Homemade vibrating table for paving slabs. Do-it-yourself vibrating table for paving slabs - drawings and videos How to make a vibrating table for paving slabs

Making a vibration table with your own hands is not as difficult as it might seem at first glance. You just need to stock up on everything you need for this and follow certain instructions. I will introduce you to them further.

Some general information

What is a forming vibrating table in general and why is it needed on the farm? If you were looking for a similar article, then you already know the answers to these questions.

But for those who stumbled upon it by chance, I will explain:

1. The equipment in question is a table whose top is secured using a system of springs or hangers. A vibration motor is installed at the bottom of the platform, which causes it to vibrate when turned on;

1. Concrete is poured into special forms, which in turn are installed on the tabletop. Transmitted vibrations remove air bubbles from the solution, thereby increasing its strength qualities.

Using this method at home you can make:

• Paving slabs;

• Eurofence sections;

• Window sills;
• Monuments;
• Foam blocks.

Such equipment can be purchased in a store. But its price is quite high, and for one-time use it is unprofitable to make such an expensive purchase.

But make a vibrating table for paving slabs It won’t be very expensive to do it yourself. So, if you set out to economically, but at the same time beautifully and practically, improve your suburban area, then further information will come in very handy.

Process Description

Any business should always start with preparation. necessary materials and tools. Vibrating table assembly with my own hands is no exception in this matter, so let's get started:

Stage No. 1: prepare everything you need

You will need a certain set of materials:

And you can’t do without tools either:

In addition to the above, of course, you also need drawings of the vibrating table, which can be found in abundance on the Internet. It is according to the scheme you like best that further assembly work will be carried out.

Stage No. 2: assembling the base frame

Now let's move on to making the vibrating table.

Let's start by assembling the base frame:

1. Cutting a corner using a grinder into four parts in accordance with the data on the drawing diagram. Most often these are 700 mm sections, but depending on the volume of your planned work, you can choose any other sizes. That is, the more you need to produce, for example, the larger the machine should be;

Be sure to wear safety glasses before cutting, otherwise you risk getting scale in your eyes.

1. The resulting we assemble the fragments into a square or rectangle and weld them to each other welding machine.

If you do not have a welding machine or do not know how to use it, then as an alternative, you can connect the sections with bolts, having previously drilled them in the right places. This design will be collapsible, but less rigid.

Stage No. 3: installation of legs

How to make legs?

To do this we proceed as follows:

1. We take profile pipes or a pipe, depending on how long it is, and cut it again using a grinder into four absolutely equal parts. It is very important that all supports have the same height, since the slightest slope to one side will lead to the mixture pouring out of the mold during operation of the vibrating table.

In addition, you also need to pay attention to:

• The vibration motor, which will be attached to the tabletop, did not touch the ground;
• The machine operator did not bend over during its operation, but could perform all operations in the most comfortable position for him;

1. The resulting We weld the sections to the corners of the previously made frame;
2. Now it is necessary to solve the issue of stabilizing the structure.

Here you can go two ways:

• Dig small holes under the legs, install them there and concrete them. In this case, ideal stability is guaranteed, but the machine will also be stationary. If you plan to work exclusively on your suburban area, then this best option;

• Weld round or rectangular pieces of metal to the edges of the supports, increasing their area of ​​contact with the ground. In this case, it would be a good idea to additionally connect the legs below with crossbars from the remnants of the corner. The design will not be as fixed as in the previous version, but it will have mobility;

Stage No. 4: assembling the tabletop

This is the most critical stage at which you must adhere to the following algorithm of actions:

1. Preparing the springs. I deliberately did not include them in the materials, because I wanted to give separate information on them additional recommendations. After all, most owners will be puzzled by the question of where to get them. So, the best option is to go to the car market and buy moped springs or springs from car shock absorbers;

1. Cut them in half and attach them to each corner of the base frame. If it looks like an elongated rectangle, then one spring must also be fixed in the middle of the large sides.

The plan is carried out in one of three ways:

• Welded at both ends to the base and to the tabletop;
• They are welded at one end to the base, and special glasses are installed on the tabletop, into which they are inserted a third of their length;
• They are welded at one end to the tabletop, and special glasses are installed on the base, into which they are inserted a third of their length;

Instead of glasses, you can weld pins. In this case, the springs will not be inserted, but put on them, which is also suitable for the normal operation of the vibrating table.

