Do-it-yourself branch chopper - how to make a crusher according to drawings

Description of the wood and log shredder, scope of application

When working with wood, waste always appears. Crushers are units that transform large pieces of wood into a fine mixture. The use of machines can increase labor productivity and reduce worker injuries.

Reference! Automation of raw material processing by the forestry industry has reduced the amount of waste disposal by 50%.

The tree shredder is used in production and gardening. It comes in several types:

• rotary;
• hammer;
• disk and cone;
• screw and roller;
• ball mill.

Installations can be mobile or stationary. Large amounts of waste are processed using powerful crushers. Utility farms can cope quite well with mobile units with low power.

The equipment will help grind wood waste after trimming branches, leftover building materials, and old furniture. The crushed raw materials are used for mulching or fertilizing beds.

You can use environmentally friendly types of wood for soil. Furniture waste contains harmful components. They cannot be used to fertilize plants.

Working principle of wood chipper

The unit turns wood waste into chips or granules of the same size. By crushing, a suspension from 0.6 cm to larger pieces is obtained. Grinding produces granules smaller than 0.5 cm.

There are several principles by which grinding occurs:

• Bending and breaking of raw materials.
• Trituration.
• Grinding with a strong blow.
• Fixation of raw materials with shift.
• Compression with crushing.
• Splitting and grinding.

The processing process involves capturing wood with toothed shafts. It is transferred to the grinding chamber. Through outlet sleeves, the finished raw materials are placed into containers.

Subtleties when choosing an engine for a shredder

A certain engine power provides the required performance of the shredder. When choosing an engine, you should be guided by some important rules:

1. For small branches, you should choose a motor with a power of at least 2 kW. The higher the power rating, the greater the productivity and technical capability of the shredder.
2. To grind soft waste in the form of grass and leaves, a 1.5 kW motor will be sufficient.
3. The power of a gasoline engine should not be less than 6 hp.
4. Do not use overly powerful motors over 3.5 kW. They consume a lot of electricity, but the maximum performance of the unit is not achieved.
5. The engine speed does not have a big impact on the performance of the chopper. What is important here is the rotation frequency of the knives, which is ensured by a V-belt drive.
6. To reliably chop branches, the blade shaft should be set to a speed of no more than 1500 rpm. This occurs due to the correct selection of the diameters of the driving and driven pulleys.

When working with a shredder, you must wear personal protective equipment - goggles and gloves.

Helpful advice! It is better to make pulleys for belt drives with 3-4 grooves. This will allow you to change the speed on the shaft by moving the belt, which is necessary for different operating conditions of the chopper.

Types of DIY Gardening Devices

All homemade products can be divided into 3 types :

• wood chippers;
• mulchers;
• shredders.

Chip cutters are designed for chopping branches and completely dried large green mass, that is, thick stems.
They are poorly suited for processing and grinding fresh or slightly dried green mass, that is:

• leaves;
• herbs;
• tops

More often the chipper is made in the form of a rotary chipper . We talked about how this device works, its operating principle, and how to make it yourself, and showed it on video in these articles:

• Chip crushers;
• Do-it-yourself chipper.

A homemade device of this type effectively grinds branches of a certain thickness, turning them into small chips that can be used as :

• decorative and agrotechnical mulching of garden plots;
• coloring and flavoring when infusing alcohol;
• fuel for smoking various products;
• feeding for animals and birds;
• fuel for boilers and furnaces.

The mulcher is designed for chopping fresh and dried green mass, but is not suitable for processing dry tops and any branches. Its basis is the line cutting module, which we talked about here.

Chopped green mass can only be used as decorative or agricultural mulch , which is where the name of the device came from.

The shredder is designed for coarse chopping of branches, so the finished wood chips are used only for heating.

Industrial shredders provide the ability to produce chips of normal size, but in home-made devices, the most important quality is considered to be simplicity of design and ease of manufacture, which causes an increase in the size of chips.

