Useful Tips

How to cut granite and marble?


Cutting marble has become necessary since this stone migrated to the interior of living rooms. When they were facing the external walls of buildings, small details and non-standard fasteners were not needed, and in the design they sometimes force him to take such forms as if he were not a stone at all, but plasticine. But in these situations, a solution was found.

Marble - a hallmark of the state

For a long time, marble has been used by man to give the interior grandeur and aristocracy. The rooms decorated with this material are distinguished by their magnificent sophistication and bewitching beauty. The nobility of this stone inspired many famous sculptors to capture their masterpieces in it.

This material is practically timeless, and for many decades retains an attractive appearance. Due to its qualities and appearance, this stone will always remain outside the vagaries of fashion trends and trends. He is eternal, and from this pedestal he will mockingly condescendingly observe all that is vain and perishable.

But in fact, marble is the most common limestone, only having a high degree of crystallization of its particles. The strength of this material depends on the degree of crystallization: the higher it is, the stronger the stone. In addition, this natural material is considered quite soft, which somewhat limits its use in some types of finishes.

Why are we threatened with cutting marble?

To create interior solutions from marble, it is necessary to give it appropriate forms. Previously, for cutting natural stone, mechanical tools were used that could leave microcracks and other damage at the cutting site. With the development of modern technology, waterjet has become increasingly used. marble cutting, which allows you to cut the material without causing damage to it, as well as create a very thin, artistic cutting of the stone.

But all this is applicable for large and bulky work with this stone, and if it is necessary to carry out small repairs in your own kitchen or in the bathroom, then the question arises involuntarily how to drill marble? Now, many will grin: if there were enough funds to finish the bathroom with marble, then there would be enough of them to call a qualified craftsman. And if you want to do all the work yourself? Then you need to be patient, as well as a drill with a set of drills such as “tube” or “feather” with diamond spraying.

Marble drilling is a rather long and laborious process. It is necessary to drill at low revolutions of the drill, while constantly adding water to prevent overheating of the drill.

We cut marble at home

In modern design, marble slabs are most often used for cladding walls, floors, as well as for the manufacture of window sills, countertops, etc. Before all these elements reach the final consumer, they first go through the processing cycle at the manufacturer. There, this natural material is subjected to cutting and subsequent grinding with a pneumatic and electric tool (diamond wheels, marble cutters).

All these technological processes are carried out on specialized equipment and by qualified specialists. But what if marble cutting needs to be done at home? How to cut marble in such cases?

For cutting marble slabs at home, use a grinder and special diamond wheels for working with natural stone. Saw you need to work at low speeds. In addition, water must be constantly supplied to the cutting site to cool the working tool, as well as to prevent the formation of chips and microcracks at the cutting site.

Choosing a stone cutting tool

Choosing angle grinder should be based on the characteristics of stone processing. The most common misconception, supported by fair theoretical knowledge about the hardness of materials (for example, on the Mohs scale), boils down to the fact that the averaged indicators: marble - 3.5 units, iron - 4, and granite - 6.5, indicate the possibility of acquiring one-time stone work most budget model. The motivation is simple - since it is intended for metal processing, it means it can handle marble (and if you work for wear, then granite can not resist). But “nameless China”, which withstands several years of “home” work with iron, very quickly becomes unusable when cutting stone. And problems begin to form from the first working run. When the impeller (responsible for the forced cooling of the engine), together with the air takes away stone dust.
There is only one way out - you should purchase products from a trusted manufacturer.

First level

KEN models 9925D and 9125 are optimal for unprofessional stone work. Their potential, necessary for difficult working conditions, is due to high-quality protection against dust (realized due to the powerful insulation of engine elements and the use of sealed bearings).

  • in power consumption (9925D - 1240 W, 9125 - 860 W),
  • in the differences of the form factor (9925D - rear handle with non-fixed trigger, 9125 - with shorter length and girth, the start button is located closer to the gearbox, is locked in the on position),
determines the possibility of choosing a relatively inexpensive tool, taking into account the expected intensity and load. The affordable cost, in the case of these models, is explained by the simplicity of design and the lack of auxiliary electronic systems.

Average level

For periodic intensive operation, when certain requirements apply to the timing of tasks, you should choose powerful equipment. In this category, traditionally, there are more models:

  • 125mm - L3410VR Flex,
  • 230mm - KEN 9123V, FLEX L3206C, FLEX L2106 VC,
and they all have certain differences in functional protective indicators. That allows you to choose the most suitable option, depending on the needs of the user.

