How to cut a corner on a baseboard

How to cut a ceiling plinth without special tools

If you do not have a miter box and the desire to make it using the above recommendations, try to cut the plinth without using a special tool.

To do this, you need to attach the fillet to the ceiling (only the way it will be fixed) and draw the line.

A similar operation is carried out with another wall forming an angle. The intersection of the two lines will show you where to cut off a piece of the ceiling plinth. To do this, you must once again attach the plank to the ceiling and draw the line from the specified point to the end of the plinth, to the bottom corner.

If you need to prepare the material for the outer corner, use the following algorithm:

  • On the right side, a plinth is applied to the ceiling and a fishing line is drawn along it.
  • A similar operation is carried out on the left side of the corner.
  • On the plinth, you need to make two marks: the place where the corner of the room passes and the point of intersection of your lines.
  • After connecting these points, you will receive the necessary cutting line.

Among the main disadvantages of the presented method, it is necessary to highlight the fact that sometimes there are significant errors, the cause of which may be: a human factor, a bad pencil or an uneven ceiling / walls.

Docking the skirting board

Having studied the information provided in detail, you can answer the question of how to cut a ceiling plinth using different methods for solving this problem. But besides this, you need to know effective ways to connect the planks.

One of the ways (which has already been mentioned) is based on the use of connecting elements.

Install Perfect Outside Baseboard Corners/Easy Math Trick

They are available for external corners, for internal corners, as well as for connecting skirting boards in straight sections. A very convenient way to save time and, in some cases, financial resources.

Even experienced specialists will not be able to mount skirting boards for ceilings so that everything is perfectly smooth and beautiful.

In order for the quality of the work performed to be at the highest level, you must use the following recommendations:

  • on straight sections of the plinth, you need to connect so that one part slightly covers the other;
  • after applying glue at the junction, the residues must be wiped off;
  • all gaps between different parts or between skirting boards and ceiling / walls must be sealed with a sealant (alternatively, putty with water-based paint).

How to cut a corner on a skirting board: professional advice

The appearance of the ceiling in your home, apartment or office largely depends on the choice and installation of ceiling plinths. It is not only the color, material, width and other parameters of the presented elements of the decoration of the premises that play a role, but also how they are prepared and mounted.

In order to prevent irreparable mistakes in the process of fastening the planks, you need to know the answer to the question: how to cut a corner on a ceiling plinth without asking for professional help.

Preparing corners with a miter box

Builders, carpenters and renovators are familiar with this device.

Miter box. a special wooden tool with slots, in the form of an inverted “P”, which allows you to cut a board or plinth so that an angle of 45 or 90 degrees is obtained.

In addition to this device, you will need a clerical knife, a hacksaw for metal and a sandpaper if you are working with wooden skirting boards.

The preparation of the corners should be carried out without undue physical effort so as not to damage the skirting.

Experienced experts recommend adhering to the following procedure:

  • At the bottom of the miter box, you need to lay the side that will contact the ceiling, and the lower part is pressed against the right wall.
  • The adjacent corner is prepared in the same way, but the plinth is applied to the left wall / slot.
  • The resulting cuts are applied to the corner, if you have a large gap, trim the irregularities with a clerical knife.
  • In the case when a small gap is observed between the prepared skirting boards, remove it after fixing all the elements using a putty.

To do this, it is enough to cut the strips at right angles and then insert them into the connecting element. But this solution to the issue cannot always be applied in practice.

Very often the connecting part looks ridiculous, stands out strongly against the general background and spoils the appearance of the room.

The main disadvantage of preparing skirting boards using a miter box is the fact that this method is only suitable for rooms where the angle between the walls is 90 degrees.

Any deviations or irregularities can prevent you from performing this work efficiently. And one more advice from experts.

If you are inexperienced in preparing skirting corners, practice on scrap or unusable material before proceeding with this task.

Material for the production of ceiling slats

The first skirting boards were made of plaster. But they did not last long in the building materials market (the main reason is the high cost of gypsum plinths), giving way to products made of foam, wood and expanded polystyrene.

corner, baseboard

Before proceeding with a detailed analysis of the question of how to correctly cut a corner on the ceiling plinth, it is necessary to find out what are the features of each category of the presented products.