1. We apply the vibration motor to the tabletop in the place corresponding to the drawing, and make marks through the mounting grooves. At the obtained points we drill holes for the bolts, with the help of which we fasten the engine. To prevent the bolts from protruding from the outside, you can first weld a small metal box at the place where the vibrator is fixed;

It is better to choose for the countertop steel sheet with sides. This will prevent the molds from slipping off the surface in the future.

1. We weld or place the tabletop on top of the base with springs and we get a homemade universal vibrating table, ready for use.

Conclusion

In the article you learned what a vibrating table is for and how to make it yourself at home. The video in this article contains some additional materials related to this topic. However, if you have any questions while reading, please ask them in the comments.

What can you do to save your budget when arranging the site, paths in the garden and making a beautiful and convenient entrance to the garage? One option is a homemade vibrating table. With its help you can make tiles different sizes and colors.

A vibrating table is a so-called tabletop, which, under the influence of an electric motor, vibrates and causes the mold with tile mortar to vibrate.

If you decide to produce tiles only for yourself, then the vibrating table can be made in small sizes so that it does not take up much space.

Standard parameters of vibrating table

Optimal size work surface The vibrating table is considered to be 600x600 centimeters. As a table frame, you can use available durable metal sheets or an old tabletop.

In any case, use such material so that after the final preparation of the tiles, it will be useful to you for other work and will not gather dust on the sidelines without use.

Please note that the quality of your tiles will directly depend on the materials from which they are made. Therefore, we recommend that you thoroughly calculate everything.

The quantity of tiles obtained is the sum of the number of molds purchased as blanks for tiles. Immediately after production, you will not be able to remove the finished product from the mold; it needs to sit thoroughly in its mold for about 24 hours.

That is, if you buy 50 molds, you can produce no more than 50 tiles per day.

Production of vibrating tables

So, what initial tasks need to be solved before starting work on the manufacture of a vibrating table:

You must determine the optimal height of the vibrating table yourself, depending on your height and build, since comfortable work will add efficiency and productivity in the production of tiles. A height of up to one meter is usually recommended.

After you have decided on the dimensions, we begin to assemble the vibrating table; it is usually mounted on four legs, for which used pipes are used, but just remember that they must be similar in size with springs. The springs should sit loosely in the pipes at a height of a couple of turns.

Or, corners welded together into a frame are used as legs. But in this case, the springs will need to be connected to the frame by welding, or small sections of pipes will need to be cut and the springs inserted into them, and the pipes themselves will need to be welded to the frame.

In any case, the vibrating table must stand steadily, not wobble or fall on its side. Here you decide for yourself what quality you want to make the table and how much money you are willing to invest in it.

If making a vibrating table is not part of your plans, but you still want to make tiles with your own hands, then we recommend buying a vibrating table for tiles according to an ad on Avito.

This way, you will save your time and immediately begin the tile making process.

The classic vibrating table has the following frame dimensions:

• Width 0.5 m;
• Length 1 m;
• Height 1 m.

Important tip: more is not better! Don't assume that if you design a huge table that you will produce a large volume of tiles.

The larger the table, the more difficult it is to achieve uniform vibration using a conventional motor. In such a situation, you will have to spend money and buy a powerful vibration motor.

Vibrating table made from car tires

An interesting solution was to make a table from used car tires. Any driver will have such material. And you don’t have to look for pipes or metal corners.

To make this type of vibrating table, you will need 3 tires. Connect them together in four places with bolts. We attach the motor to the bottom lid of the table, exactly in the middle. This way your structure will be stable.

Let's summarize.

We have given you several examples of making vibrating tables. All available tools that you have in your garage can be used: tires, bolts, an electric motor, car springs, pipe sections and metal corners.

After making tiles, you can use your vibrating table for other purposes, for example, as a machine for cutting boards and other materials.

The amount of work completed depends only on you and the volume of forms that you purchase for your work. Install the table at the optimal height for your height, this will promote comfort and speed when creating tiles.

For high-quality workmanship To create paving slabs or sections of a concrete fence with your own hands, you need a vibrating table, which you can purchase or you can make yourself. It is easy to make and economically feasible. Most of the materials for it are available in any workshop or garage.

