cut a pipe straight with a grinder?

When working with construction or plumbing tasks, you need to know how to cut the pipe straight with a grinder. In the article, we will consider quick and easy ways of how to properly cut a pipe with a grinder so that the result is perfect.

Methods for cutting large diameter pipes

There are a number of reliable tools available for cutting large diameter pipes such as sewers. Next, we will consider some of them in detail:

  • The grinder is an inexpensive and affordable option, but it is considered not the safest when working with such materials. Once you decide to use this method, then be careful and use protective equipment.
  • A roller machine (pipe cutter) is such a tool adapted for such manipulations. The device is attached and material removal begins. The clamping force is adjusted using mechanical devices. It is important to note that the models of the machine differ in shape, so consider the ratio of dimensions to the pipe before use.
  • Flame cutting is the most popular option for cutting large diameter pipes, sheet metal. The cut occurs due to the action of a high-intensity flame, the metal melts and leaves the cut zone with a gas flow. This method is convenient and effective.

How to cut a pipe lengthwise correctly?

A quick way to cut a pipe lengthwise using a grinder:

  • Focus on the markup.
  • Use for such a case the painter’s thread, which has found distribution when marking walls.
  • Before starting work, fix the pipe and with small movements, carefully saw the pipe.
  • Better not to rush, but delicately and slowly process the parts of the pipe, so the cutting disc will not jump off the marking lines. Remember safety.

How to cut thin-walled pipes?

Thin-walled pipes are made of non-ferrous metals: aluminum, copper. Such work should be done delicately, since there is a high probability of deformation of the material. Fillers such as sand are used for cutting. Actions can be carried out using a grinder, a special machine.

Summing up, we emphasize that cutting metal pipes is a complex process, but anyone who wants to enhance it can enhance it. With the advice of a professional, you can easily cut pipes in a variety of sizes and materials. Also remember to use a file or emery paper to clean the edges of the pipes after cutting. And the most important thing to remember when starting such actions is safety precautions. Wear a special suit (casing), mask or goggles when getting started. Hands should also be reliably protected from sparks, so use thick gloves.