Polyfoam is the most economically profitable material for the manufacture of ceiling plinths. The main advantages of this category of products are:

  • low cost;
  • looks great on the ceiling;
  • it is not difficult to choose skirting boards that harmoniously fit into the interior of almost any room;
  • well cut;
  • these skirting boards are easy to work with.

There is also a “reverse side of the coin”. foam products break easily, but many experienced experts argue that this fact is not a serious problem (the skirting board is not physically affected on the ceiling).

Even if you do not know how to properly cut the corners of the ceiling plinth, you can practice on products from the category presented (cut pieces, etc.).

Expanded polystyrene, which is used as a material for the production of ceiling skirting boards, is stronger than polystyrene, but this criterion negatively affects the cost of products.

The main advantages of the presented category of skirting boards are their high strength, long service life and the ability, without strong physical efforts, to cut off the corners you need.

Wood products are more expensive and look more solid than the above products. But the presented category of ceiling plinths is difficult to machine.

In order to cut off a corner, you will not only have to work with a hacksaw (experienced experts recommend using a blade for metal), but also eliminate irregularities using a sandpaper.

The question of cutting the corners of the ceiling plinth must be resolved taking into account the materials used for their production. For example, to prepare foam products, you can use an ordinary clerical knife, which will be a poor helper if you are installing wooden skirting boards.

How to make a miter box without the help of specialists

If you do not have a miter box, but you know that you can use it to prepare ideal angles, then make this device yourself.

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To do this, you will need:

  • three small boards;
  • nails;
  • hammer;
  • hacksaw for metal.

Make a small U-shaped tray with cuts that form the corners necessary for your task. The main thing is not to rush, carefully check your incisions (preferably with a protractor) and make sure that your structure is stable.

If you know how to cut a corner of a ceiling plinth, but for this you need a device that allows you to cut off non-standard corners on fillets (another name for plinths), make the necessary tool with your own hands.

To do this, you need to connect two rectangular boards with the letter “G”, and make cuts on one of them. On paper, using a protractor, you need to draw a mowing line so that they form the necessary angles with one of the boards. The device is ready, it remains only to test its functionality in practice.

As a last resort, you can always find some kind of thing that will help you cut off part of the baseboard at the right angle (book, table pushed against the wall, etc.).

An important point! When making measurements, keep in mind that for the outer corner of the ceiling plinth you need to take a margin equal to its width (fillets, in this case, protrude outward).

A few tips from experts

If you are interested in the question of how to cut corners on a ceiling plinth, from a theoretical point of view, or you plan to make repairs in the indefinite future, then you should remember some tips:

  • when making repairs indoors, make sure that all the elements not only create an overall beautiful picture, but also “dock” with each other;
  • you should not buy wooden skirting boards if you do not know how to work with it;
  • fix the planks only after they are fully prepared (you are unlikely to be able to clean up irregularities on the glued ceiling plinth);
  • installation of ceiling strips should be carried out, starting from the corners, according to the principle: “from complex to simple”;
  • when buying ceiling plinths, take the material with a margin (not only taking into account possible errors, but also to compensate for losses on uneven walls).

Practice shows that trimming the ceiling plinth, despite the complexity of this process from the position of beginners, after “passing” several corners, is perceived much easier. But doing similar work in a room with rounded corners can be a major challenge, even for professionals.

Typically, these problems are solved using a method that is based on creating “patches” where the bottom is wider than the top. This work requires perseverance, a good eye and accuracy.

perfect inside miter joint hack. baseboard molding install

After a detailed study of the question of how to cut the ceiling plinth in the corners, even a person without experience in this field of activity will be able to independently perform this task at home.

As a result, you will not only save money, but also get moral satisfaction after the repair work.

How to cut the inner corner of a skirting board

Ceiling, as well as floor corners are divided into external and internal. The installation methods for fillets or skirting boards are identical in both cases. the methods differ in a mirror image. Consider how to cut an internal corner for a plinth, since they are in a regular rectangular room, but there are no external ones.

If the angle is straight

For 90 ° and 45 ° corners, it is best to use a miter box. It is this tool that almost completely eliminates the appearance of cracks at the junction. The main thing is to be careful during the work.