Professional grinders for cutting granite and marble

The technical capabilities of "manual" middle-class models allow them to be used for purely professional purposes, which is facilitated by:

  • keyless casing with keyless fixation (the time required to prepare the tool for safe operation when changing consumables and changing the working position decreases),
  • convenient safety lock against accidental start-up (in combination - a key lock lever in the pressed state),
  • self-disconnecting brushes with the possibility of quick access (damage to the armature is prevented at the maximum generation of brushes, you will not have to disassemble the tool body to replace them),
  • electronic systems that provide smooth start-up and a stable speed at changes in load.

Among the professional two-handed models for the “wet” cut, the GISON GPW 215 pneumatic tool is definitely out of competition.
All kinds of machines are capable of sawing a natural stone with the smallest errors and the best effect. Among others, the relatively inexpensive rail cutting machine H3 (CHD), providing for the possibility of supplying water to the cutting area.

Choosing a stone cutting disc

The right drive is the key to a quality result.
No matter how perfect the technique may be, but without the correct under-blade cutting disc, you can not hope for a quality result. Therefore, you should pay attention to the following indicators:

From the standpoint of ensuring the accurate operation of manual equipment, the disk size cannot exceed 230mm. The potential of a gas cutter and stone cutting machine allows the use of cutting wheels with more impressive diameters.

working conditions
If a diamond disk for dry cutting can be used on natural stone with almost no restrictions (a direct merit of the technology of applying diamond abrasive), then “wet” (due to the lack of its own sufficient capabilities for efficient heat dissipation) does not imply such liberties.

However, cooling is not the only function of the water in the drive area. Solid fine dust, mixed with water, forms a suspension. Thanks to which, the cut is ground during the sawing process. Working with a “wet” disk in dry mode greatly reduces its life.

  • Perforated diamond blade - its integral cutting edge on both sides is covered with a continuous layer of diamond chips and dust. For effective heat removal, holes were made along the rest of the disk surface.
  • An impressive potential for working in the “dry” type is of the “turbo” type - models with additional diamond spraying on top of the main non-continuous stripes on a solid or segmented disk.
  • Solid discs with minimal perforation near the diamond layer, as well as similar models without holes, work only in wet mode.
  • Segment cutting wheels provide the best removal of sawing products from the working area, and thanks to the “wet” technology, they polish the cut well and work for a long time.

The easiest way to select discs is possible only with a clear idea of ​​the material that will be processed. So, exclusively for cutting marble, one-piece (TNK crown LINE M) and segmented (EURO Marble) are optimal. Their main feature is in the wet cut.

There are much more worthy options for cutting composite porcelain stoneware and natural granite (you can find it in our catalog), and the technology of applying diamond abrasive makes them truly universal.

The specialists of the company "Stone-Service-Neva" will help you with the choice of a really high-quality and professional tool for cutting marble and granite. Contact us by phone: 8 (800) 550-65-05.

Natural stone processing steps

Today, modern stone-cutting production makes it possible to process almost any type of stone. The processing technology of marble, as well as other natural materials, is divided into several important stages:

About how marble polishing occurs at home, it was described earlier in that uses special technology and tools designed for this purpose.

Marble processing, as mentioned above, is divided into stages, the first of which is the cutting of natural material. For cutting exclusively specialized machines are used. They can be tape, disk and rope.

After cutting marble, its surface is not particularly smooth and even, so the next step is its grinding. Grinding of marble is achieved by using an electric tool with special grinding nozzles.

In production, grinding and polishing machines are used for this. At home, for processing marble, the grinder and polishing discs to it, with varying degrees of abrasiveness, act as the main tool.

The final step is polishing the marble and protecting its surface for future use. Polishing natural stone is a very important technological process, helping to reveal in many respects not only a beautiful pattern of a stone surface, but also its natural color.

Marble processing at home

The most time-consuming part of the work associated with the processing of marble at home is, of course, cutting the material. It should occur using water and in a room with good ventilation. This will help not only to cool the tool, but also reduce the amount of stone dust emitted.

Stone dust emitted during both cutting and grinding of natural stone is very harmful, so the presence of high-quality hoods is simply a necessity.

Most often, for cutting marble at home, an ordinary Bulgarian is used with a stone disc mounted. For more precise cutting, metal sawmills with moving platforms are used.

Grinding and polishing marble, in many respects similar technologies, allowing to give the material a finished look with a smooth surface. The tools that are most often used for such work are polishing machines and a grinder with grinding discs.

Well, for engraving natural stone, including marble, special devices with stone cutters are used. For subsequent processing of marble after engraving at home, an electric drill with polishing nozzles is most often used.