Creating a chopper with a set of circular saw blades

The grinding mechanism of such shredders consists of circular saws, which are alternately mounted on the shaft with separating washers. Each disc has many teeth that can handle even hard wood. Therefore, it will process soft grass, tops and leaves in a matter of minutes. When saw teeth become dull, they can be easily replaced with new ones.

Drawing of a chopper with a set of circular saw blades

The shaft for the chopper can be turned on a lathe or used ready-made from the gearbox of an old car. The distance between adjacent saws should be about 10 mm. If the gap is smaller, it will reduce the working area of ​​the shredder. If you create a larger gap, this will encourage small branches to get stuck.

Helpful advice! The saw teeth should not be placed on the same line when fixing them on the shaft. It is better to install them chaotically. This reduces the load on the shredder shaft and electric motor.

It is better to use an electric motor, which is practically silent during operation and does not emit harmful substances into the atmosphere. To crush coarse material, you can use a walk-behind tractor, which has great power. The engine should be placed on a movable support so that the drive tension can be adjusted.

The frame for the shredder can be welded using channels, angles or profiled metal pipes. A thrust beam made of a metal profile can be welded to the base of the structure, which will become a support for stems and branches during crushing. When creating pedestals for bearings, it is important not to distort them. The axes of the motor and shaft must be in parallel planes.

Pack of 15 M20 pin saws

The design of the bunker deserves special attention. It can be made from sheet metal. The container should be strong enough to withstand the impact of flying chips from branches. Using a movable support plate in the body of the hopper, it is possible to adjust the size of the chips. So, smaller fragments are suitable for fertilizer, and larger chips are suitable for kindling.

The size of the receiving socket should be larger than the length of the arms to protect them from damage. This also makes it possible to guide the branches into the shredder at a convenient angle.

This DIY garden shredder of branches and grass can cope with both soft waste and hard, thick wood. However, its main problem is the clogging of the space between the saws, which needs regular cleaning.

Materials and tools

Most of the components of the shredder can be selected from supplies available in the household. For example, the frame is perfectly assembled from metal corners, channels and pipes. An electric motor is usually purchased or taken from a mini-tractor. The cutter used must necessarily have large teeth, and the circular saws must have a diameter of 100 to 200 millimeters. If the work is done on a shaft, then gears are purchased in quantities of a couple of pieces, the same applies to the pulley, as well as to the shaft itself - there should be two of them. Knives can be made from car springs if you have a milling machine.

The tools you should prepare are a hammer drill, wrenches, a grinder, as well as a welding device and a set of fasteners.

What else can a chopper be made from?

When making a branch chopper with your own hands, any household appliances can be useful. When many home appliances reach the end of their useful life, they can be reused with some modification. The main necessary element is the engine; you just need to modify it and the mechanism acquires a second life in a new useful device.

Wind chopper from a walk-behind tractor

To give a second life to the design of a walk-behind tractor that has expired, it is necessary to prepare the following materials:

• walk-behind tractor directly
• knives
• shaft
• bearing set
• channel
• a set of keys
• grinder for cutting and cleaning work
• sheet metal
• drill and jar
• hammer and electric planer

During assembly, the following manipulations should be carried out:

• A frame is formed from a section of channel.
• A shaft from an old electric plane is installed on the bed.
• A knife and a pulley are attached to the shaft to transmit torque from the engine.
• The torque from the walk-behind tractor is transmitted to the pulley using a belt.
• A receptacle for branches is formed from sheet metal by welding.
• The entire assembly is installed on a prepared walk-behind tractor and carefully secured.
• We start the mechanism, feed the branches into the shredder, the chips fall down where you can place the container.

Chopper from a set of circular saws

A do-it-yourself chopper made of this design is classified as the simplest. In order to power it, you need to select a motor with a power of up to 4 kW. The main cutting element consists of several circular saw blades, generally their number varies from 20 to 25.