How to properly cut a corner on fillets in different ways

Skirting board, or scientifically “fillet”, is a popular decorative element that gives the finish an aesthetics and a complete look at the junction of walls and ceilings. The complexity of the installation of these structures lies in the junction of the corners, both internal and external. So that there are no gaps left and you do not have to mask them with sealants, you should accurately and accurately cut the product. Consider how to cut a corner on fillets in different ways to make the ceiling edging look attractive.

How to connect the fillet at the outer corner

Often the architecture of the walls in houses has a complex, “irregular” shape. In such situations, the craftsman has to cut out the outer corners of the ceiling plinths. The method of carrying out the work practically does not differ from cutting out the inner corners.

Here it is also necessary to make the fillet edge at 45 °. The difference lies in cutting from a different angle. It is for this reason that it is important to mark the miter box. If the manipulation is performed without it, the direct fit method is used right on the spot. In this case, pencil marks are made not on the ceiling, but on the wall, below the product.

Docking the ceiling plinth without miter box

It’s good when all the necessary tools are at hand. But how to make a corner on the ceiling plinth in the absence of a miter box?

The procedure for trimming the product can be done in two ways:

  • By marking the product in place;
  • Make a miter box yourself.

The first option involves applying marks to the plinth by applying products to the wall. An important point. the ceiling fillet is pressed against the wall in the position in which it should be fixed.

The sequence of actions is as follows:

  • first, a fillet is applied on one side and tightly pressed against the wall by the butt;
  • with a pencil, a mark is made on top in the form of a mowing line. It is better to take a solid pencil, it leaves less visible marks on the ceiling;
  • such manipulation is also performed on the reverse side with an adjacent part;
  • at the point where the mowing lines intersect, a mark is made on the fillets.

Alignment of the resulting mark with the lower edge of the product makes it possible to draw the line, which will be the required 45º. However, this method is relevant only if there is an ideal geometry in the room.

Making a miter box yourself

In some situations, it is impractical to purchase a miter box. For example, for one-time use, you can make it yourself with your own hands. To do this, you will need several planks, from which you should assemble a U-shaped tray.

Use a protractor to mark it at right angles in the middle and 45º diagonally on both sides. Carefully make grooves with a hacksaw, which will further fix the hacksaw when you need to cut the required fillet angle.

What is miter box

The miter box is a construction auxiliary tool that every carpenter should have. It is used for working with materials where it is necessary to cut products at the desired angle.

corner, baseboard

The option is a U-shaped bar with saw grooves applied on it, allowing you to make an even cut of the product. Standard values ​​are.45 and 90⁰.

How to cut an inner corner on a skirting board?

To cut a corner on the fillet, you must attach it to the required corner and take a measurement. Then the plinth is placed with the lower part (on which the glue is applied) on the miter box, and its upper part must be completely pressed against the wall of the tray. In order to cut the skirting board, you must use either a metal saw or a sharp construction knife. It is very important that there is no pressure on the building material during cutting, as it may break. The same manipulation is done with the second plinth, after which both fillets are glued to the intended place, and the angle is corrected with a knife and plaster.

How to properly cut a corner on a ceiling plinth?

Anyone who is independently engaged in the repair of their homes, sooner or later may face the problem of how to properly cut a corner on the ceiling plinth. Thanks to the use of this technique, the interior of the room takes on a beautiful and finished look.

Ceiling plinth or fillet comes from:

The highest quality is considered to be a polyurethane fillet. It is moisture resistant, durable and elastic. However, its disadvantage is temperature drops. After polyurethane skirting boards, polystyrene foam is considered the second in quality, but acting on them mechanically. proceed with caution, as they can easily break. The most economical option is a polyvinyl chloride baseboard. However, they are electrostatic and cannot be repaired for defects that may arise during operation or transportation.

Designers advise using a narrow fillet for low ceilings, and a wide one for high.

Alternatively, when using a ceiling plinth, you can separately purchase corners that will be located in the corners of the room. However, very often the designer’s intention involves gluing the skirting board without using special fittings. In this case, two skirting boards are joined, cutting corners in them.

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However, the process of cutting out the ceiling corner can become a real problem for a beginner, and sometimes even for an experienced builder. After all, if inaccuracies were made in the work, then the two fillets may not dock.

