Using a container with water
What if we are dealing with a small-diameter pipe, and we need to cut the pipe at an angle somewhere near the edge? A deep container filled with water will come to the rescue. Before starting work, you need to calculate the angle of inclination and make a mark on the container. Then we just have to carefully lower the edge of the pipe into the water and tilt it towards the mark on the container. We remove the pipe, mark the line of contact with the water, and boldly cut along the markings. This method is optimal when marking a huge number of pipes. A ready-made template from a container of water will speed up the process of our work.
Layout by means of a sheet of paper
One of the easiest ways is to mark the corner with a piece of paper. We fold the square sheet strictly diagonally. We take the pipe and wrap it in a folded page so that the edges of the diagonals are opposite each other. So, on the smaller side of the page, we ended up with an angle of 45 degrees. We take any marking tool and mark the place of the future pipe cut along the mowing line of the page. So that the markings are not accidentally erased, it is possible to use narrow tape. This method of marking is convenient for a long pipe of a huge diameter, and the cut of which is somewhere in the middle.
How to cut a pipe at 45 degrees
When installing the pipeline, it is quite often necessary to cut the pipe at an angle. over, the angle should have just the degree that is needed for the structure. If the corner is made incorrectly, it is unrealistic to make exactly the dimensions of the pipeline that were supposed to be made. For example, the pipe will rotate 45 degrees during installation, therefore, you need to know how to cut the pipe at 45 degrees. To do this, we need marking tools, an angle grinder or a hacksaw for metal.
Computer program to help
I would also like to consider a method of marking by means of a computer program. This is an extremely difficult way for those who are not used to working with a computer. It requires knowledge of a PC, the availability of programs for scans and drawings. We start with the execution of the drawing indicating the size of the circle and the slope. We make a so-called virtual template.
After that, using the printer, we print the image on a sheet of paper. The larger the pipe diameter, the more markup pages there will be. We cut out all parts of the drawing with scissors and with the help of adhesive tape, glue them. The finished template is applied to the pipe, and we make markings along the edge of the paper. This marking method is considered one of the most correct. If there are no such programs on the computer, it is possible to use the Internet. It is possible to download a pattern for marking on the net. In addition, it needs to be printed on a printer and cut out. We wrap the finished piece near the pipe and make markings.
If the pipe is profiled
But, for example, we have a profile pipe, not a round one. Manual marking of a profile pipe can lead to a huge error. The best way out of this situation is to make a template for the same profile of a larger diameter. Take a small section of a profile pipe and use a protractor to mark an angle of 45 degrees. We cut off the angle grinder according to the marking and grind the edges so that during work we do not get hurt by the burrs. Then we just have to insert a profile of a smaller diameter into the template and, having made a marking, cut it off.
In this article, we looked at how to cut a pipe at 45 degrees. Using one of the methods listed above, mark up and cut. For a smoother cut, it is best to use an angle grinder. When cutting by welding, experience is required, otherwise unevenness will appear on the cuts. In extreme cases, it is possible to use a hacksaw for metal. There are a large number of different angled pipe cutting attachments on the market today, but these are expensive to purchase. It is easier and cheaper to make a template for yourself once and apply it as needed.
That is why in the video you will determine 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:
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 pass 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.
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 for cutting an angle grinder.
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 patterns.
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.
Then the following steps:
- Bend the sheet diagonally by aligning opposite corners.
- Turn 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.
- Use a marker to mark the cut along the mowing line of any of the legs of the triangle.
- Cut the pipe to the intended mowing 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.
Competently made patterns for true 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 welded seam, when connecting plastic parts, a specialized cord for soldering is used.
Precision cutting machines
Among the branded devices that could be used in everyday life to perform an angle cuts, you can pay attention to the technique of Italian production.
The Mini Cut band saw from the MASS company is a small-sized device with a hand clamp, for working not only with pipes, but also with corners, rods, and profile elements.
The machine supports setting the cutting angle from 0 to 45º. The procedure is carried out using a tape belt at a speed of 45 reciprocating movements per minute. The device is equipped with a 370 W electric motor, which is powered by a household network. Maximum permissible diameter of the cut round pipe. 65 mm.
