Shredder of branches from the angle grinder with their own hands

How to make a shredder of branches with your own hands: detailed master classes

Shredder is a garden equipment used to crush the waste generated by mowing grass, trimming trees and shrubs. It allows you to minimize hard physical labor in obtaining from the plant mass of environmentally friendly organic fertilizer. Shredder of branches is not difficult to make their own hands.

For its production, they usually use electric motors from a washing machine, grass trimmer, circular saw, tile cutter and other similar units.

Garden shredder with their own hands: the main elements of construction

Garden shredder, aka shredder or chipper, greatly facilitates the process of taking care of the garden plot. With its help you can easily clear the area from branches and grass. Recycled material can be put in a compost pit to produce a natural fertilizer. It is advisable to use the resulting fine wood as firewood for heating the cottage. Shredded wood chips from fruit trees are ideal for smoking meat.

Shredder for grass and branches will help to cope with plant debris on the site

The construction of the garden shredder is quite simple. It consists of the following main parts:

Some models can be equipped with additional elements:

The working principle of any shredder is the same as that of a meat grinder and is as follows. When the shredder is turned on, the motor begins to run, which drives the working shaft, equipped with a cutting mechanism. At this time, the garden debris enters the receiving hopper and is shredded to a fine chip with the help of the cutter.

Chips made from shredded twigs can be used as compost for plants

Shredding mechanism

Before you begin to create a homemade shredder, it is necessary to clearly determine the type of waste, which he will process. This depends directly on its design features and performance characteristics. There are three main ways to classify garden shredders: type and power of engine and type of shredding mechanism.

The following chopping mechanism options are available

  • milling, for processing hard wood;
  • the universal blade one;
  • windrower, for shredding thin branches of trees and bushes;
  • with rotating turbines for shredding thick branches;
  • hammer, for the disposal of thin twigs;
  • trimmer, based on the use of a fishing line, for soft debris.

When assembling the shredder yourself, preference is given to a knife system or a set of circular saws. It is possible to perform a two-roll design, in which two or three knives are mounted on a massive disc and rotate towards each other.

Different types of chopping mechanism: 1. hammer, 2. milling, 3. knife milling-turbine, 4. knife disc

Engine type and power

The shredder can be equipped with an electric or gasoline engine. Each of them has its important advantages and some disadvantages. Petrol-powered garden shredder, more mobile. Its work does not depend on a power source. It can process thicker, larger branches. However, these chippers are more bulky and heavy. In addition, they emit harmful substances into the atmosphere in the process of their activity.

Shredders with electric motor are lighter and easier to use. However, they are inferior in terms of power and depend on the energy resource.

The ability to process a certain type of garden waste depends on the motor power. For small volumes of waste, where the diameter of branches does not exceed 20 mm, a 1.5 kW motor is sufficient. If branches with a thickness of 20-40 mm have to be shredded, it is advisable to use an engine with a capacity of at least 3.5-4 kW. The shredders with 6 kW motor can cope with large pieces of wood 100-150 mm in diameter.

Shredder with high performance is capable of shredding branches up to 100 mm in diameter

The next feature of shredder design is the type of drive. This function can be performed by a chain, belt or the motor shaft itself, on which the knife mechanism is fixed.

shredder, branches, angle, grinder, their

The device of the garden shredder. let’s define the most important parts of the unit

Material in the garden shredder is crushed by knives. In off-the-shelf models, the knife is most often a metal disk with 2-3 cutting surfaces. A large amount of work quickly makes the teeth unusable and they have to be periodically sharpened. you must agree that this is not very convenient, in addition, it takes up your time. If you decide to make a garden shredder with your own hands, you can not repeat these design flaws, and assemble a reliable, high-performance and, most importantly, durable knife.

We suggest using circular saws with tungsten carbide tips. You need not one drive, but several, to make a system out of them. a package. In ready-made garden shredders the blade is usually 3 cm thick, but we can make the package any thickness. it will depend on the number of purchased saws. On average, 15-25 pieces are needed for a good quality 6-10 cm thick blade. Each blade has a multitude of teeth originally designed to cut hardwood. So grass stems, leaves and twigs will be like seeds to them. In a pinch, if your saw blunts out, there’s nothing to stop you from going to the nearest tool store to buy a replacement.

