How to cut a profile pipe at an angle
Pipe cutting methods
To cut a profile pipe, also at a certain angle, you can use the following tool:
- angle grinder. angle grinder (picture above). This method is most often used for domestic purposes, as it is characterized by simplicity and availability of equipment;
- hacksaw for metal. Using a hacksaw is not difficult, but the process of doing the work is quite laborious;
The use of a hacksaw for metal for cutting a profile pipe
- electric jigsaw. To cut metal, you will need to purchase a special diamond-coated file. The work is done quickly enough;
Cutting professional pipes with a jigsaw
- special machine for cutting pipes. The equipment is most often used by professionals because of its high cost. Currently, specialists use two types of machines:
- equipment with mechanical cutting, which is performed with a cut-off wheel or a special file;
- equipment with a laser. Laser cutting is more accurate than mechanical counterparts.
Using a dedicated laser cutting machine
When choosing any method, it is important to pay special attention to safety precautions. During the cutting of the pipe, metal shavings are formed, which can damage the hands and eyes of the master, therefore it is important to wear gloves and safety glasses before performing the work.
Using a miter box
The construction miter box allows you to correctly cut the professional pipe at any angle. The device is applied in the following order:
- the profile pipe is fixed inside the device and aligned at a certain angle;
- a preliminary cut is made using the built-in hacksaw;
Profile Pipe Cutting And Welding At 90 Degrees
- the pipe is removed from the miter box and cut through the workpiece by an angle grinder. In this situation, the cutting place will be highlighted and the risk of error is reduced to zero.
The finished measuring tool has a high cost. To reduce financial costs when performing construction work, you can make an analogue of the miter box yourself. For this, a wooden frame is made with a niche for pipes and with the help of measuring tools, notches are made at different angles.
DIY miter box for cutting a professional pipe
What other ways can you use to cut profile pipes at an angle, see the video.
Application of a paper pattern
The simplest device for correct cutting at an angle, for example, for making a greenhouse, is a template made of thick paper.
To make a cut at right angles (90 °), you must:
- wrap the pipe with a thick sheet of paper and achieve full alignment of the edges;
- fix the sheet in this position;
- cut the profile tube along the edge of the paper.
Pipe cut at right angles
To cut a pipe at an angle of 45 °, it is necessary to fold a sheet of paper in half (along the hypotenuse) and wrap the pipe so as to combine the sharp ends of the resulting triangle.
Curve for cutting off at an angle of 45 °
Automatic production of a paper pattern by a computer program
How to cut a profile pipe
Profile pipes are widely used in everyday life. The material is used for the construction of greenhouse complexes, benches, tables and other garden furniture, awnings, swings and other small architectural forms. It is for this reason that it is important to know how to correctly cut a profile pipe at an angle of 45 degrees, 90 ° and so on, as well as along.
#Template to #miter #pipe. Pipe template layout
How to cut a professional pipe angle grinder
The most popular household cutting method is the use of an angle grinder. How to cut an angle grinder straight into a profile pipe? The main problem with getting the job done is correct markup.
For marking, you can use:
- tape measure, square, marker (pencil), building level. The simplest tools allow you to accurately mark the cutting angle, but during the work, the angle grinder may deviate from the specified mowing line (the equipment does not rest on stands, but is suspended, that is, in the hands of the master), which will lead to an error. For this reason, this method is rarely used;
Cutting with an angle square
- paper pattern;
- miter box.
Features of cutting pipes along
With the help of an angle grinder, you can make not only a transverse, but also a longitudinal cut of a profile pipe. How to cut a multi-profile pipe lengthwise? The work is done in the following order:
- as with cross cuts, work begins with marking. It is important to determine as many anchor points as possible on the lateral surface of the pipe in order to get the most even line;
Marking for longitudinal cuts
- to improve visibility and eliminate the possibility of getting an uneven cut, it is recommended to highlight the resulting line (with paint or masking tape);
- the pipe is fixed, for example, with clamps. If possible, you can also fix the angle grinder, as an option. using a special stand;
- the cut is gradually made along the specified mowing line.
