How to cut heat resistant glass

The roofing felt is quartz or hardened, but when you try to cut it with a glass cutter it crumbles into crumbs.
I have an old Electrolux and there are no options to order glass for it. I found several glasses from domestic stoves, one of which has already been damaged. Tempered glass. There is no chance at home.

mastak

, try with a thermal saw (grinder). Just choose the right disk. Rag with corundum. And I would use a worn disk, the angle is higher, the temperature is also higher. I recommend wearing glasses, or better yet, wear a mask.

In my opinion, the speed will be lower, the power will be higher, the temperature will be lower.

Riga resident

, maybe (I don’t know the dependence of the cutting speed on the angular speed), but the power to turn will be less, the leverage will be less. This means the disk will smoke at full “force”. Compromise means you need to calculate.

Try it with a diamond string in a bath of water.

Cut Shura, cut! mastak

, sorry, I remembered

Perform local heating and quickly cool. When cutting, it will most likely crumble. Approximately lower the nichrome wire at the cut site into water. You need to fill your hand.

I also heard that you soak a nylon thread in gasoline, and put it where it was cut, then set it on fire, and put it in water. I haven't tried it myself.

ARTHUR

,
johanh
, this will not affect glass from such a stove, since this process (hot-damp) is present during frying.

I wonder if the problem is solved or not, mastak

, you would unsubscribe, what you tried, what happened. Not as soon as half a year in question.

OleghkA Try it

There are a lot of glass cutting workshops. I haven’t applied yet even for simple glass, unless of course it’s window glass.

m.ix

,
johanh
,
OleghkA
, Take a look at the date of this message!
The artist forgot about this glass a long time ago. I haven't forgotten.
Thanks to everyone for participating in this problem, that's all. does not exceed. I have already destroyed 11 glasses from old Soviet stoves. I tried it with nichrome wire both in the input and in the air - it bursts. It almost happened the last time with a diamond disc on a 7000 rpm motor. in water. I cut off one side, and the other immediately fell apart. In short, it’s a gimmick mastak

, Yes, well, sorry, I thought you didn’t care anymore. Seriously, I came up with an idea, maybe it’s autogenous, like metal? Only glass will probably lose its properties after this.

Or like at a glass factory. First heat until yellow, and then use a stream of water. The only thing is how will you cool it?

Added August 19 2005

I wonder what does electronics have to do with it?

Remembers

It won't be possible to cut. 100% There is an option to release the glass, cut it and temper it. But this is also a hassle. Tip #1 is to order auto glass from manufacturers. Our glass size 40*20 cm costs 400 rubles. It is seasoned and quite oven safe. Tip #2: Do it yourself. Buy 4mm glass of the required size, preferably polished, without scratches or chips, and heat it yourself. Do you remember how they used to heat cut glass? Yes Yes. Place in the oven at about 350 degrees for four hours. Experts also advise sprinkling borax on top. This is how I made glass (double) for my grandmother - about three years passed. Grandma is actively baking pies, the glass is all splattered, but it’s worth it! I hope my advice will help you.

johanh

, this is what I do every day, fry sausages.
Boshevskaya stove. gurich_1
, I didn’t cut slabs, but tempered plain glass can only be cut this way, I shortened the shelf. And if you use a diamond wheel, you can easily grind it, but with water

OleghkA What, single-layer glass?

johanh

, on Boche? Yes. It is reinforced. The sticker is like on microwave ovens. There is a decorative front, but only one on the inside.

And the Soviet ones had a single layer, on the inside.

Added August 19 2005

mastak

, the other side fell down, most likely because you started to rush. On one side there is enough patience, and then... although this is just an assumption, you know better, you are in charge.

How to cut fireproof glass

Glass is a very popular material that is used to construct completely different structures. This depends primarily on the physical and chemical properties of the substance.

Today, glass that can withstand high temperatures for a long time without losing its basic properties is very popular. More information about heat-resistant glass can be found on the website https://spark-decor.com.ua/ru/ogneupornoe-steklo.html.

Main characteristics

Fireproof glass is a material that differs from ordinary glass only in its resistance to high temperatures. These products can be used in conditions where this value can reach about 1 thousand degrees.

In production, such glasses are produced by adding special refractory compounds to the base composition, for example Al2O3, B2O3, etc. This allows you to develop not only heat resistance, but also heat resistance.

Moreover, these characteristics directly depend on the thickness of the product; the higher it is, the better it will withstand the effects of temperature.

Heat-resistant glass can be divided into several main groups:

Class E. Products of this type are used for protection against hot gases and fire. Can be melted only with prolonged heating.
Class 1. Such glasses are used for temperature protection.
Class R.
Class W. These glasses are not used as a protective material.