Studying the prices for paving slabs and concrete fences, many decide to make them themselves. Firstly, it is profitable, and secondly, you can make good money on subsequent production, especially if you live in an area with a large number new buildings and empty lots. To implement the idea, just select the shapes and make a vibrating table.

Nuances when preparing for work

Despite the fact that all methods for making a vibrating table are largely similar, there are nuances that need to be clarified at the stage of creating the drawing. So that you don’t have to redo everything after launching, let’s look at the main ones.

Selecting the engine

A special vibration motor can be purchased at the store, but it is not cheap. Most people prefer to purchase engines from friends washing machines or find suitable option in the garage. In general, you can rely on the following indicators: for large tables weighing 200-250 kg and tabletop length from one to two meters - motor from 0.75 to 1.1 kW. For small vibrating tables up to two hundred kilograms and a size of 1x1 meter or less - a power of 0.23 kW.

Do not forget that low-power motors are not intended for mass production and can withstand about 30 cycles, after which the bearings will have to be changed, and the axle may also become loose.

What material to choose for the countertop

Metal is most often used, since it is easier to clean the solution, but in our example we will show the option with an OSB board. The material was not chosen randomly, main goal was to simplify the design. The plate does not carry a structural load, but only serves to protect the engine and vibration mechanism from the solution getting on them, so there is no need to make it out of metal.

When choosing a metal, pay attention not only to the dimensions, but also to the weight of the slab. If the engine is powerful and the tabletop is made of thin metal, it can be torn off or bent. If you choose thick metal and a motor from a washing machine, its power will not be enough to create the desired vibration.

Base shape

Factory tables are supported on four legs, our example will show an H-shaped base. In terms of strength and stability, it is not inferior to the classic form, but in this way it was possible to achieve a convenient approach from any point. When dragging mortar or tiles, a person does not cling to the partitions, and manufacturing costs are significantly reduced. At classic version Not only do you have to weld the frame, but you also have to reinforce it with cross-shaped planks.

To make sections of fences, you will have to make an oblong vibrating table, a little more than two meters long, and for tiles a small one, up to 50x50 cm, will be suitable. Everyone selects the height according to their height.

Springs or rubber cushions

Rubber pads or springs are used to make a vibrating table. If the table is made for yourself and runs on a low-power motor, you can install rubber cushions. Large tiles or fences require springs.

When there is strong vibration, the plate collides with hard rubber. These impacts will eventually destroy not only the cushion, but also the tabletop itself. In addition, the impacts are transferred to the frame and if you do not weld the platform legs, they will break the floor or enter the ground unevenly.

You can get springs for free by asking your friends. Others simply buy springs from a moped or car on the market and cut them in half. They should be from 8 to 12 cm in height. Soft springs create less noise, but can be strongly compressed. Considering that they are selected empirically, it is better not to take risks.

To check whether the springs are suitable or not, in the assembled state, load the platform with a weight twice the planned load. In this state, the tabletop should not come into contact with the glass under the springs.

Two motors or one with eccentric regulation

There is a situation when a person found two old motors from washing machines and decided to install them on a vibration table. Such engines will work normally provided that they are absolutely identical. Otherwise, different frequencies will lead to “boiling” of the concrete.

Some deliberately take this step, planning to regulate the strength of vibration by turning on one or two motors at the same time. It is better to purchase one powerful one and adjust the force with eccentrics, this will reduce the percentage of defects.

Tools and materials for making a vibrating table

Since the vibration mode is very aggressive, the material for the future table must be chosen with a margin of safety.

To make a vibrating table you will need:

• 12 meters profile pipe size 100x80 mm;
• quarter square meter metal sheet 12 mm thick;
• round bars with a diameter of 40 mm and a length of 400 mm;
• round bars with a diameter of 100 mm and a length of 150 mm;
• four bolts 20x100;
• metal screws;
• engine 2800 rpm 1 kW;
• machine;
• cable.

Necessary tools for work:

• Bulgarian;
• a set of locksmith tools;
• square;
• ruler;
• electrodes;
• cutting wheels.

Step-by-step instructions for assembling a vibrating table

For the base, we cut six pieces from a 100x80 pipe, 600 mm long, and one two-meter piece. For the upper movable plate, we cut four pieces from a 100x80 profile pipe with a length of 440 mm and two pieces of 2200 mm. From a sheet 12 mm thick, cut a rectangular piece measuring 600 by 400 mm.