Numerous machines with electromechanical and electrical drives have been developed on an industrial scale for pipe cutting. Technically sophisticated devices allow high precision thermal, oxygen and plasma cutting:
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 is manufactured by 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.
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, which are easier to cut with a pipe cutter. A wide range of BSM devices is produced.
Mold for cutting pipe at 45 degrees
In various situations, household-level craftsmen often come to the issue of correct marking for accurate cutting of pipe blanks at an angle of 45 degrees. Today there is a huge selection of tools, both for the domestic and industrial process of cutting pipes at any angle. The cost of such devices can be quite high.
It is proposed to consider methods of marking workpieces for cutting at an angle of 45 degrees in a domestic environment without the use of expensive professional equipment.
Marking the corner with a paper sheet
Layout on paper is one of the simplest ways to accomplish a task. A square sheet is required. It folds exactly diagonally. The resulting template for cutting pipes must be wrapped around the product so that the long side runs parallel to its section.
Then an angle of 45 degrees is formed on the smaller side. It remains to mark the line of the cut using a construction pencil or marker on a sheet of paper.
It is recommended to wrap the marking area with narrow tape so as not to accidentally erase it. This method is great for long, large pipes with a cut in the middle of the piece.
Simple tooling for cutting
Round and rectangular metal products with fairly thick walls are conveniently cut at an angle using simple electromechanical equipment.
The cutting element of such a tool is a cutting disc or a circular saw attached to the shaft of an electric motor. In turn, the electric motor with a cutter is part of the entire equipment, which includes a work table, a pendulum support, a clamp.
To install the pipe at the desired angle with its subsequent fastening, a conventional clamp and two metal corners are used. One corner (short) is attached to the base of the swing mechanism. the pendulum. The second corner (long) is in a free state.
Pipe laying and cutting procedure:
- The swivel mechanism sets the required cutting angle (for example, using a ruler and protractor).
- The found position is fixed with clamping screws.
- A pipe is laid between the short and long corners and pressed with a clamp screw.
- Voltage is applied to the electric motor.
- By applying a slight pressure to the cutter blade, the pipe is cut in the right place.
The advantages of this technique are fast work, accurate cut, the ability to process a large number of pipes in a short period of time.
Disadvantages: restrictions on use in domestic conditions, increased noise, work with pipes of only small and medium diameters. In addition, the process of cutting with equipment is carried out stationary at a distance from the installation site, which is not always acceptable.
If you are going to make a copper pipeline at home, then you will need special pipe cutters, we advise you to familiarize yourself with the selection rules.
Using a computer program
To implement this method of marking pipes for cutting, you will need a computer with special programs. First, you need to draw up a drawing, which indicates the transverse dimensions of the product, as well as the planned cut angle. Need to get a virtual template.
Print it out on a printer. And here it is worthwhile to understand that the larger the pipe diameter, the more sheets will be required to print it. Then you need to carefully cut out the details of the drawing from all pages and glue it, it is best to use stationery tape for this. It remains to attach the template to the pipe and apply the markings.
This method of solving the problem is highly accurate. All the necessary programs can be downloaded from the Internet, they are free to download and use. It will also be possible to find a template for cutting pipes at an angle. All that remains is to print and cut it. To carry out the marking, the piece is simply wrapped around the pipe.
Cutting at 90 degrees
To cut straight across a round pipeline or a rectangular metal profile, use a sheet of ordinary paper. They wrap the workpiece in such a way that the edges of the cardboard sheet coincide, then it is fixed on the part using tape or glue. an angle grinder draws a narrow line next to the edge of the cardboard sheet, after which it is evenly deepened until it is completely cut.
There is an option to cut a metal profile or a round pipe using a template, putting on an evenly docked element with a huge inner diameter.
Tips: how to cut a pipe at an angle
If a high cutting accuracy is required, it is better to contact a specialized workshop, where it can be done at any angle on a pipe cutter or the required squeegee can be made. Bends with angles of 30º and 45º can be purchased in the construction markets. The bends should then be butt welded to the pipes of the required length.
There are computer programs that allow you to make sweeps and patterns for cutting cylindrical parts at arbitrary angles. The pattern is drawn on paper using a printer.
