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.
Using 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.
Pipe cutting methods
To cut a profile pipe, including 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 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;
Miter cuts with a miter box
- 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.
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 fix the angle grinder, as an option. using a special stand;
- the cut is gradually made along the specified mowing line.
Pipe cutting 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 excludes the possibility of the workpiece breaking under its own weight.
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.
Performing a longitudinal cut
To make a high-quality even longitudinal cut, you can use a simple device in the form of a metal corner. It is securely fixed on a flat wooden surface with screws and the pipe is pressed against it with a heavy load. An angle grinder makes a longitudinal cut of the pipe top, slightly resting the disc on the surface of the angle.
The corner can be attached to the pipe with clamps and a cut can be made along the upper wall of the corner in the same way.
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.
How to cut a cast iron pipe
The main difference between cast iron and ordinary steel is its high brittleness and large wall thickness; its accurate cutting must be performed in the following sequence:
- A marking corner is drawn using a template using a scribe, for
supports under the part put a wooden board or board.
- Perform an angle grinder shallow cut of the surface along the entire perimeter.
- Further, the groove is deepened in several passes until the two parts are completely separated.
Some tips for cutting pipes
Households sometimes require cutting to connect the pipeline at different angles or axially. The main tool for these works is a universal angle grinder and discs for metal.
For industrial use
In industry, large-diameter pipelines are used to transport liquids and gases, therefore, pipe cutting machines have a large weight and dimensions. There are also manual pipe cutters of a rotary and clamping principle of operation. In the first case, the cutting rollers rotate along a circular surface using a repositionable handle, in the second version, the cutting is carried out by arcuate plates, which gradually shift when rotating.
Paper mold for pipe
One of the most common ways to make a pattern for pipes with a round surface is a method for which you will need a lined sheet of paper, a ruler and a pencil. To obtain a paper pattern, proceed as follows:
- Draw a circle on a piece of paper with the diameter of the pipe to be cut, break the circle into 16 equal segments, each time dividing large segments into two equal.
- Measure the circumference by multiplying its diameter by the number Pi, equal to 3.14. Lay this size on both sides of the axis of the circle in equal segments, each of which is divided into 8 equal parts.
- Draw from segments on a straight line vertical mowing line up and horizontal from the points set on the circle.
- The places of their intersection are connected with a smooth line and, as a result, a template applied to the paper is obtained, which is cut out and glued to the trimmed surface. For trimming, it is better to use an angle grinder with a small diameter disc. the surface will be curved and when using a large disc, the error will increase.
Cutting at 45 degrees
Usually, in order to turn the pipe by 45 degrees, fittings are used, bends with a 45-degree rotation angle, 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).
MJ350 45° Angle Cutter for Aluminum profile
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 a 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 mowing line so that the top edge of the paper triangle is flush with the top side of the metal profile.
- draw the 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 an angle grinder with a disc for metal, first drawing a thin line along the markings, and then gradually deepening it until the edges are completely separated.
When working with an angle 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 angle grinder, even to injury to the worker. 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.
Collar insert
In order to obtain branches of metal pipelines in the form of tees, a collar insert is used, for which it is necessary to cut the edge of a round pipe adjacent to the walls of another at a right angle. To implement the method, proceed as follows:
- cut the edges of the workpiece at right angles as described earlier.
- On a round end surface, four equidistant points are marked with a marker, located at angles of 90 and 180 degrees to each other.
- The circumference is measured, the resulting diameter is divided by 3. From two diametrically located points, the resulting distance is laid, after which these points are connected to two other smooth arc, drawing the fishing line with a marker.
- An angle grinder is cut along the markings and the semicircular segments are separated, after which the part is ready for welding. With minor inaccuracies in the pairing, it can be sealed with a sledgehammer, attaching it to the round surface of another element.
Paper mold for pipe
One of the most common ways to make a pattern for pipes with a round surface is a method for which you will need a lined sheet of paper, a ruler and a pencil. To obtain a paper pattern, proceed as follows:
- Draw a circle on a piece of paper with the diameter of the pipe to be cut, break the circle into 16 equal segments, each time dividing large segments into two equal.