Now let's start assembling. Let's start with the base, which consists of two H-shaped supports, placed on their sides and rigidly connected to each other by a crossbar by welding, from pipe sections 600 mm long.

20x100 screws are installed on the lower horizontal of the supports to adjust the table level. On the top ones, 6 pieces of pipe are welded, 1 cm high and with a diameter suitable for the springs.

Springs from engine valves of a ZIL car or any other heavy-duty vehicle are well suited for this. Three pieces of tubes are welded onto each support. The tubes act as cups for the springs.

The top plate of the vibrating table is a rigidly welded rectangular frame, along the edges of which sections of profile pipe 2200 mm long are connected to each other by parts of 440 mm pipes, at equal distances from each other.

A 12 mm sheet measuring 600x400 mm is welded to the frame in the middle, onto which the vibration motor is attached. The same sockets for springs are welded along the edges of the frame as on its lower part. The sockets on both sides must be placed strictly opposite each other so that the springs inserted into them stand vertically.

The peculiarity of this table is that vibration occurs in a horizontal plane, eliminating boiling of the mixture. That is why the vibration mechanism must be made independently, and not install a factory one, which has vertical vibration.

The vibrator mechanism itself consists of a bearing cage and a hollow cylinder. Bearings are installed at both ends, and the cylinder itself is welded to a plate on the upper half of the vibrating table.

1 - cylinder; 2 — races for bearings; 3 - bearings; 4 - shaft; 5 — eccentrics; 6 - pulley; 7 - nut

A shaft is pressed into the bearings, onto which a pulley is placed, and two eccentrics are installed on it, which are attached to the pulley with six bolts. Since the bolts are located in a circle at the same distance, this makes it possible to rotate the eccentrics in relation to each other, thereby regulating the force of vibration. All this is secured with a nut screwed onto the thread at the top of the shaft.

A flange electric motor is mounted on the opposite side of the plate when the help of four bolts A pulley is pressed onto the motor shaft. Rotation from the engine to the vibration mechanism is transmitted via a textrope belt. All this is covered OSB board, cut to the size of the table.

That's basically all. The table has been tested quite well; over the course of a year, about four hundred tons of concrete were vibrated on it; there were no breakdowns or malfunctions during this time.

Common manufacturing mistakes

Some people do not put springs in glasses, but put them on steel fingers. When vibrating at the moment of pressure, they can move slightly in different directions. This uneven load quickly wears out the springs.

The tabletop is framed around the edges so that the molds do not slide onto the floor, but one corner should be bent for drainage. Then you won’t have to pick out the remaining mortar with a trowel.

To determine where to weld the cups on the frame, you can lubricate the springs with grease and press the frame against them, then marks will remain on its surface.

Take your time and do everything efficiently, then you can sell the equipment and get a lot more money than was invested. Thus, you will not only save on tiles and fences, but also recoup some of the material spent on their manufacture.

Paving slabs are an integral element landscape design. It is equally suitable for urban and suburban areas and serves great solution to decorate the site, giving it a well-groomed, neat look. The only drawback is the price, which only grows every year. Want to save money? Then find out how to make a vibrating table for paving slabs with your own hands.

Vibrating table - what is it and what are its advantages?

Homemade vibration table

Vibrating tables are devices used to make tiles. One of important advantages- the ability to carry out production independently, which reduces the cost of the final product several times. Let's also not ignore other positive features:

• You can make a vibration table from scrap materials in just a day;
• no professional skills of a carpenter, welder, etc. are required;
• the table can last for years without breakdowns or additional maintenance.

A vibrating table is used in conjunction with a concrete mixer and is intended for compaction concrete mixture, from which the tiles are subsequently cast.

Please note: without compaction, the material turns out to be very loose and airy. Such tiles will be neither strong nor durable. It is exposed to temperature, humidity, and mechanical damage.

Using a vibrating table, you get quality product without making any effort, without wasting a lot of time and, most importantly, without overpaying.

Device

The design is quite simple to operate and create. Of course, it differs depending on the tasks set and the desired result, but in general there is nothing complicated here.

The basis of the vibrating table is the motor and the eccentric. During operation, these elements form a vibrating unit. Under the influence of a vibration mechanism, a movable plate is activated, where the mold with the solution is located. Constant vibration compacts the solution to the desired level, after which new forms can be installed. It's convenient and fast. And most importantly, the quality of the finished tiles will be no worse (and even better) than in hardware stores.