Saw blades

The knife discs themselves are cutting blades with many teeth, onto which special carbide inserts are soldered, thanks to which the tool acquires increased characteristics. The knives are directly installed on a pre-made shaft up to 80 mm long, on which threads are cut on both sides to secure the tool.

Read also: Planer and sherhebel differences

Washers are placed between the discs on the shaft to separate them, since the saw teeth have a slight deviation from the plane to increase cutting properties. Due to the divergence of the teeth, placing the disks close together becomes impossible, so a washer with a diameter of 20 mm becomes a necessary element in the design.

Frame design

The electric motor is installed on a frame made from corners with your own hands using welding; a frame is attached to it directly under the shaft with cutting discs. Holes for bearings are made in the necessary elements, the shaft is inserted into them and secured.

Start-up

The loading conveyor is made of galvanized steel. Pre-cut sheets are fastened with rivets into a pyramid truncated at the top and attached to a frame on which saw blades are mounted. Pulleys are attached to the shafts of the engine and cutting tools, then belts are put on them, with their help the movement from the electric motor will be transmitted to the saws.

We supply power to the drive, branches and debris are loaded into the receiver, a set of disks grinds the material into chips, which fall down.

Important! During operation, safety requirements must be observed.

Shredder design for branches and grass

The purpose of the unit is to quickly and safely grind plant debris. The main function is performed by the cutting block. The knives are driven by the engine directly or via a belt drive. The units are installed on a stable frame. The moving elements are covered with a casing. Two compartments are made for feeding branches and unloading chips.

Metal frame

A homemade shredder with a powerful electric or gasoline engine needs a stable, durable frame with space to install the engine and a rectangular support for the cutting unit.

To make the shredder frame use:

• profile pipe 25;
• corner at 30;
• channel.

Fasteners:

• ears for the engine,
• nuts,
• hairpins.

Engine

Full autonomy, work anywhere in the garden, independence from the outlet - the advantages of a gasoline engine. A homemade shredder for processing branches, tomato tops, and grass is equipped with a motor from a motor-cultivator or walk-behind tractor with a capacity of 6 liters. With. It is moved from one unit to another.

You need a gearbox that provides 90° rotation if the gasoline engine has a horizontal shaft and the chopper has a vertical shaft.

Electricity costs are lower than gasoline, so if there is a network on the site, an electric motor is installed on the unit. To chop branches 2-3 cm thick, a 3-phase electric motor of 2200-3500 W is sufficient. When making a low-power grass cutter, they take engines from household devices. They are removed from washing machines and vacuum cleaners.

Knives

The thickness of the branches processed by the shredder depends on the design of the cutting unit. In home-made designs, several options are implemented:

• to grind branches with a diameter of 7-8 cm, several cutters are installed on the shaft;
• hammer-type cutting block for grinding thin rods;
• the universal cutting mechanism is made of 15-30 circular saws mounted on a shaft;
• knives from factory garden equipment - brush cutters, lawn mowers;
• chop grass - trimmer line;
• stump crusher from a plane;
• two shafts with 3-4 steel knives for cutting branches of bushes and trees.

Garden herb grinder from a grinder

A simple device that requires a little time and effort can be assembled using an engine from a grinder. The main actions are:

An iron frame is made from angles on 4 legs

A metal sheet is placed horizontally and welded to which the angle grinder is attached with the rotating part up

A metal tank or large bucket with a hole for the engine is placed on top

A hole is cut on the side to remove the finished mass. Fitted with a tin sleeve for convenience and proper direction into the receiving container

The knives are attached directly to the motor shaft so that the housing walls do not touch

The safety of working with this device depends on the stability of the iron frame.

Common options for the simplest do-it-yourself branch choppers

Although it may initially seem that making a garden wood chipper is very difficult, but in fact this procedure is not difficult for a person who knows how to handle power tools.