You can get a special miter box that allows you to cut at any angle, but it’s not cheap. You can make it yourself. Two steel corners with a shelf width of more than the pipe diameter are attached to a wooden board in parallel. One is the workpiece support. In the second, 2 holes are drilled for bolts and nuts are welded. Bolts are used to fix the workpiece. A cut is made in the board at the desired angle, which is built using a protractor.
How to make square tubing miter joint. Welding Steel tube corner joint
If the listed methods do not suit you or the work needs to be done urgently, you will have to use materials at hand.
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, with all this it should be taken into account that a straight cut at the required angle, as opposed to 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 allows you to obtain the highest density of the connection.
If the pipe is profiled
But, for example, we have a profile pipe, not a round one. Manual marking of a profile pipe can lead to a large error. The best way out of this situation is to make a template from the same larger diameter profile. Take a small section of a profile pipe and use a protractor to mark an angle of 45 degrees. We cut off the angle grinder according to the marking and grind the edges so that we do not get hurt by burrs during work. Then we just have to insert a profile of a smaller diameter into the template and, having made a marking, cut it off.
Easy Way Cut Steel Pipe In 45 Degree Without Cut Off Machine
We cut a profile pipe at an angle in a homemade device In this article, we looked at how to cut a pipe at 45 degrees. Using one of the above methods, mark up and cut. For a smoother cut, it is best to use an angle grinder. When cutting with welding, experience is required, otherwise unevenness will turn out on the cuts. As a last resort, you can use a hacksaw for metal. There are many different angled pipe cutting attachments on the market today, but they are expensive to purchase. It is easier and cheaper to make a template for yourself once and use it as needed.
I must say right away that if you are going to make a plumbing or heating system from polypropylene or metal-plastic, it is better to immediately buy a pruner. It is inexpensive, but it greatly facilitates the work.
In all other cases, you can use improvised means.
Some tips for cutting pipes
When in a household, it is required to cut to connect the pipeline at different angles along a different axis. The main inventory for these works is a universal angle grinder and discs for metal.
Pipe marking and cutting
Manual pipe cutting tool
To perform such a tool marking the correct angle, you must also have the following additional tool:
- Scraper for metal;
- Angle Grinder;
- Cutting disc;
Tool for cutting pipes at an angle How to cut a pipe at an angle
It is not difficult to make a measuring tool for cutting pipes. To do this, cut a segment 20-30 cm long from the profile blank. By means of a goniometer, at any end of the segment, it will mark an angle of 45 degrees. Next, cut off the profile with the angle grinder. The resulting template needs to be tested for accuracy. In case of deviations, file the measuring tool. Using such a hand-made marking tool, the process of cutting pipes is much easier, especially with a large volume of pipes. To mark, it is only necessary to place the cut profile pipe in the made device and draw the correct angle with a scribe. During the marking process, the length of the products is controlled. Next, you need to cut the pipe clearly along the line marking using an angle grinder. It is worth noting that at first the pipe is notched along the diagonal marks on both sides, then the straight, marked mowing lines are cut. These 45 degree pipe cutting templates will save you a lot of time and money.
Cutting profile pipe at 45 degrees
Cutting the pipe at an angle. a typical task in the manufacture of metal structures. There is often a need to cut the pipe at an angle. The cut pipes are welded at a predetermined angle to the walls of the structures, from which two-link bends are made.
Before cutting, using patterns (templates) applied to the pipe, outline the cutting line. For each diameter and each angle of the selected diameter, a separate unique piece (template) is required. The proposed Excel table allows you to obtain dimensions for constructing a pattern for marking pipes of any diameter, cut at any angle. Enter in the yellow cells of the table the outer diameter of the pipe, the cutting angle, the length of the segment and you will instantly receive the ordinates and abscissas of these points.
Transfer these points to paronite or cardboard and smoothly connect them together. The pattern (template) is ready. For the convenience of manual construction, the user himself enters the length of the segment on the X axis (multiples of 5, 10 mm) and receives up to 40 construction points, depending on the length of the segment and the length of the piece. You should get a curve like this.
When using a table with a macro, there is no need for manual construction. The program itself draws a sweep based on the entered data. It remains to print and cut it. The allowances on the printout are added by the user.
When making a knee, the cutting angle should be equal to half of the knee angle.