Cutting pipe along an angle grinder fixed on a rack
A similar technology is used to cut thick-walled shaped pipes. Before performing the work, it is required to fix the pipe, which eliminates the likelihood of the workpiece breaking under its own weight.
Cutting Angle Calculation Programs
A 45 ° cut template can be obtained by folding a square piece of paper in half. To form patterns for other bevels, you will need to perform more or less complex trigonometric calculations. For those who safely left sines and cosines in high school and are not going to remember formulas, there are many programs for calculating patterns for any required angle available on the net. The program performs a calculation for a user-specified diameter and angle of cut and creates an image of the piece, which should be printed on your printer.
Important: in the print settings, select the “full size” option and disable image scaling.
How to cut along
Not often, but sometimes it is still required to cut the pipe lengthwise. You should proceed as follows:
- Carefully mark the cutting line. Use chopping line, marker or masking tape.
- Secure the pipe, next to the pipe, provide an arm support along the entire mowing line of the cut.
- Take your time, slowly moving the angle grinder blade along the cut line, keeping your hand supported, make the cut. The depth of immersion of the disc into the cut should be constantly monitored so as not to saw through the opposite wall.
How to cut a pipe at a 45 degree angle
Small diameter plastic pipes can be cut using specialized scissors.
Steel pipes can be cut with an angle grinder, but it is better to use a more accurate tool. a band saw with a turntable equipped with clamps. A tabletop disc cutter will also work.
When using a general-purpose tool, you will definitely have to use one or another rig.
How to cut a pipe at a 45 degree angle
Precision cutting machines
Band saws are characterized by high stability of the blade plane and cutting accuracy. They are also widely used in the procurement areas of small-scale and medium-scale production. They are characterized by versatility, reliability and high performance.
For private use, the Italian company MASS offers a compact band sawing unit. It is equipped with a manual clamping device and can evenly cut pipes with a diameter of up to 65 mm, as well as rolled products of any profile of the same thickness.
The rotary device allows you to set an arbitrary cutting direction from 0 to 45 °. Cutting blade speed. up to 45 strokes per minute. An economical 370 watt motor allows you to use a regular home single-phase 220 V power grid.
Oblique cut at 45 °
Cutting the end of the pipe exactly at 45 ° is possible without the use of complex tools. It is enough to use a locksmith’s ingenuity. You will need to do the following:
- Cut a piece of paper into a square.
- Fold diagonally. Learn a right-angled isosceles triangle.
- Wrap the workpiece with a sheet so that the leg of the triangle is perpendicular to the axis, and the hypotenuse forms an ascending spiral.
- Secure the sheet with tape.
- Fix the workpiece and cut along the oblique edge of the sheet. Turns out at 45 °.
Bevel cutting of pipes
There is another popular method. The end of the workpiece is immersed in a container with liquid at the required angle. You need to cut off along the border of wet and dry areas.
If you want to cut off perpendicularly, then it is better to use an old carpentry tool. a miter box.
This is a U-shaped template, in the side walls of which slots have already been made at specified angles. The pipe is abutted against the wall of the miter box farthest from the master and pressed there with a hand or a hand clamp. The hand saw blade is inserted into the corresponding grooves and sawed. If necessary, cut at a different angle, you can make additional cuts in the walls of the miter box.
Miter box for cutting pipes
Carpenters have long used a simple, but very useful device to cut the ends of rectangular, round and shaped bars evenly at an angle. A carpenter’s miter box is good for sawing off plastic or non-thick metal pipe.
You can use a ready-made one, or you can make a miter box with your own hands. Its advantage is that it can be made exactly to the size of the pipe. For manufacturing you will need:
- Cut a plank with a length of 40-50 cm and a width equal to the pipe diameter.