You need to start making a garden shredder by preparing a detailed drawing. The sketch indicates the dimensions of each part and assembly that will become the basis of the tool. Making a drawing will simplify the procedure for building a chopper with your own hands. The photo below shows examples of drawings developed independently, on the basis of which the working tools were designed. They can be used as a basis for the production of your own modifications of shredders.

Diagram of a garden shredder with two drums

Diagram of a garden shredder with two drums Diagram of a disk shredder of branches

As a rule, few of those who decide to make a garden shredder on their own tend to spend a lot of effort, time and money on it. That is why the material discusses the simplest types of garden shredders, the construction of which any master can handle. The most common options for shredders are:

1. From Bulgarian.
   Every craftsman has this indispensable tool on his farm, from which you can make not only a circular saw, but also a branch chopper. The advantage of this tool is its powerful electric motor. It will be interesting for everyone to know how to make a garden shredder for branches from a grinder.

   

2. From an old washing machine
   . If you plan to dispose of your washing machine, then we recommend holding off on this matter. After all, this device can be used to make a quite decent shredder of small branches and grass.

   

3. From a circular saw
   - if the farm has this tool, then it can be used not only for sawing large logs, but also for chopping small branches, producing wood shavings and wood chips.

   

4. From a drill
   — the capabilities of this universal tool can be expanded by making a garden crusher out of it. All you need to do is secure a two-blade knife in the chuck.

   

5. From a gasoline engine from a walk-behind tractor
   - if the farm has a powerful electric motor, then it can be used to make a good shredder for crushing small and large branches.

   

Next, we will look at the instructions for making garden crushers for branches and grass with your own hands. Based on the options presented, you can choose the best one for yourself to implement at home.

Instructions for making a garden shredder from a grinder with your own hands

A large number of revolutions of a power tool such as an angle grinder can be used to chop small branches. To make a garden shredder from a grinder, you need to follow these steps:

1. Take a steel plate 2-3 mm thick and 150x300 mm in size, and make a blank from it. To do this, you need to drill a hole with a diameter of 100 mm in the central part. To do this, you can use a drill, grinder and file.

   

2. Drill 4 holes with a diameter of 4 mm around the perimeter. They are needed to secure the plate to the grinder.

   

3. Using studs, nuts and washers, we attach the plate to the angle grinder.

   

4. We fix the tool to the sheet with additional steel plates using a welding machine and bolt connectors.

   

5. A rectangular hole is cut in the sheet, which is needed to feed the branches to the rotating disk.

   

6. As the cutting part we use a 4-blade disk from a trimmer, attached to the tool spindle.

   

7. The working part of the tool is ready, so all that remains is to make the body and test the unit. We use an old OP-35 fire extinguisher as the base for the body. Cut off part of the fire extinguisher and weld to it the mechanism obtained earlier from the grinder.

   

8. The remaining projections are covered with steel plates.

   

9. Weld a cylindrical base to the resulting hole, into which the material for grinding will be fed.

   

10. At the final stage, weld the legs to the resulting tool and begin testing it. To avoid having to collect sawdust from the ground, place a bucket under the lower part of the tool.

    

The resulting grinder for branches can also be used for crushing various plant debris, such as flowers, grass, etc. As you can see, the procedure for making a crusher from an angle grinder yourself is not at all difficult and does not take much time.

Another version of a garden grinder made from a grinder is shown in the photo above. To make such a tool, you will need to put in even less effort. The disadvantage of structures made from angle grinders is the need to supply branches to the chopper in small quantities, so you have to spend a lot of time. However, this method of disposal is much more effective than chopping small sticks manually using an ax or pruning shears. Below is a selection of options for homemade shredders that can be used as a basis when designing your own tool.

