How to cut a 45 angle on a corner

Compare types and sizes

Framing always starts with the choice of type and size of plastic element. The table contains data about plastic corners their sizes and types for slopes:

Equilateral: 2020. 5050 mm, the length of the standard, fastened to give strength.
Not equilateral: 517 and 2025 mm, cladding of archway openings, installation is accepted on curved compositions.
T-shaped: 1210, 1810, 2010, 2210 mm, installation is necessary to hide the joints.
Detachable (a clip is present): Standard, the shelf is bent for dismantling. Easy to attach, no need to glue.

During installation, it is necessary to cut a corner to form the desired length. A sharp knife will help. If you need to cut at a clear angle will need to prepare a plane and a hacksaw for metal.

Important! Corner plastic for the color inner slopes is available in lengths of 2.6 m, 2.7 m, 2.8 m, 3.0 m.

How to make a jig for a ceiling plinth with their own hands

If you do not have such a handy tool as a chisel, you can replace it or make it yourself.

In simple cases, for example, for cutting foam plastic, the role of the jig is performed by an ordinary cardboard or a sheet of thick paper. Lay 2 parallel pieces on the cardboard and mark the planned places of the cut with the protractor. Then simply attach a fragment of the product and cut, using cardboard as a template.

If the material is wide, hollow inside, or made of such a solid material like wood, without a plane or its equivalent is impossible to do. Then proceed as follows.

  • Make a template on cardboard or heavy paper.
  • Then from any suitable material make corners for ceiling plinth. from two slats, for example. The material is inserted into the element as in a jig.
  • Then the device is placed over the stencil so that the end of the skirting board is above the design. Insert the profile into the substitute for the joiner and cut along the marks with a knife or saw.

In this case, the blade rests only in the homemade product, so when working you need to be careful.

How to tile and form a right angle?

First you need to glue the first tile and set it on the level. The trimmed edge will protrude beyond the plane of the wall.

Then immediately you need to glue the second (mating) tile on the other side of the corner. While the glue is fresh and amenable to correction it is necessary to form a beautiful right angle.

And so we gradually move upwards, row by row.

Before tiling a corner, make sure that you have a vertical wall.

Because if the walls will be at least a little tilted outward, without steps corner will not come together. And this is not very nice, believe me! And nothing you can not cover it and do not make up.

How to properly form a sharp corner?

The next step after the process of cutting the tiles to a certain degree of angle is its dignified use, as well as the organization of the right angle. To do this you need to observe the following points:

  • Using a special construction level, the first part of the tile should be evenly glued. Its trimmed edge should slightly extend beyond the base of the right angle;
  • the second tile should be glued opposite in the same way, the glue fixing period allowing you to move and adjust the adjoining tiles to achieve a tight contact.

READ How to mash a wide skirting board

Before you start tiling a corner, check the verticality of the wall. With even the lowest differences in height, the corner at the top may not come together and do not turn out even. It will be impossible to mask or seal this flaw later on.

How to cut a profile tube at an angle of 45 angle grinder

The scope of use of mashing tile at an angle of forty-five degrees has certain limitations. As a result of the cut clay on the back side, the narrowed edges of the tile become thin and brittle, so they can easily break off.

Forming right angles from undercut tiles in places where there is heavy traffic is not recommended.

The chisel for cutting pipes with your own hands

Using a template is not too convenient. you have to make a cut on the mowing line, holding the angle grinder on weight, which leads to large errors. If you have a welder, you can make a simple chair. guides for the disc of the angle grinder, not allowing it to go sideways.

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To do this, use the previously made template, in the side of which a hole is drilled and a nut is welded. When working, a homemade jig is put on the profile, a bolt is screwed into its nut and the device is pressed to the profile surface. make a cut with an angle grinder with a metal disk, slightly pressing a disk to the side surface of the device. It is clear that with prolonged work, the edges in the chisel gradually wear down, and although the process occurs simultaneously on all edges, over time there will be some errors. Therefore it is better to make the device from hard, wear-resistant metal, to increase its life and get a more accurate tool.

Making a template for cutting metal profile

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

At work on a detail cut in a necessary place a template is put on and tightly pressed, the marks are put by sharply sharpened screwdriver at outlining a template contour. The part is cut in several steps with a gradual deepening of the groove.

How to Cut 45 degree Miter without a Miter Saw

Cutting under 45 degrees

Usually in order to turn the pipe by 45 degrees use fittings, branches with an angle of 45 degrees, made of the same material as the pipe itself, if the pipe is steel, then the turns are welded from steel. For HDPE pipes there are electric-welded or cast 45 degree bends (note that the compression fittings with such an angle of rotation in Russia can not be found almost).

But if, nevertheless, it is necessary to cut off a tube of round section from steel or various kinds of plastic, then for this purpose a template for cutting pipes at an angle is needed, the form of which is calculated manually or by machine. The task is greatly simplified if at an angle of forty-five degrees you need to cut a metal profile with a square cross-section.