It should be noted that fireproof products are somewhat different from tempered glass. The latest products crumble very easily on impact and are not able to withstand high temperatures.

Glass processing

Cutting fire-resistant glass is a rather complex process that requires special tools. There are several ways to perform this procedure at home:

Using a pobedite cutter with turpentine.
An alternative is to use a thin diamond wheel. To optimize the process, be sure to water the cut to remove dust and cool the working part. At the same time, this must be done very carefully, without unnecessary stress.

Cutting tempered glass is absolutely excluded and is not performed with any tools. Although some home craftsmen manage to do this, it rarely happens without damaging it.

If you need to cut heat-resistant glass, it is advisable to entrust this to specialists who already have certain skills in solving such problems.

Watch the video to see how fireproof glass is made:

Cutting tempered glass at home

Tempered glass is considered one of the most common materials. To increase its strength, hardening technology is used. After carrying out such a procedure, the degree of machinability of the material is significantly reduced. When considering whether it is possible to cut tempered glass, we note that only by using special technologies can the occurrence of a defect be avoided. Today, cutting tempered glass can be done at home, using a variety of tools.

How to cut fireproof glass

Glass is a very popular material that is used to construct completely different structures. This depends primarily on the physical and chemical properties of the substance.

Main characteristics

Moreover, these characteristics directly depend on the thickness of the product; the higher it is, the better it will withstand the effects of temperature.

Heat-resistant glass can be divided into several main groups:

Class E. Products of this type are used for protection against hot gases and fire. Can be melted only with prolonged heating.
Class 1. Such glasses are used for temperature protection.
Class R.
Class W. These glasses are not used as a protective material.

It should be noted that fireproof products are somewhat different from tempered glass. The latest products crumble very easily on impact and are not able to withstand high temperatures.

Glass processing

Cutting fire-resistant glass is a rather complex process that requires special tools. There are several ways to perform this procedure at home:

Using a pobedite cutter with turpentine.
An alternative is to use a thin diamond wheel. To optimize the process, be sure to water the cut to remove dust and cool the working part. At the same time, this must be done very carefully, without unnecessary stress.

Preparatory stage

When considering how to cut tempered glass, you should consider the preparatory stage. Careful preparation allows us to achieve high quality. Cutting tempered glass at home is carried out taking into account the information below:

During the production of the material, zones with internal areas of stress are formed. With rapid heating and cooling, such areas are redistributed. The inside of the glass becomes more viscous compared to the outer layer.
At the time of processing, the workpiece must be securely fastened. A variety of devices can be used for this.
The surface of tempered glass must be cleaned of contaminants. An example is oils or paint, which can significantly reduce the quality of processing.

In general, we can say that preparation for work is quite simple. However, without special tools and equipment, cutting will not be possible.

Types of glass cutters

First of all, you need to remember that there are different types of glass: regular window glass, tempered glass, plexiglass, acrylic glass, corrugated glass, and ten more options. Also, even an ordinary one can be quite thick or, conversely, thin and very fragile. Depending on the type, the tool and cutting method are selected. But using a glass cutter is the most common option.

The construction market offers several options for glass cutters:

Diamond can cut glass of almost any thickness and its service life is long. A diamond is used as a working element, which, if necessary, can be easily turned with an unsharpened edge;
roller has a working part, which is made of an alloy of cobalt and tungsten and is characterized by increased strength . The number of rollers ranges from one to six and they can be replaced;
The oil one has rollers and a reservoir with lubricant, which flows to the surface and reduces friction. When worn out, the roller itself and its fastening require replacement;
with a compass function that allows you to cut circles. Most often, an ordinary oil glass cutter is mounted on a special device with a scale that allows you to set the diameter of the circle.

Before cutting glass with a glass cutter, you need to prepare it:

clean from dirt, possibly wash and wipe dry;
remove the slightest dust, since the smallest particle that a glass cutter stumbles upon can become a source of cracking;
if used glass is used, it is also degreased with kerosene;
drawing cutting lines.

Tool selection

A tool for dividing a glass surface into parts is a glass cutter. They cut sheets of glass of various thicknesses. When choosing a tool, you need to make sure that the fragments are separated into parts the first time. Glass cutters come in the following types:

Glass cutters with a diamond cutting head used for a long time. The high hardness of this stone ensures excellent cutting quality over a distance of about ten thousand meters.
Tools in which the cutting function is performed by rollers made of an alloy of tungsten and cobalt, which is particularly durable. Such glass cutters allow cutting glass up to four millimeters thick.
In an improved design of roller glass cutters, a container of oil is placed in the handle of the tool, which is supplied to the cutting line. As a result, the depth of penetration of the cutting part into the structure of the material increases. Thick glass can be cut at home with an oil glass cutter.
Circular cuts are made with a glass cutter, similar in shape to a compass. One end of the tool is strengthened with a suction cup in the center of the circle being drawn; its radius is set using an adjustable scale, at the end of which the cutting element is located. Typically, such glass cutters are equipped with a reservoir for supplying oil to the surface being processed.