Grass chopper made from an angle grinder and a tin can

Grass chopper from an angle grinder and a tin can A simple grass crusher from a grinder

How to make a garden shredder for branches from a washing machine

To make a branch chopper from a washing machine, you will need a tank that will act as a hopper. In the central part of the tank, drill a hole of the appropriate diameter for the electric motor shaft. The cutting element is attached to the shaft and securely fixed. Knives can be made from high-speed steel.

The electric motor used from the washing machine has very low power, so the resulting design should be used for grinding small branches and grass. It is important to consider that the hole in the tank through which the ground branches and grass will come out must be of small diameter. The larger its diameter, the smaller the size of the crushed fractions.

How to make a chopper with your own hands

From the washing machine

The spacious tank will serve as a housing and a loading hopper at the same time. A hole is drilled in the center for the motor shaft, to which the cutting part is attached. If you install a powerful motor, then a self-made branch shredder will easily grind thick branches. A small hole is made on the side to remove the finished mass.

From circular saws

To make such a mechanism, you need to place at least 20 circular saw blades onto a shaft. Plastic washers are inserted between them. A welded stable frame, a main body where the cutting tool and a receiving hopper are installed, are also required. You need angles, sheet steel, fasteners and a welding machine. The motor is connected to the shaft by a belt drive

It is necessary to monitor the location of the disks; they should go in a “herringbone” shape. This makes them easier to clean and they move evenly without jumps.

From a walk-behind tractor

Using this device for crushing branches is much better than using a motor cultivator. The walk-behind tractor has a powerful fuel engine and moves on wheels, almost like a mini-tractor. Its main frame will be a channel. A loading hopper, a pulley with belts and a disc blade installed at a certain angle are added to it. So that the machine cuts branches at a good speed

It is better to use a three-phase motor to get good power

Drawing up a drawing

In order to avoid having to redo a partially assembled garden apparatus, it is necessary to correctly draw up a drawing, taking into account the size and shape of all available parts.

Numerous forums will help with this, where users
discuss the most successful configurations and technical solutions .
In addition, they also share their experience of independently manufacturing garden waste and garbage shredders, posting not only drawings, but also photos and videos of their devices, and also leave feedback on their work.

When drawing up a diagram, you can determine the location of mounting holes and welds . This will allow you to first make individual parts with pre-drilled holes, and then attach the corresponding units to them without adjustment.

Ready-made drawings can be found on the Internet, after which, based on them, you can make a new drawing with dimensions, which will take into account the features of the available parts and mechanisms .

The main advantage of this method is that it eliminates the need to independently determine and calculate the overall configuration of the finished device and the location of the main elements.

Here are drawings of some devices that can be used as basic ones:

1. Drawing 1 - This is a standard design for a stationary rotary chipper that works well as a garden chipper.
2. Drawing 2 - This is the design of one of the shafts of a two-roll shredder. With some modifications it can also be used in single shaft shredders.
3. Drawing 3 – Design of a two-roll shredder.
4. Drawing 4 – Drawing of a grass chopper with an electric motor, however, instead of an electric motor, you can install an angle grinder or a drill.

Types of cutting elements for homemade shredders

The thickness of the grinding of the branches depends on the knives used. Home shredders are equipped with different types of chopping attachments:

• lamellar (with one or more plates);
• disc (with two or more blades);
• milling

Flap knives are essentially flat cutting elements. Rotating, they very finely grind all plant waste into pulp. When processing large branches, such blades require frequent sharpening.

Disc cutting structures are designed for soft plant waste. The simplest such knife is a disk with two horizontal blades. They are used to chop grass and branches up to 2.5 cm in diameter. In a more complex design, there can be 4 or 6 pieces of crushing blades. Their work is usually carried out in a vertical plane, chopping plants up to 4 cm in diameter.

Milling cutting elements are a shaft with plate or disk knives mounted on it.

Dependence of the thickness of processed branches on the power of the electric motor and work intensity:

Requirements for wood chippers

To ensure that the installation meets the owner’s wishes, when choosing, you need to pay attention to the following parameters:

• power and performance level;
• degree of noise;
• operational purpose;
• equipment weight;
• design of working elements;
• dimensions of the opening for loading raw materials.