- Measure the circumference by multiplying its diameter by the number Pi, equal to 3.14. Lay this size on both sides of the axis of the circle in equal segments, each of which is divided into 8 equal parts.
- Draw from segments on a straight line vertical mowing line up and horizontal from the points set on the circle.
- The places of their intersection are connected with a smooth line and, as a result, a template applied to the paper is obtained, which is cut out and glued to the trimmed surface. For trimming, it is better to use an angle grinder with a small diameter disc. the surface will be curved and when using a large disc, the error will increase.
For individual use
The following tools are used for cutting steel pipes in the household:
Manual pipe cutters. Allows you to cut round parts with an even right angle cut due to the cutting edges of the rollers. There are several types of products of this type, consisting of single rollers or a series of them attached to a chain. In everyday life, such devices are quite rare and are more suitable for professional work.
Angle Grinder. It is a universal tool for cutting any metal parts with different angles; special discs for metal are used for work, which grind off rather quickly during operation. This allows you to accurately cut a curve in the line with a small diameter disc.
Gas-burner. A fast and effective method of cutting metal surfaces with a hot flame jet; disadvantages include melted edges, which complicate further welding. It is difficult to cut a product using a gas burner according to a paper template, which will burn, and if a fishing line is drawn, then it will practically not be visible in a stream of flame.
Electric pipe cutters. To work with pipelines of small diameters, you can use compact electric pipe cutters, according to the principle of operation, resembling an angle grinder. The device is called a roller machine, during operation, the part is installed on the bed and rotates on roller guides, from above its surface is cut by an electrical device. The main difference between the pipe cutter is a metal disc, which has a special durable spraying for cutting metal.
DIY pipe miter box
Using the template is not very convenient. you have to make a cut along the mowing line, keeping the angle grinder suspended, which leads to large errors. If you have a welding machine, you can make a simple miter box. guides for the disc of an angle grinder, which do not allow it to go to the side.
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. an angle 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 long-term work, the edges in the miter box are gradually grinded, and although the process occurs simultaneously on all edges, some errors will appear over time. Therefore, it is better to make the device from hard wear-resistant metal in order to increase its service life and obtain a more accurate tool.
For industrial use
In industry, large-diameter pipelines are used to transport liquids and gases, therefore, pipe cutting machines have a large weight and dimensions. There are also manual pipe cutters of a rotary and clamping principle of operation. In the first case, the cutting rollers rotate along a circular surface using a repositionable handle, in the second version, the cutting is carried out by arcuate plates, which gradually shift when rotating.
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, the pipe of the angle grinder should be cut correctly so that it can be easily connected 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 cut line in a circle.
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 produce an angle 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. Run an angle 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 do not have an angle 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 the strength, then to cut the metal, take an angle 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.
Electronic pipe cutters. When working with pipelines of small diameters, small-sized electronic pipe cutters are used, observing the principle of operation resembling an angle grinder. The device is called a roller machine, during operation, the part is installed on the bed and rotates on roller guides, from above its surface is cut by an electronic device. The main difference between the pipe cutter is the iron disc, which has a special long-term spraying for cutting metal.
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.
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.
For industrial use
In the industry for the transportation of liquids and gases, pipelines of a huge diameter are used, therefore, pipe cutting units have a large weight and overall dimensions. There are also manual pipe cutters of the rotary and clamping principle of action. At the beginning, the cutting rollers rotate on a round surface with the help of an adjustable handle, in the 2nd version, the cutting is carried out by arcuate plates, which are evenly shifted during rotation.
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.
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 cutting template 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.
Pipe marking and cutting
The very process of marking the cut-off workpiece seems to be quite a simple matter. But it should be noted that the rounding made during the manual marking process will create an irreparable error after cutting, which will lead to inconsistencies and the formation of defective products. In order to eliminate such defects, it is required to make a simple tool for clear marking of the profile parts. At the same time, cutting products at an angle of 450 is much easier.
A regular 45 degree U-shaped steel section will be a reliable tool for accurate pipe cutting. In this case, the size of the profile for the ruler must be selected so that it becomes possible to easily position the cut profile pipe in it.
Manual pipe cutting tool
To perform such a tool marking the correct angle, you must also have the following additional tool:
Profile Pipe Cutting And Welding At 90 Degrees
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.