The circular saws can be used successfully as blades for the chipper

However, the knife is not everything. In order to set it in motion we need a motor. For shredding small amounts of twigs quickly, it’s easier to use an electric motor. Its use may seem to be somewhat inconvenient because of the cable and the need to connect to a socket, but it works almost silently and does not release exhaust fumes. A single-axle tractor has more power, so it’s perfect for when you need to crush rough material often and for a long time.

Shredder branches with their own hands (garden, homemade)

Every owner of a vegetable garden or a garden plot from time to time has to get rid of leaves and grass, especially when it comes to cleaning the garden. Many use the collected material for making organic fertilizer or mulch, often twigs, more precisely, sawdust and chips obtained from them, are also used for heating.

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In this case, it is quite difficult to do without such a universal and practical device, as a shredder of grass and twigs.

Features and benefits

Garden electric shredder. a versatile device with which you can recycle non-liquid waste collected on the site in record time. The shredded material can be used to make compost, green fertilizer, mulching the soil around bushes and fruit trees.

Thanks to a simple and small-sized device the answer to the question “how to grind herbs into powder” will no longer bother you. with great productivity you will be able to form your own vitamin tea mixtures and make seasonings for the winter.

Grass choppers, both factory-made and homemade, have a fairly large capacity with relatively low power consumption. Perhaps this is the main advantage of units of this category. they allow you in record time to grind a fairly large amount of raw materials into a homogeneous mass. menu

The structure of the chopper

Classic chopper for grass on the principle of action somewhat reminiscent of a meat grinder or blender. It is equipped with tracking basic elements:

Some models are equipped with transporters for feeding raw materials and removing the processed mass from the hopper, amateur models are mainly characterized by manual loading / unloading, as well as significantly less power.

Blade group can be disk (such products perfectly cope with the processes of grinding grass, hay, small twigs) or milling (industrial shredders for twigs with a diameter of about 20-25 cm).

In general, shredders of grass can be classified as follows:

  • amateur. small-sized products with disk cutting mechanisms and power up to 2.5 kW;
  • semi-professional. equipped with a motor models with power of about 4 kW;
  • Professional. larger and heavier machines from 14 kW equipped with conveyor belts, suction hoppers and milling cutters.

Recently, garden shredders of twigs and grass for a power tiller have also become very popular. mounted devices, driven by energy from the main unit. menu

DIY shredder

Despite the fact that the Zubr garden shredder is considered one of the most useful units in the economy, its cost is quite high, and not every cottager and even a farmer will easily decide to buy it. There is always an alternative. you can make a shredder of branches with your own hands. Of course, self-made may be less productive, but its cost is significantly lower than that of the factory product.

Today we will try to answer the question of how to make a grass chopper with their own hands from improvised and inexpensive means. to the menu

Garden chopper with their own hands from an angle grinder

Homemade shredder in terms of design is not much different from the ones that we offer today’s market of agricultural machinery. The function of the hopper can be any old metal container of large volume. a bucket, pot or barrel. In the bottom of the container should be drilled in advance a functional hole for the device that drives the knife group.

We will use the easiest way and make a motor from an angle grinder with their own hands.

For the cutting mechanism you can make it yourself or buy a ready-made one. we recommend it. However, if you plan to make the blade assembly with your own hands, the best solution would be to use a metal plate with a sharpened edge.

It should be noted that all homemade garden devices should be characterized by reliability and stability, especially if their design involves the use of knives.

We offer the following variant of construction:

  • directly a branch chopper assembly. a hopper with an angle grinder and a knife unit attached and securely fastened;
  • A metal frame, made of a tube and having a sufficiently large weight, in which the device we made will fit;
  • protective cover for the hopper.