For hasty trimming, you can use an ordinary piece of paper folded diagonally, with which you mark the surface for the future cut. Applying the folded paper, proceed as follows:

How to cut basic 45 degree angles

  • on the straight surface of the profile in the place where the cut is made, a strictly perpendicular line;
  • put the diagonally folded sheet of paper against the side surface, with its sharp end against the mowing line, so that the upper edge of the paper triangle is flush with the upper side of the metal profile.
  • Hold a pencil line on the side of the sheet at an angle of 45 degrees, then the paper corner is attached to the other side and circled it with a pencil (better to use a thin marker).

For sawing, you can use an angle grinder with a disc for metal, making a thin line at the beginning of the marking, then gradually deepening it to complete separation of the edges.

When working with the angle grinder is necessary to consider the following factor when fully cutting edges of the disk can be damaged on a sharp corner, which will lead to its failure, and in the absence of protection on the angle grinder even to injury to the employee. Therefore, it is desirable not to cut the corner edges all the way through, but to leave a narrow groove and then break off, grind subsequently the ledge.

Making a template for cutting metal profile

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

When working on the workpiece to be cut in the right place put a template and pressed firmly, the markings are applied sharply sharpened scribe when outlining the template contour. The workpiece is cut in several steps with a gradual deepening of the groove.

The chisel for pipe cutting with my own hands

Using the template is not very convenient to make a cut on the line, holding the angle grinder on weight, which leads to large errors. If you have a welder, you can make a simple jig to guide the angle grinder disc, not allowing it to go sideways.

To do this, use a previously made template, in the side of which a hole is drilled and a nut is welded. When working, a homemade jig is put on the profile, a bolt is screwed into its nut and the device is pressed against the profile surface. the angle grinder with a metal disk performs a cut by slightly pressing the disk against the side of the device. It is clear that with prolonged work, the edges in the hedge trimmer gradually grind, and although the process occurs simultaneously on all edges, over time there will be some inaccuracies. Therefore, it is better to make the device from hard, wear-resistant metal, in order to increase its life and obtain a more accurate tool.

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How to cut a metal corner with an angle grinder

Metal corners are of different kinds, of black metal, aluminum and galvanized, different sizes, reinforced and ordinary, equal and flattened.

But, when performing repair and construction work, all these angles need to be cut to size. The best way to cope with such a task is an angle grinder, but it is often very difficult to cut an angle. Now let’s try to figure out how to cut an angle correctly, at right angles or 45 degrees.

The first thing to do, before starting to cut, is to fix the corner well, so that it does not wobble or fall off during the work. Corner can be divided into two types by size, light and heavy. To the light corners can include the corner of 30 x 30 mm, 40 x 40 mm, 50 x 50 x 5 mm. Heavy angles include 63 x 63 mm, 75 x 75 mm, 100 x 100 mm and more.

It is better to clamp light angles in a vice so that the place of the cut, was at a distance of about 10-15 cm from the place of clamping. If it is impossible to clamp a bend in a vice, for example, there are no vicees available, or the bend is already welded to the framework, or the bend is of large size and weight, you can cut it directly on the spot. In this case it is necessary to put some kind of support under the angle at a distance of 10-15 cm from the place of the cut. In both cases the piece to be cut should hang in the air.

There are also several ways to position the bend. Place the first corner so that one shelf stands vertically and the other horizontally at the top (“D”). This option is suitable when you clamp the corner in a vice. The second way to put a corner so that the support was on both flanks (in the form of ˄). This method is used when the vice is not handy. In this method, the angle is pressed with the foot, at a distance of about 30-50 cm from the place of the cut.

Not an unimportant moment the height at which the cutting of the angle. If the angle is lying on the table, you must pay attention to the length of the cut and the height at which it lies. It is desirable that the length of the piece was less than the height of the table, in this case the cut bend, when it will descend during the cutting, will not touch the ground and will not jam the wheel angle grinder. For example, you need to cut a meter of metal angle at a height of 80 cm, respectively, the angle will touch the floor, which could lead to a clamping circle. In this case, you can ask your partner to hold the cut piece or put the entire angle on the ground. In the latter case, the piece will touch the ground, but the angle will be too small and the circle will not clamp.

Mounting decorative PVC corner with their own hands

Plastic (PVC) corners are very widely used in finishing rooms, they are installed on the slopes of plastic windows, they frame the outer corners of walls and the slopes of doorways. In this article, we’ll take an in-depth look at the process of mounting a PVC corner to a plastic window jamb, and how to make a neat joint between two corners.

Step 1. Make a marking. We need to put the PVC corner to the slope and make a mark on the edge of the vertical slope:

The minimum length of the angle to be applied (L) must be greater than the height of the slope (a), by the width of the angle (b), allowing for a small margin (c):

For example, if the height of the slope a = 1500 mm and the width of the angle b = 30 mm, the length of the angle must be at least a b c = 1500 30 15 = 1545 mm.

Step 2. Make a cut on the PVC corner removing one edge as shown on the photo below:

The corner fits perfectly, you can proceed to the next step.