- Cut two boards of the same length, but wider by the thickness of the first board.
- Assemble the boards on self-tapping screws, attaching the side boards to the base so that you get a U-shaped gutter.
- In the center, mark and make vertical cuts in the side boards to the base so that a straight line drawn through them forms angles of 90, 60, 45 and 30 ° with the longitudinal axis of the structure.
- Make cuts at different angles if necessary.
It is better to make the side walls of more durable wood. this will extend the service life of the equipment.
Such a miter box not only defines and helps to maintain the correct cutting line and cut straight. It also serves as a means of securing the pipe. It is enough to hold the pipe with your hand together with the miter box. For each diameter, you will have to make a separate tooling.
Easy Way How To Cut Pipe at 45 degrees without Cut Off Machine
During operation, the slots in the side walls are also subject to wear. It is necessary to ensure that the hacksaw blade runs in them with minimal backlash. In case of wear, you can saw new slots parallel to the old ones, at least 3 centimeters away from them, or replace the side walls.
This miter box has the following advantages:
- simplicity of design and manufacture
- the ability to make tooling for any diameter and required angle
Miter box for cutting pipes
- inconvenient to work with large diameters and wall thicknesses
- binding of each rig to its own diameter
- only compatible with metal hacksaw
Large diameter pipe cutting
If you want to cut exactly a large-diameter pipe, for sewage or under the entrance to the site, use the following tools:
- Angle Grinder. An affordable, but not very secure way. A certain skill is required. Be sure to use personal protective equipment.
- Roller cutter. This is a rather complex unit specially designed for this kind of work. It is mounted on the pipeline, covering it from the outside. The pressing force of the cutting rollers is adjustable mechanically or automatically. Each diameter requires its own tooling.
- Gas cutter. The most commonly used method. The method is quite safe with sufficient qualifications of the gas welder and the observance of precautionary rules. Requires a torch, acetylene or propane cylinders.
How to cut a profile pipe at an angle
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 with the help of templates (templates) applied to the pipe, the cutting line is outlined. 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 angles. 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 the 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 we get an elbow (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). I had to measure the circumference with a “belt” and divide by π (3.1416). Enter the resulting diameter into the table.
Watch the demo
(Pictures, 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.
How to cut a pipe at an angle. marking options for round and profile pipes
When installing a pipeline, it is often necessary to cut the pipe at a certain angle. Accuracy plays an important role in this task. There are several easy ways to cut a pipe at an angle.
An incorrect pipe cut will lead to the impossibility of mounting a structure of the form that was originally conceived. For example, if you plan to rotate the system by 45 degrees, then you need to cut the pipe at 45 degrees. To complete the task, you will need marking tools and an angle grinder (you can replace it with a hacksaw for metal).
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.
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.
Method of marking with a container with water instead of a template
This marking method is suitable for small diameter pipes that are planned to be cut at a certain angle close to the edge. First you need to prepare a deep container of water. The planned angle of inclination is marked on it. Now you need to carefully immerse the end of the product in the liquid, tilt it towards the mark, and then pull it out.
As a result of such actions, a clear line of contact with water will appear on it, it must be highlighted. On it, the pipe is cut at an angle. This method is best suited for jobs where multiple striping is required.
How to cut a profile pipe at an angle
The marking of the profile pipe differs from the round one. Its manual execution can lead to significant errors. The best way to solve the problem is to create a cutting template from the same profile, but with a larger diameter.
A small section of a shaped pipe will be required. On it, using a protractor, mark an angle of 45 degrees. Now, using an angle grinder, you need to cut off part of the workpiece along the marked mowing line. The cut edges need to be sanded and defects removed. All that remains is to insert the original product into the bevel cutting template. Then you need to mark the mowing line for the cut of the larger profile. And already the pipe itself is cut along it.