What is needed for production. Drawings, dimensions

Main design elements

In order to make a vibration table with your own hands, you need to:

• 4 stands (legs). You can choose any rolled metal: pipes, angles, etc. Select the length to suit you so that you can work without bending over. Preferably at least 1 m. There is no big difference in performance properties between pipes and angles. We recommend choosing stainless steel.
• steel sheet (from 3 mm in thickness). It must be perfectly smooth and free from defects, damage, holes, etc.
• electric motor from 250 W and above, depending on the volume of work to be done.
• springs (hardened steel).

You will also need tools. You can limit yourself to a drill, grinder and welding machine.

The key characteristic of the table is its dimensions. If production is planned large quantity tiles, it is better to initially make the table larger. Accordingly, the engine power must be sufficient to create the necessary vibration. We recommend choosing motors with a power of 250 W and higher. As for sizes, in most cases 180x80 cm is recommended.

Advice: a good solution could be an engine made from washing machine. It will work for several years under average loads. The weak points of the engine are the bearings and bushings. If you first replace them with better ones, the table will last longer.

If you want to make a higher quality vibration table, it is better to buy a special vibrator. For example, IV99. Yes, it costs 6–7 thousand rubles, but it is practically eternal. A great addition would be a speed controller.

How to make a device with your own hands

We suggest using the following scheme:

Typical diagram of a vibrating table for paving slabs

1. The base to which the tabletop will be connected is made from a corner or channel. These elements must be strong and firmly connected to each other. Especially if you plan to create a large table. Concrete is a heavy material, and the structure must be able to withstand it well. Take measurements, cut the required length of material, weld a rectangle.
2. TO internal corners The legs are attached to the base using a welding machine, and plates are welded to their lower part, after which they are concreted. If you plan to move the table during use, skip this step. But then the stability will be low.
3. It is better to take the legs higher and then “shorten” them with a grinder. Select the height to suit you so that it is convenient to work. Optimal height- at waist level.
4. Place the tabletop on the base. It must be perfectly smooth. Otherwise, the mixture will overflow over the edges. Use a level. If it is not available, you can download the application for mobile phone. But remember that readings may not be accurate.
5. At the corners and in the middle, install and weld springs - at least 6. You don't have to look for special ones. Take moped springs and cut them in half.
6. Place a steel sheet on the springs and bolt the engine to it. Check the drawing.
7. Place the tile mold on the sheet. You can also make it yourself or buy it in a specialized store in your city.

That's all. During operation, the motor will act on the sheet, and the springs will provide smooth vibration. In this case, the base of the structure (if the legs are concreted) will stand motionless.

The main thing is to first make sure that the surface is completely horizontal. Otherwise, the solution may splash out. Therefore, we recommend doing stationary table, not portable.

As you can see, there are no difficulties in creating a vibrating table for paving slabs. Minimum quantity materials, tools, skills - and you can make such a table yourself in just a day. Calculate how much money you will save, and be sure that the investment and time spent on the construction of the structure are definitely worth it. Even if you buy a relatively expensive vibrator.

Vibrating table for paving slabs - a very convenient design Where might tiles be needed? For finishing the sidewalk near the house, for arranging gazebos, ground floors and a courtyard. There are just a ton of options, but if you make your own vibrating table, the finishing process will go much faster and with better quality. The result will be the production of original and almost designer tiles, which will be much more beautiful than standard materials made from a stamp at the factory.

General characteristics of a vibrating table for the production of paving slabs

It’s not only possible to make a homemade vibrating machine for producing tiles at home, but also necessary. For the tile itself you need cement, a little sand, water and dye. A vibrating table is required to form and compact the raw materials in each slab blank. Naturally, you can purchase a ready-made table in a special hardware store, however, the cost will be too high, even if you choose the minimum power of the product.

The price will depend on which:

• Equipment;
• Dimensions;
• Power;
• Manufacturer.

You can make a vibrating table for the production of paving slabs yourself

In general, it is quite possible to produce homemade table for the formation of slabs, and this will allow significant savings, and all invested funds will pay for themselves more than once. Basically, large batches of paving slabs are not made at home, and therefore it is not worth spending money on huge vibration mechanisms.