How to cut corners on a skirting board?

Usually, in order to cut the outer or inner corner of the fillet, the following building accessories are used:

The miter box is a kind of tray, in which there are slots at the required angle. Typically, plastic skirting boards use 45 or 90 ° slots.

corner, baseboard

How to cut an outside corner on a skirting board?

In order to cut the outer corner, the fillet must be placed with the lower part, which will be glued, to the bottom of the miter box, and the upper part must be pressed tightly against the wall of the tray. For cutting, it is also necessary to use the 45 degree slot, however, in the other direction.

Here are some tips with which you can easily cut corners on fillets correctly.

Little tricks

There is not always a miter box, although for an even cut, this is a very useful thing. But sometimes, you won’t need it if you have a piece of paper at hand.

You can make a paper miter box. It is enough to apply such simple markup on paper:

And the resulting template is quite suitable for use instead of a tool.

In order not to get confused when sawing off, you need to remember:

  • The right side is cut from the left side, and in the miter box is placed on the right side
  • The left, respectively, is placed in the miter box on the left side, and sawn off on the right

For decorative elements used on ceilings or walls, there is exactly the same corner fittings as for floor ones. With its help, you can generally save yourself from the need to do something with the corner joints.

Such connections also look beautiful, but you will have to do much less. But evenly connected decorative elements still look more neat and, in general, look more interesting. Therefore, it is better to work a little, but do everything the way real masters do.

Uneven walls and joints

This is a headache for anyone who has undertaken a renovation. But for those who set themselves the task of attaching the fillet, the corners will become a stumbling block. How to cut a corner on a skirting board if the walls converge far beyond 90 degrees? It is necessary to cut off the connecting parts very accurately, otherwise, they will not converge exactly.

There are many ways to make your job easier. In some cases, some will do, in others. others. The simplest and most reliable is with the correct preliminary marking of the ceiling and transferring it to those parts that need to be sawed off.

This method works if you are careful and accurately mark everything up. You should not figure it out “by eye”. this way the accuracy of the connection cannot be achieved.

It will also not work to disguise unevenly connected parts. flaws in the work will still be visible, so it is better to do everything right away accurately and accurately.

For external and internal connections, you need to use albeit similar, but different markup methods, which are described below.

External connection

So how do you make an outer join if a fillet is being mounted? Different situations should be followed by different options.

You can cut off both parts using a miter box if the walls allow. The main thing to remember is that the outer joints must be cut off, placing the part in such a way that the side that will press against the ceiling is at the bottom of the miter box, and the one that will press against the wall is on the wall of the tool.

But, more often than not, you have to resort to manual marking again, and then cutting or sawing off according to the resulting marking.

You need to mark it by analogy with the previous instruction, with the only difference that the markup is applied on the outside of the protruding part.

A fishing line is drawn on the ceiling, at a distance from the wall equal to the thickness of the product. The second line is drawn in the same way. The resulting crosshair will be the point from which the fishing line is drawn along the cut piece.

On the wall, you also need to draw a mowing line, on the underside.

To the point where they converge, the line is drawn directly along the future part of the connection. From the point on the ceiling to this.

The resulting marking will be the line along which you need to saw off or cut off the connecting parts.

Using these techniques, you no longer need to wonder how to cut the corners of the ceiling plinth.

Using a miter box

It is quite simple to handle this device. the part that needs to be cut is inserted into it, and sawn off with a hacksaw through the existing slots. The main thing is to position it correctly and not to confuse the slots. As a rule, there are no questions about how to cut a corner on a fillet. With the help of a picture, it will be easier to understand the essence of the process.

But, this tool will only help when the master is faced with the question of how to saw off the plinth at 45 degrees or at 90. In other cases, when ceiling plinths are made and you need to cut a corner, but it is not even, the question most often arises. how? This situation appears almost every time.

Internal connection

  • We apply the product to the ceiling, where it will be glued and draw a line along its border.

In the same way, we apply the part that will connect with the first and mark in the same way with a pencil line on the ceiling.

The intersection of the lines will be obtained in the place marked with the arrow This point should be transferred to both parts.