An example of determining a cutting angle for making a 135 degree elbow (9045). Not to be confused with a sharp 45 degree knee! Formula: 135/2 = 67.5. We cut the pipe at an angle of 67.5 degrees, we get two pieces of pipe with cutting angles of 67.5 degrees, we connect them along the mowing line of the cut with reference to a common generatrix, we weld and get a knee (67.567.5) at 135 degrees.
In the process of work, I made the following observation. When working with large diameters, the fabricated piece when wrapped around the pipe was clearly shorter, did not overlap the entire pipe, there was a gap of 20-30 mm.
The Gostovsky pipe diameter was specified correctly, and the pattern is shorter. In my opinion, this error is caused by the fact that it is impossible to press the piece tightly against the pipe and the outer diameter of the pipe has increased (rust, dirt). Had to “girdle” measure the circumference and divide by π (3.1416). Enter the resulting diameter into the table.
Watch the demo
(Figures, descriptions, formulas were taken from the book by I.Kh. Brodyansky “Marking of welded fittings of pipelines”, 1963)
Upon successful payment, you will immediately receive a link to download the worksheet.
Laser cutting of a profile pipe will be one of the highest quality and less labor-intensive, in comparison with mechanical processing options. This is a professional equipment that gives an absolutely even cut, which is not possible with any mechanical tool. Thanks to laser equipment, you can easily cut at an angle of 45 degrees, which is very difficult when using a torch or angle grinder.
Profile cutting to size:
- The maximum thickness of the metal layer is 6.5 mm;
- Maximum part radius. 80 mm;
- Maximum material length. 3-3.5 m.
The photo shows a laser machine that automatically cuts metal parts.
Methods for cutting a profile pipe
When building or laying a pipeline, it is often necessary to deal with cutting shaped pipes. And the difficulty lies in making the cut perfectly straight without burrs. We will look at several basic methods and devices for cutting metal parts perpendicularly and at an angle.
Abrasive disc machine
In fact, this is the same angle grinder, which is simply fixed in a special frame for convenience. This tool is quite traumatic, but it allows you to cut at an angle of 90 or 45 degrees. Before using such a device, several nuances must be taken into account, otherwise, in the process of work, you can get injured:
- The machine must be well fixed on a horizontal surface;
- Cutting the profile pipe should be done only with glasses or a special mask;
- The movement of the tool itself must match the rotation of the metal disc;
- Before work, the metal pipe must be securely clamped in a vice.
Working with an angle grinder is difficult enough even for an experienced craftsman, so do not grab the tool if you first hear about it. In more detail, cutting metal parts is demonstrated in the video.
Basic cutting methods
The method of cutting metal products with a square section largely depends on the type of fixture selected. Therefore, we list the types of tools thanks to which you can get the job done:
- Hacksaw machine;
- angle grinder with bed;
- Flame and laser installation;
The first two types of tools involve mechanical cutting of products, and a gas-flame and laser installation. thermal. Let’s consider each device for cutting metal products in more detail.
Features of 45 degree cutting
Cutting a profile pipe at an angle of 45 degrees is fraught with some difficulties. Indeed, with manual marking, large errors can be made, due to which, during the assembly of elements, a mismatch may occur. To cope with the problem, it is best to make a small template from a part with the same section.
- Using a protractor, measure an angle of 45 degrees on a small piece of pipe;
- Using a machine with an angle grinder, make a cut and grind the edges of the workpiece;
- Now insert a profile with a smaller diameter into the finished template;
- Make a markup, focusing on a homemade goniometer.
Cutting a profile pipe at an angle can be carried out with tools for both thermal and mechanical processing of parts.
This tool consists of a handle, a mobile frame, a cutter and an adjustment screw. Before cutting, the product is fixed with a vice and then cut. A mechanical machine for cutting a profile pipe is quite convenient to use, but has several disadvantages:
- During operation, the torch may become very hot;
- Mechanical cutting takes a lot of time;
- The edge of the cut pipe will have burrs that will need to be sanded.
Fireless cutting of metal parts involves the use of tools that often give a not too clean cut. After work, the edge of the part must be sanded to remove all burrs. Equipment for thermal cutting is free from this drawback, however, it is used mainly in manufacturing enterprises.