The same principle can be used to create your own shredder of apples, root vegetables, grapes with your own hands. For smaller products, a regular drill can be used as an alternative to an angle grinder. This tool also has enough power to set in motion the knife block and ensure sufficient productivity of the homemade shredder. to the menu

Garden shredder for grass and branches with their own hands

On the garden plot you can not only work, but also rest. In any case you will have to clean the garbage on the plot. So, tree branches, potato haulm, raspberry stems. all of this we pile up, waiting for the garbage to dry. Then it is set on fire. But only the most calculating owners know that from such garbage can be obtained a quality fertilizer for the plot. To do this, you will need to shred debris with a garden shredder, which is easy to make with your own hands.

The garden shredder makes it easier to work on the plot. Any crop residues can be shredded to a small chaff by the gardening equipment.

Principle of a shredder of branches

The principle of operation resembles a meat grinder. So, a small branch can be processed into sawdust in minutes. To do this, a branch is passed through the shredder, and the output is a chip.

The hopper, where materials for processing are placed, eliminates the ingress of clothing, hair, body parts. The shredding system is a mortise and many knives. Shafts are available in a variety of thicknesses.

For example, to shred 3 centimeters thick branches, an 8 centimeter diameter shaft is the right choice. The motor power also plays an important role. So, for shredding branches with a diameter of up to 5 centimeters, you need to install a 2.8 kilowatt motor.

So, let’s assemble the garden shredder. First you need to find the right parts. Self-made device will not differ from the factory shredder. The circular saw can be used to make a shredder.

It is only necessary to change the discs to the cutter and the shaft. We attach the receiving hopper. You can also use saws, only then you need to place several pieces of them on the shaft.

The first thing to do is to buy a motor. An electric motor is a great option. It has enough power to get the job done. In addition, the unit does not produce much noise or exhaust fumes. To assemble a good cutting shaft, you need to use at least 10 saws, with a thickness of up to ten millimeters. On the stud put on the saw. We use nuts and washers, which will fasten the saws.

Let’s weld the shredder‘s frame from profiled metal pipes. Next, attach the shaft so that it can move relative to the discs. Steel sheets can be used to weld a cover on the saw.

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Galvanized steel is used to make the hopper.

Self-made shredder of branches has advantages over factory-made counterparts. For example, you can shred not only grass and branches, but also some waste products (fruits).

Also note that it is possible to process larger debris. This means that the productivity of a homemade device is higher than the factory unit.

Garden twigs shredder from an angle grinder with their own hands

And the cost of a homemade device will be less. In general, there are many variations of homemade shredders. It all depends on your imagination and ingenuity.

Classification of shredders

Planning to create a garden chitter, it is necessary to have an idea of what thickness of wood waste you will have to deal with. Since all shredders of organic waste can be divided by the power of the electric motor and the principle of operation of the knife block, the maximum diameter of wood clippings affects the choice of design, operating parameters and technical characteristics of the unit.

According to the type of power plant used

Garden shredders can use both electric motors and internal combustion engines. The advantages of the first. simplicity, compactness, ease of operation. Nevertheless, with a gasoline or diesel-powered power unit, you can create a truly mobile unit, and their power allows you to process branches more than 10 cm thick.

Chippers with an internal combustion engine have high power and are more mobile than electric units

In a homemade design it is easier to apply an electric motor. This eliminates the need for additional nodes to ensure engine starting and heating, reduces the final cost of the mechanism, simplifies installation and operation of equipment.

When choosing an electric power unit, it is necessary to take into account the following factors:

  • motors up to 1500 W can be used for small amounts of work and a thickness of twigs not more than 2 cm;
  • 3 to 4 kW power plants are the best choice for country houses with small gardens. With their help it is possible to crush branches with a diameter of up to 5 cm, which is quite enough for a small private household;
  • Electric asynchronous machines 6 kW and more can process thick branches (10 to 15 cm) into wood chips for a long time and are recommended for large farms.

The electric motor provides the homemade shredder with simplicity and low cost

It should be noted that powerful electric motors require connection to three phases. If you use a conventional two-phase network voltage of 220 V, then the best way out of the situation is a gasoline or diesel power unit. Its power of 5 to 6 liters. с. will be enough in most cases.