Main types of glass cutters

To work, you also need a long and even ruler, along which a straight line of separation will be drawn. To make cuts of a more complex configuration, use a pattern of the appropriate shape.

Safety regulations

The approaches to how to properly cut glass with a roller or diamond glass cutter are the same. The main thing is to follow certain rules and remember safety precautions:

wear protective equipment: gloves and goggles;
place the glass on a flat surface and check that it fits well and does not vibrate;
scratch along the ends of the cut line so that you can ease the pressure and avoid chipping the edge;
a diamond glass cutter is taken at the base of the handle and guided without much pressure along the intended line;
The roller glass cutter is clamped with a pinch between the thumb, ring and middle fingers, and the index finger is responsible for the pressure. It should be pressed to obtain a whitish cut;
On the reverse side, lightly tap along the cut line;
move the glass to the edge of the table and break it off along the cut line.

There is a relationship between the width of the glass and the width of the strip that breaks off freely:

Craftsmen have their own style when working with glass surfaces, but you should adhere to some general recommendations on how to cut glass correctly:

there is no strong pressure applied to the glass cutter so that the edges of the cut do not crumble;
one line - one cut, you cannot “cut” again in one place;
movements with a glass cutter must be fast and confident. Optimal: 1 m in 2 seconds;
towards the edge, the pressure decreases, which allows you to avoid crumbling the edges;
mark the table, not the glass itself.

How to replace a glass cutter

Not only professional tools will help when cutting glass, but also not quite ordinary ones, for example, such as scissors or a grinder. They can easily cope with such work under certain conditions.

Scissors cannot cut glass in the air, but you can cut glass with scissors in water. In a liquid, gravity is less and the scissors make not a cut, but a microcrack. This crack plays the role of a capillary into which water will enter. Capillary water has a wedging effect at weak points of crystallization and the glass breaks off in pieces.

Interesting! If it is necessary to cut out shaped parts, the glass is placed in cold water and then boiled for several hours. After cooling, the tension inside is relieved and the material becomes soft.

There are several ways and options for cutting thick glass. The simplest one is to use an oil glass cutter if the thickness is no more than 20 mm. But as an option, you can use a grinder. The dimensions of the tool should be small and convenient. The diameter of the circle is the smallest, then it will be easier to work with.

Tempered glass cutting instructions

The high strength and hardness of the surface determines that quite serious problems can arise when cutting. When considering how to cut tempered glass, you should pay attention to the following points:

The workpiece is prepared by annealing. This technology provides uniform heating of the surface. Due to this, the stress that forms inside the material at the time of hardening is eliminated. Due to such tension, it becomes much more difficult to achieve the required dimensions.
The annealing process involves heating water to a certain temperature, after which the workpiece is lowered into it. It is worth considering that car glass or decorative glass should be cut at different temperatures, it all depends on the brand of material.
The exposure time of tempered glass in water can vary significantly. In some cases it takes about an hour, the most difficult versions are aged for a month.
After reaching the required temperature, the product is slowly cooled. The work is performed slowly, thereby eliminating the possibility of even the smallest defects.
Once the surface temperature has dropped, you can put on glasses and cut using a glass cutter. You can cut glass for your phone in a similar way.
Markings should be made before cutting. Smooth and accurate lines are achieved by using a square and other measuring instruments.
The material should be pressed with medium force, as a high load can lead to serious defects. The cutting is carried out quickly; it is not recommended to try to make the fishing line again due to the fact that such actions can lead to splits and cracks.
At the time of cutting, you should be careful, since it will not be possible to re-make the cutting line. After receiving the required mowing line, a rod is placed under it, and with a sharp push the product is divided into two parts.

If you do the work carefully, you can get a high-quality cut. The end surface can be finished using a grinding stone.

Plexiglas: glass or plastic

Not all types of glass can be cut with glass cutters. There are materials on the construction market that either cannot be cut at home at all, or to cut them you need to familiarize yourself with certain rules, and some are cut very simply.

One of the most flexible materials for cutting is plexiglass. It is a transparent plastic with thermoplastic properties. The material is very easy to process, but there is one feature: low thermal conductivity, due to which the edges of the cut immediately heat up. Therefore, before cutting acrylic glass, you need to think about how to cool it.

Basic tools for cutting plexiglass:

hand saw for metal;
a circular saw;
cutter;
milling machine;
stationery knife.

The choice of tool directly depends on the thickness of the glass: the thinnest - with a knife, the thickest - with a circular saw or on a machine. Electric saw blades are special for plexiglass, but are suitable for copper and aluminum.