  • Applying them alternately to the corner, you need to draw the line from the resulting point to its other end.
  • Cut or saw off according to the resulting markings.
  • This method is suitable if you have questions about how to make an inner corner. But for external ones, another solution is needed, how to make the corner exactly.


    In order to make a corner on the skirting board, not so much is required:

    • Ruler or tape measure
    • Miter box
    • Hacksaw
    • Sharp knife
    • Pencil

    All this, as a rule, any home craftsman has in his arsenal. But not all of them know how to make corner joints on skirting boards. Therefore, before starting work with those details that will go into action, you can practice on small pieces that will not be used, or take one whole part for training.

    If polystyrene or polyurethane products are glued, it will be useful to wash your hands thoroughly, since these things are usually bright white, and handprints are clearly visible on them.

    It is also not worth putting too much pressure on them during installation. despite their outwardly apparent strength, they bend and crumple quite easily.

    Well, the skills of working with different tools will not hurt. If everything is done for the first time, then you should be careful, especially with office knives, they are very sharp.

    How to make a corner on a ceiling plinth?

    Ceiling plinths, or fillets, are used to make the transition from wall to ceiling more beautiful, as well as to hide irregularities in these places, or not the most successful joints of the ceiling and wallpaper.

    There is no doubt about the usefulness of this decorative design element, but there is one point that gives a lot of trouble to everyone who undertakes to independently fix the ceiling plinth. the corners. It is this moment, almost no one succeeds the first time.

    To facilitate this task, you need to learn how to properly cut a corner on the ceiling plinth after reading this instruction, and then everything will go easily and will not require much effort.

    Fumbling with fillets is not easy. The techniques described in this article will allow you to remove, first of all, the questions of how to properly cut the ceiling plinth if the walls are not perfect. When the walls and ceiling are even, you only need a miter box, which will allow you to cut the ceiling plinth exactly as you need it. at 45 degrees.

    See also  How to properly trim a ceiling plinth inside corner


    For the internal. the same, but in the opposite order: the attachment occurs on the left or far side of the miter box.

    Both trimmed skirting boards are applied in place without gluing. If there are gaps, the fragments are fitted to each other with a knife. Small defects can later be covered with putty. It will also be useful to read the article on how to make do-it-yourself wall putty.

    Hand Right IMPORTANT: Even when using a template, trimming corners requires some skill. Therefore, for the finisher doing this for the first time, it is recommended to first practice on the unnecessary remnants of the baseboard, cutting them off, and trying to dock without gaps.

    Cutting features

    Let’s take a closer look at how to properly cut a corner on the ceiling plinth using a miter box using different materials.

    Using a miter box at home

    The easiest way to adjust the strips of the skirting board is to cut it with a miter box. This device is a U-shaped structure (something like a box without one of the walls). In the sidewalls of the miter box, cuts are made in advance, which are later used as a template for cutting both the plinth and other materials.

    Cutting the plinth at an angle using a miter box, see this video.

    The miter box has the following advantages:

    • It allows you to accurately cut the edges of the skirting board according to the finished template.
    • It is easy to do it yourself using four planks, a square and a saw. At the same time, you can cut through the template grooves for every taste, depending on the required type of work.
    • It makes it easy to form both inner and outer corners.

    The only drawback of this method concerns only those cases when the miter box is made by hand: it is necessary to be extremely careful, in advance to outline the mowing line for template slots using a protractor, without deviating by a degree.

    Cutting a corner on a ceiling plinth using a miter box has its own characteristics. You may also be interested in reading an article on the topic, plastering walls with your own hands, types of plaster.

    How to make a corner on a skirting board using a miter box. step-by-step instruction »Repair technology» How to make a corner on a ceiling plinth using a miter box. step-by-step instruction

    Ceiling plinth is a decorative element that separates the wallpaper or tile from the wallpaper on the wall. It completes the look of the room and completes the decor. However, in order to correctly join the two strips of the skirting board in the corner, it is necessary to cut it off correctly. How exactly is this done? There are several ways to achieve your goal.

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    DIY installation

    Once the corner is properly cut, it must be attached to the wall. This can be done in the following ways:

      Thin carnations. This method is suitable for wooden skirting boards attached to wooden walls. You can’t drive a nail into a concrete or brick partition.