By the design of the knife block

The design of the blade unit of the garden shredder determines the diameter of branches that can be shredded, and what size of the processed chips will be obtained at the output of the machine. For example, the simplest devices can only process thin branches, cutting them into pieces of 2 to 10 cm, while more sophisticated devices are able to crush thick branches, grinding them into dust or producing pieces of length 10. 15 cm.

The design of factory knives is most often presented in three variants:

    disk-blade unit, which is used for grass and twigs no thicker than 2 cm;

Garden shredder with disc-blade block has a simple construction, but is unable to process thick branches

The use of cutters allows you to work with any organic debris

Application of combined turbine-milling or screw cutting units ensures high productivity of the device

In homemade designs, it is difficult to repeat the auger or turbine-milling design, so craftsmen take as a basis one of the following schemes of the cutting unit:

All three options are available for replication at home and require a minimum of cost, as they use parts and assemblies from old automotive and agricultural equipment, sections of angles, pipes, etc. д. As for the purchased items, without them you can not do. If you don’t have the electric motor, circular saws or cutters or other parts in stock, you’ll have to buy them.

The composition of the designs, features of construction

Chopper of branches and grass. an indispensable assistant in the work on the garden and in the garden, but its purchase is associated with significant monetary costs. And since the shredder is not structurally complicated, you can assemble it yourself from old equipment and available materials.

The garden shredder consists of the following main assemblies:

shredder, branches, angle, grinder, their
  • Electric or gasoline engine;
  • stationary or removable knives installed on the working shaft;
  • metal or wooden frame;
  • A container for the cut vegetation;
  • protective cover for safety;
  • a box for the exit of the recycled mass;
  • start and control system.

Tank for loading the cut vegetation is usually made round, made of metal or thick-walled plastic. A large pot, an iron or plastic garden barrel, or the body of an old washing machine will do. The flap must be fitted with a cover to protect your eyes from flying particles. The box, which is needed for discharging the shredded waste, is bent from sheet metal.

The principle of the shredder is that the rotation of the motor shaft is fed to the knives directly or through a chain or belt transmission. The shredded vegetation goes into the box for discharging the grass.

shredder, branches, angle, grinder, their

According to the principle of operation, some garden shredders are similar to auger meat grinders, while others are like coffee grinders with knives. Electric or gasoline internal combustion engines (ICE) from old, unused machinery are used as the drive. Models with an internal combustion engine are more convenient for their mobility. no need to be tied to the power grid, but they are much more expensive to produce and more difficult to use than electric motors.

Grinder with their own hands out of the angle grinder how to do it

To find on the market of agricultural machinery cheap grain grinder is not easy. Many people prefer to create this very useful tool with their own hands. For this you only need to have some turning skills. To create a grain grinder you will need a welder and any old household appliances.

Making a grain grinder with your own hands

Don’t rush to throw away your old vacuum cleaner. His motor will be perfect for creating a grain grinder. In addition to the vacuum cleaner, you will also need a sheet of plywood, a strip of metal to make the working chamber of the grain crusher, a steel plate that will act as a knife, a hopper for the grain, pins made of wood, nuts, washers and a bushing.

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For the convenience of assembly you can make a drawing of the grain grinder yourself or use a photo of an already made machine. First of all, it is necessary to prepare the base of the future grain crusher. For this purpose is quite suitable sheet of plywood, from which you need to cut a square with sides of 3 m. The electric motor from an old vacuum cleaner is mounted on top. The engine shaft must protrude 40 mm outward in this case.

The main working element of any grain grinder is the knife. Rotate this element at high speed and grind the grain. Grain crusher blade is made separately. A steel plate is suitable for this. You can use the car holders or any other similar parts for this purpose.

Sharpening of the knife should be done in the form of a blade. leading edges should be machined in the direction of the axis of rotation of the knife. The shape of the blade may vary. It can be shaped like a propeller. Vertical and horizontal appearance of the plate is adjusted by means of an emery. It is necessary to drill a technological hole in the middle of the element. Diameter of this hole should fit the shaft of the vacuum cleaner motor. The blade is fastened to the threaded tail by means of a sleeve, a nut and also two washers.