You need to work quickly with a hacksaw or stationery knife. Unlike window glass, the cut line can be drawn several times. During cutting, the blades are cooled so as not to melt the edges of the cut. The resulting cut will have roughness, which can be removed when processed with sandpaper.

The low melting point makes it possible to cut plexiglass with a jigsaw and obtain a wide variety of shaped products. In a jigsaw, the file is replaced with nichrome wire. which connects to a transformer with an operating voltage of up to 4 V. The heated wire easily and softly passes through the plexiglass along any trajectory. the cut is smooth and even, requiring no additional processing.

Glass cutting tool

The quality of the work performed depends on what tool is used. Cutting glass at home requires a glass cutter to make straight cuts.

If you need to cut an oval or circle, you can use a special compass. The cost of such cutting equipment is high, so to perform single jobs it is better to contact a specialized company.

You can make this cutting tool yourself. To do this, use a suction cup with a rail, at the end of which a cutting tool is attached. The cutter rotates in a circle around the suction cup.

Measurements are made using metal tape measures, squares and rulers, which do not shrink or stretch during use. For ease of work and to ensure the required stop of the glass cutter, it is recommended to use a ruler with a thickness of 8 mm or more. You will also need a hammer, wire cutters, a file and sandpaper.

Which glass cutter to choose

To get started, we recommend this video:

Roller, diamond and oil glass cutters are used for cutting. In a roller tool, the cutting element is sharply ground discs made of an alloy of tungsten and cobalt. It is a wooden or plastic handle equipped with a drum with one or more rollers.

A dull cutting element can be easily replaced. But such a tool is not suitable for performing a large volume of work and for creating curved cuts. It is used most often by beginners. The maximum length of the created cutting line is about 350 m, and the thickness of the material should not exceed 4 mm.

Oil roller glass cutters are considered to be a modified version of the regular roller cutter. The difference is that a container is built into the handle, from where the lubricant flows to the cutting roller. Thanks to the oil, friction of the cutting edges is reduced, glass particles formed during cutting are bound, and a deeper cut is ensured. This glass cutter is suitable for working with glass up to 20 mm thick.

The most reliable tool is considered to be a diamond glass cutter. It uses artificial or natural diamond as a cutting element, which is attached to the handle. This mineral penetrates deeper into the material rather than simply scratching it. The edge of the processed product is smoother. The length of the cut on one edge can reach 10 km; after dulling, the crystal is turned with another edge.

You can sharpen it using a diamond-coated whetstone. These glass cutters are the most expensive, and they are difficult for beginners to use, as it is difficult to regulate the pressure. Experience is required to work with diamond tools.

Rules for cutting tempered, grooved and fire-resistant glass

Very rarely, it may be necessary to cut fireproof glass, for example to replace it in an oven or fireplace door. At home and without special skills, such a procedure should not be carried out, since heat-resistant glass is a split system consisting of several tempered and non-tempered glasses. But some craftsmen use a grinder with a diamond blade of very small diameter. To avoid crumbling when cutting fireproof glass with a grinder, pour oil over the cut line.

If you use not a grinder, but a machine with a diamond wheel, you can cut tempered glass at home. In this case, a cooling emulsion must be continuously supplied to the cutting wheel. You can cut it, but all the properties of such glass will be nullified. The technology for manufacturing tempered glass often involves imparting certain properties to an already finished product, such as a fireplace door.

Another type loved by designers and often used in everyday life for decorative purposes is corrugated glass. It differs from the usual one in that it has a non-smooth surface on one side. It is necessary to cut corrugated glass on the flat side with any glass cutter, but an oil cutter is preferable. To make it convenient to work, the table is covered with a soft cloth, on which a glass sheet is placed.

Preparing glass for cutting

The production uses laser cutting of glass, which requires specialized equipment. This work can be done at home with your own hands. Particular attention should be paid to careful preparation of the glass and work area.

The work table must have a flat surface. This is especially important when working with sheets less than 4 mm thick. Under a sheet of thicker material, you can place a sheet of cardboard or several layers of old newspapers.

Newly purchased glass does not require any preparation. It is enough to wipe it from dust using napkins or newspapers. Glass that has already been used before is cleaned using special cleaning products. Before cutting, it must be degreased with alcohol, kerosene or any other suitable means for these purposes. To prevent dust particles from entering, this should be done indoors.

It is recommended to decide in advance on the cutting of the material so that as little waste as possible remains. Large leftovers are set aside as they may be useful later. It is necessary to prepare a basket or box for small trimmings.

In the cold season, when the temperature inside the room is higher than outside, the material changes its properties due to heating. You need to leave the glass in the room for several hours to warm it up, and only then start working with it.