The text describes how to cut a pipe at an angle of 45 degrees. When the marking has already been completed, it is recommended to use an angle grinder. With its help, it will turn out to make an even cut. You can replace it with a hacksaw for metal. It will also be possible to cut the product by welding, but experience in handling the tool is needed, otherwise there will be irregularities. “How to Cut a Pipe Straightly. Cutting Tools and Techniques”.
How to cut a pipe at an angle
Sometimes you need to cut the pipe at a specific angle. In the article, the master plumber will tell you how such operations are performed and what cutting methods exist.
Techniques for cutting pipes at an angle
Considering the methods of work. cutting straight or at an angle. one should take into account the different material of the products being processed. So, sleeves made of polypropylene or thin copper are easier and easier to cut than thick-walled steel pipes.
Small diameter plastic products are cut at the desired angle using special scissors. In this case, you can control the angle with an ordinary protractor. Plastic pipes are also cut with a conventional hacksaw with a fine-toothed blade.
It is necessary to cut metal pipes very often during the installation process. A popular tool for such cases is the so-called angle grinder. Cuts straight and at an angle with this tool.
Find out which tools can be used to cut at different angles.
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.
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;
- Apply a marker of 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.
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.
Programs for calculating cutting angles
Curve cutting technology allows obtaining different cutting angles. But to form a piece at angles other than 45º, it will already be necessary to perform mathematical calculations and, according to the calculated data, cut a template out of paper or similar materials.
True, there are computer programs designed to save the master from the production of calculations. Patterns for cutting pipes such programs are printed on a printer.
A simple calculation program created on the basis of the MS Excel application allows you to calculate and compose a pattern for almost any values of pipe diameters and required cutting angles.
All the user needs to do is enter the corresponding values into the “Outside diameter” and “Cut angle” cells. According to these parameters, a pattern will be formed that can be sent to print.
Note! The calculation of the points of passage of the curve is carried out on the basis of only two specified parameters. the pipe diameter and the required cut angle. The disadvantage of the program is that it does not take into account the thickness of the sheet of the pattern, which leads to minor inaccuracies
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.
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 a cut angle grinder.
Angle grinder stand
Metal products of round and rectangular shapes with sufficiently thick walls are conveniently cut at an angle using an angle grinder fixed on the bed.
Pipe laying and cutting procedure:
- The turning 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.
The nuances of working with a rectangular section
To perform cutting of rectangular pipes, it is recommended to prepare template cuts of the corners in advance. They are easy to make from a metal corner, having previously marked with the same protractor.
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. The 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.
In the plot. Cutting pipes with a diameter of 35 mm and a wall thickness of 2 mm at an angle of 90 ° and 45 °
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 using a pipe cutter. A wide range of BSM devices is produced.
In the plot. GR-BSM large pipe band saws
In addition to mechanical methods, thermal methods are often used, where welding or cutting machines work as a tool. For example, an autogenous gas torch or conventional welding machine (AC / DC).
With the help of such devices, thick-walled metal pipes are available for cutting. However, it is extremely difficult to obtain a perfectly smooth high-quality cut using the electric welding or gas autogen method.
Usually, after cutting by a thermal method, the products are subjected to additional processing. The cut line is leveled, the values of the required angle are adjusted. This approach is economically unprofitable, since it is accompanied by additional costs for machining.
As a rule, a thermal cutting technique is used in an industrial-production sphere. True, housing and communal services also often resort to this technique.
Thermal cut is also used for working with plastic material. There are devices. thermal guillotines. The sharp thin blade of such devices is heated to a high temperature, after which a cut is performed.
Thermal guillotines support bevel cutting, and this is their advantage. However, for work with more rigid materials than PVC, wood, chipboards, these devices cannot be used.
In the plot. How to cut a pipe at a 45 or 90 degree angle
In the plot. How to make a saddle for tapering pipe
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.
Continuing the topic, see also our review of How to make a saddle for an angled pipe entry