To equip the chamber in which the grain is crushed, you can use a strip of metal, about 700 mm long. For fixing the metal strip you will also need a margin of 10-15 mm. Metal strip should be rolled into a ring so that its ribs bent outward around the perimeter of the working chamber. The width of the flanges should not exceed 10 mm. This is necessary for attaching it to the base and then mounting the sieve.

For reliable fixation of the grain grinder it is necessary on the underside of the chamber at an equal distance from each other to fasten 3 pins. The diameter of the holes of the sieve can be any, it will depend only on what result you plan to achieve. To grind grains into flour, you need a fine mesh. For a coarser grind you can use a sieve with larger meshes. For mixed vegetables special perforated discs are suitable.

Grain into the working chamber will be fed from the hopper. The hopper is mounted on the base of the grain crusher. It must be fitted with a grain flow control damper. A bucket, pot or tank can be used to collect the finished product under the sieve.

To make a crusher with their own hands, you will need a stator and rotor. The box can be used as a support for the whole unit, on which the electric motor is to be installed. The body of the homemade mill is usually a simple round box, with a diameter of 300 to 340 mm. The bottom of the grain crusher is equipped with a special side. the stator. Top of the construction is closed with a lid. Inside the body of the grain grinder is the actual mill and the motor.

The mill is mounted in such a way that the bearing of the machine slides on the shaft. The rotor, which rotates at up to 3,000 rpm, is installed on the shaft. Screws are used to fix a hopper on top of the body. For convenient feeding of the raw material a flap can be installed. The finished product will come out of the machine through a tarpaulin dust sleeve. It is also necessary to additionally make holes for extraction and feeding of grain.

Making the rotor and stator

A sheet of metal about 5 cm wide is suitable for making the stator. This metal strip must be bent around the circumference and placed in a mold for casting. Pour aluminum from one end to make a bowl. The detail must be given a ribbing. To do this you need to cut some angles and weld them to the inner side. In the middle of the mechanism it is necessary to make a hole for the shaft.

A 3 mm thick sheet of metal is suitable for making the rotor. From a sheet of metal you must cut a circle with a diameter of 320 mm. From the edge of the circle you need to measure 20 mm and again draw a circle. The obtained shape is to be divided into 32 equal parts. Into the central part of the rotor we weld a sleeve with a diameter of 30 mm and a length of 45 mm. To make the construction work, the stator needs to be mounted on the shaft. The rotor is then doweled. All parts are fastened by means of a stud through the bush hole. The lid of the housing must be closed with screws.

Grain crusher based on a washing machine

From an old washing machine, it is very easy to make a convenient and powerful grain grinder. Such a machine will operate on the principle of a coffee grinder. In addition to the old washing machine you will also need an additional electric motor, some steel plates for making blades, a metal corner, M8 swivel bolts with nuts, frog locks, three-liter tin cans, door, hammer, chisel and Allen keys. Washing machines may differ in size, starting mechanism and the device of the drum.

The degree of product grinding will depend on the size of the cells. Grinding speed depends on the power of the mechanism and the sharpness of the knives. The knives rotate inside the drum at high speed. The grinding process is most intense at the walls.

Advantages and disadvantages

The advantages of chippers include:

  • the ability to process large amounts of wood and other materials into a homogeneous, loose material of a stable fraction.
  • Versatility, variable chip size.
  • Variety of drive mechanisms. the possibility of installing electric or gasoline engines.
  • Compact size, not much space required for installation.
  • Need for power or fuel supply for internal combustion engines.
  • High-capacity motors and strong cutting surfaces are required for processing large quantities.
  • The machine design is continuously under severe strain and requires frequent maintenance.

An additional and important disadvantage of chippers should be considered a high price. The cheapest models cost about 50-60 thousand and more powerful models are much more expensive. This is the main reason to prefer independent creation of chippers.

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