Step 3. The plastic corner is only glued to the slope and that is enough to hold it in place, so you only need to apply glue to one of the sides.

As a glue can be used “Moment Montazh”, “QUELYD Masteix” and their analogues. Do not use superglue, because it is almost impossible to fix mistakes.

Apply the adhesive to the inner surface of the corner either in a dot or a thin strip:

Fix the PVC corner with masking tape (while the glue is drying):

Step 4. Repeat step 1-3 for the right-hand slope:

Step 5. Mount the angle on the horizontal slope. The length of the angle is taken with the same reserve as for the vertical, but taking into account the two sides. Also, we mark and then make notches and glue the corner to the slope:

Step 6. Mark the place for the cut. Corners will join at an angle of 45 °:

Step 7. Carefully cut through two corners at once. It is very important that the knife is sharp:

How cut wood at 45° to make rectangle or square frame.

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Step 8. Lubricate the joint between the corners with white acrylic sealant. After the adhesive dries, take off the masking tape. Installing the PVC corner is finished.

Template 45 degrees. 45 degree angle template

Often a home handyman must urgently perform some measurement or make a marking at a certain angle, and there is no hand or squares, or protractor. In this case, a few simple rules will help him out.

If it is necessary to construct a right angle urgently, and there is no angle book, it is possible to use any printed edition. The angle of the paper roll is a very precise right angle ( 90 deg.). The cutting (punching) machines in printing houses are set up very precisely. Otherwise the initial roll of paper will begin to cut crookedly and askew. So you can be sure that the angle is right.

And if there is not even a printed edition or it is necessary to build a corner on the ground, for example when marking the foundation or a sheet of plywood with uneven edges? In this case, the rule of the golden (or Egyptian) triangle will help us.

angle, corner

A golden (or Egyptian or Pythagorean) triangle is a triangle with sides that relate to each other as 5:4:3. According to Pythagoras’ theorem, in a right triangle, the square of the hypotenuse is equal to the sum of the squares of the cathetuses. Т.е. 5×5 = 4×4 3×3. 25=169 and it is undeniable.

Therefore, to construct a right angle, it is sufficient to draw a straight line of 5 (10,15,20, etc.) length on the workpiece.д. multiple of 5 cm). And then, from the edges of this mowing line begin to measure out on one side 4 (8,12,16, etc.e multiple of 4 cm), and on the other. 3 (6,9,12,15, etc.).д. in multiples of 3 cm) a distance. You should get arcs with a radius of 4 and 3 cm. Where these arcs cross each other and there will be a right angle (90 degrees).

Such angles are usually used in the manufacture of rectangular frames. The material from which the frame (baguette) is made is sawn at an angle of 45 degrees and joined. If you do not have a plane or protractor handy, you can get a template angle of 45 degrees as follows. It is necessary to take a sheet of writing paper or any printed publication and bend it so that the line of the bend passed exactly through the corner and the edges of the bent sheet coincide. The resulting angle and will be equal to 45 degrees.

House lamp made of wood with their own hands

A 60-degree angle is required to construct equilateral triangles. For example, you need to saw these triangles for decorative work or accurately set a power slope. A 30-degree angle is rarely used in its pure form. However, with its help (and with the help of the angle of 90 degrees) the angle of 120 degrees is constructed. And this is the angle needed to build equilateral hexagons, a figure very popular with carpenters.

In order to construct a very precise pattern of these angles at any time, you must remember the constant (number) 173. They follow from the ratio of the sines and cosines of these angles.

Take a sheet of paper from any printed publication. Its angle is exactly 90 degrees. From the corner on one side, measure 100 mm (10 cm).), and on the other, 173 mm (17.3 cm). Connect these points. So we obtained a pattern, which has one angle of 90 degrees, one of 30 degrees and one of 60 degrees. You can check it on a protractor. everything is accurate!

Remember this number, 173, and you can always plot angles of 30 and 60 degrees.

When marking up a pattern or a construction on a part, besides the angles themselves, their ratio is very important. This is especially important when making rectangular parts or e.g. when marking foundations, cutting large sheets of material. Incorrect construction or marking up brings a lot of unnecessary work or a lot of waste later on.

Unfortunately, even very accurate positioning tools, even professional ones, always have a certain margin of error.

There is, however, a very simple method of determining whether a part is rectangular or not. In a rectangle the diagonals are absolutely equal! So, after drawing it is necessary to measure the lengths of rectangle diagonals. If they are equal, it’s okay, it’s really a rectangle. If not, you have constructed a parallelogram or rhombus. In this case it is necessary to “play” a little with the adjacent sides, so as to achieve the exact (in this case) equality of the diagonals of the marked rectangle.


Sizes are chosen based on the type of work to be performed, be it indoors or outdoors. Also assesses the condition of the angle on the presence and nature of defects and damage.

To trim exterior window jambs wide corners are used

When installing the corner on the slope will be sufficient to use elements of size 10 x 10 mm or 20 x 20 mm. For exterior window trim wider elements are used.

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