    Pencil and ruler

    It is good to use the miter box in rooms with even corners. But often the angle between the walls is not equal to 90 degrees, which means that it is unwise to cut the baseboard using a template designed for a 45-degree cut. In this case, manual marking is used with a pencil (or marker) and a ruler.

    The cut method in this case looks like this:

    • The plinth is applied to the corner, a line is drawn with a pencil along its outer edge.
    • Applied to the other side, the mark is repeated. As a result, a cross should appear on the ceiling, marking the place where the edges of the two plinth elements converge.
    • A piece of plinth is installed in place, which will be glued to the corresponding wall. On it, the position of the cross on the ceiling is marked with a pencil, and on the lower edge is the junction of the two walls. Read in a separate article on how to make stucco molding on the wall yourself.


    Polyfoam is also often found as an element of the decoration of rooms. Its characteristic feature is increased fragility, therefore, it must be adjusted in place very accurately, the foam does not tolerate any deformations.

    You need to cut it with a miter box as follows:

    • Plinth plates are stacked in the miter box.
    • An incision is made. Unlike polyurethane, foam is a soft material, and you can even cut it with a knife or, better, with a stationery or construction cutter. Here it is better to use a small, but even piece of wood, a metal plate or a ruler. As a last resort, you can make pencil marks corresponding to the slots of the miter box, connect them with a ruler. and lead the slot.

    Asterisk IMPORTANT: Styrofoam is a brittle material, so the cutting tool should be sharpened as best as possible.

    How to make a corner on a baseboard

    The last chords in the symphony of a protracted renovation include the most insignificant and seemingly uncomplicated works. A striking representative of these is the installation of ceiling plinths. Performing actions on an absolutely flat surface does not cause any difficulties, but every wall ends somewhere, and this is where many get stumped: ceiling plinth how to make the corner perfectly even? Here are some tips for those stranded.

    How to make a corner of a ceiling plinth

    How to cut a corner on a skirting board using a special tool

    Let’s start, perhaps, with the simplest way by which you can make an even joint between two skirting boards. This is the use of special ready-made elements that are fixed in the corner and the ends of the baguettes are inserted directly into them. Elementary in terms of execution and quite tolerable in terms of appearance.

    For adherents of ideality in all the little things, the following method is intended. To do this, you need to purchase a special tool. miter box. There are countless variations of his models: from the most ordinary to professional ones. If you don’t need extra spending, and you are always happy to make something, then you can easily make such a device yourself, its design is primitive.

    And so, how to cut a corner on the ceiling plinth, we insert one of the elements into the tool as shown in the picture below. Namely, we press the back wall of the element against one of the inner sides of the miter box. We choose the slot with which we will remove most of the material from the back wall of the skirting board.

    Then we insert a hacksaw there (necessarily for metal, since it has smaller teeth that will not leave torn edges) and saw it. We do the same with the second element. Please note that this method is only suitable if the masters have tried their best and made perfectly even corners in the room. Otherwise, the bevels of the panels will not close tightly.

    How to make a skirting corner using a miter box

    The elements for the inner corner should be cropped as shown in the following photo. Namely, the panel is again inserted into the tool and is applied with its back side to the inner wall of the miter box. Now you need to choose the slot that will help cut off most of the material from the front side of the skirting board. Again, this option is intended for absolutely even corners.

    A small clarification that will save you unnecessary trouble: the type of panel cutting depends on its thickness. If it is thicker, then the cut should be made along its edge. In the case of choosing thin models, you can not just cut them flat, but still at an angle.

    How to cut a corner on a ceiling plinth. get by with the affordable minimum

    There is a very simple, just the same elementary way that will help to join the corners of the ceiling plinth without using any tools. Below is an image of a kind of “snowflake”. It should be transferred to a hard, stable surface. Depending on which angle you need, you attach the baseboard to the lines and cut straight along them.

    This option is acceptable for even corners. But you can use it for uneven ones, only the baguettes will have to be adjusted several times: tried on. slightly trimmed, and so on until the edges converge. Never rush to immediately glue the panels without preliminary “fitting”, otherwise you either have to remove them completely, or fiddle with fitting for a very long time.