The type of homemade vibrating table is very simple, it is metal structure, which in appearance resembles the most ordinary table. The tabletop is installed on a frame with a spring or glasses with a special gap. The motor is installed in the lower part, and it is due to it that the tabletop will undergo vibrations in order to ensure high-quality compaction of the cement mass placed in the slab molds.

Uniform distribution makes the slabs more durable, non-porous and wear-resistant. It boosts them operational properties and service life.

Some people believe that it is possible to make tiles without such a special table, but then you can immediately be prepared for poor quality, medium density and too short service life. It is the air bubbles inside the products that cause their early destruction.

Do-it-yourself vibrating tables for paving slabs: drawings and materials

To make a table, you need to make drawings of the future design and materials through which the product will be constructed. Making a vibration table yourself is not at all difficult.

And the materials you will need are:

• Metal corner or pipes;
• Sheet metal;
• Springs;
• Bolts;
• Electric motor.

Angles or pipes are needed to form a frame or, in other words, to make durable frame with stable support. Sheets of metal are needed to create a tabletop, and therefore the sheet must be strong, wear-resistant, and have a thickness of at least 8 mm. The spring is needed in order to provide a large amplitude of vibration, and you can find it in any market for the sale of automobile spare parts. The most suitable spring would be from a moped. They will be required in the amount of 2 pieces.

Diagram of a vibrating table for paving slabs

Since their size is too large, each one can be divided into 2 parts.

As for the set of necessary equipment, you need a grinder, as well as welding machine. Pipes and sheets of metal are cut with a grinder, and holes are drilled with a drill to install the electric motor. By means of welding, the final assembly of the entire structure into a monolithic structure is carried out.

Choosing a motor for a vibrating machine for paving slabs

As already noted, the installation of a vibrating table begins exclusively with the preparation of drawings. They are needed to select the height and width, visualize the future structure and draw up a plan of materials and tools.

As for the design parameters, for ease of use, you should choose a height of about 90 cm, a length of 180 cm, and a width of 70-180 cm.

Naturally, the width of the tabletop will determine how many materials can be placed on it, and this will affect the power of the purchased engine. It is important at the construction stage to decide what type of table the table will be, in particular, portable or stationary.

For a vibrating table, an engine model IV-98 would be an excellent option.

Those who make tables themselves, and various settings like circular saw prefer to use:

• Available means;
• Parts from old vehicles;
• Only proven spare parts that will definitely work after assembly.

For a vibrating table, an engine model IV-98 would be an excellent option. The most important thing is that the motor is simple and can be removed from an old washing machine. In this case the power is not too important indicator and the optimal value is sufficient. The main criterion by which an engine is selected is an eccentric, or, in other words, a device that provides vibration. Engine models IV-98 and IV-99 can be an excellent analogue of a household engine.

Do-it-yourself assembly of a vibrating table for paving slabs

If the product will portable type, then you need to do it with small in size to make transportation easier. In a stationary mechanism, you can significantly expand the working surface without hesitation.

If the product is portable, then you need to make it small in size

Basically, stationary mechanisms are dug into the surface of the earth for better stability.

1. From metal corner The legs of the structure are made strictly according to the drawing.
2. Next, 2 pieces are also made from a corner or pipe, the distance of which is equal to the length of the tabletop.
3. They will be used for the base of the product.
4. It is necessary to join the legs and 2 pieces of metal by welding.
5. Next, the countertops are installed. On the top side it should be in the form of a sheet of durable steel, and the engine will be installed on the bottom. The lid should be made movable, and therefore you need to attach springs and cups to the frame.
6. The engine is installed at an angle of 45ᵒ, and it is mounted after the springs. The engine must be electric and when installing it, a number of features must be taken into account.

If the installation is carried out in a horizontal position, then the vibration will go vertically, and if it is installed directly, the waves will be horizontal. In other words, it simply won’t be possible to achieve the desired effect. That is why experts recommend installing equipment at an angle of 45ᵒ so that the vibration spreads across 2 planes at once. When assembling the device, you need to check every action with the drawing, which will allow you to do the work quickly, correctly and without errors.

DIY vibration table for paving slabs (video)

It is not only possible, but also necessary to assemble your own table for tile production, and this requires a minimum of funds, time and materials, the main thing is desire and compliance with the recommendations.