In a small area where professional tree shredders are not needed, a household installation is used. If areas where mature plants grow are being processed, then using a device with high power is justified.

Equipment size is related to power. The more powerful, the more cumbersome the unit will be.

The variety of types allows you to choose the installation. Taking into account all the parameters, you can find a unit for processing thin branches or thick logs into wood chips, sawdust or shavings.

By using a wood shredder, you will be able to avoid the loss of valuable raw materials needed for recycling in the form of paper, cardboard or furniture boards.

Do-it-yourself grass cutter driven by an angle grinder

I have birch trees growing in my dacha. Leaves are falling from the trees. We have to clean it up, burn it, and fill up the compost pit. The foliage takes a long time to rot. I decided to chop it up. For this you need a grass cutter. I looked at what they were making on the Internet. I turned on my brain and this is what I came up with.

Do you like an inexpensive option for a garden shredder? Read the article further and find out how to make a homemade product from an angle grinder and a metal tank. Tok2Z acted like this:

• He thought about how to twist the chopper blades. The choice is small - install a motor from a washing machine, or buy an electric motor. According to the user, the motor from the washing machine is weak, and I didn’t want to purchase a three-phase unit and convert it to one phase.
• Tok2Z bought on the market, for 2 thousand rubles, an old grinder with a power of 2 kW and blades from a lawn mower for 700 rubles. I ordered an adapter sleeve from a turner, spending another 500 rubles.
• I welded the frame and placed a galvanized water tank on it. I assembled the structure and turned on the grass cutter.

The turnover is crazy. I threw a shovelful of leaves into the tank, and they blew away! I checked where the flow was going. Air goes up from the edge of the tank and is sucked in in the middle. I cut out a galvanized ring and installed it in the center of the tank. Threw the leaves. The knives crushed it just right, and it flew into the lower pipe.

To grind the grass into a very fine fraction, the user installed a corner in front of the “exhaust” pipe.

Pipe diameter 10 cm.

The grass cutter shreds the leaves directly into the compost bin.

Compare: a pile of leaves.

The grass cutter threshes everything - grass, leaves. Sometimes, along with the foliage, a wire comes across. Pebbles. Pieces of metal. The crusher crushes the stones. No iron. You have to turn it off, look for trash and throw it away. The noise is terrible. One of the disadvantages is the thin walls of the tank. It breaks through. I will redo it. I will make a tank from a sheet of iron 1-2 mm thick.

Technical characteristics of the mechanism

A feature of the market economy is a wide range of offers of such equipment from foreign and domestic manufacturers, so the buyer must know the main technical characteristics of the mechanism, which he should pay attention to when purchasing:

• Installation power. This is the basis of productivity.
• Purpose of the unit. Some are necessary for chopping branches and grass, others for crushing logs and trees.
• Type of fuel. Some run on electricity only, while others run on both electricity and gasoline or diesel.
• Installation mobility. The dimensions of the crusher, weight, and speed of operation depend on this.
• Functionality. Universal devices are used, as a rule, in everyday life and have a simple design; in such mechanisms, as a rule, there is one grinding mode; in professional ones, the level of crushing can be adjusted.

If we look at the manufacturers of industrial equipment such as crushers, one of the leading places is occupied by:

• German, "Hombak", "Maier";
• Chinese "Kefid";
• Russian and BioSphere.

Disc chopper

A drawing is being prepared to create a disk chopper.

This design of the device is simpler.

Materials and tools used for its manufacture:

• engine;
• pipes;
• sheet metal 5 mm thick;
• spanners;
• hammer drill

It is better to buy knives that are factory-made, since they contain tool steel hardened to 66 Rockwell units. To make them yourself, you need a spring, from which a workpiece is cut to the required length. First, it is heated in a forge, leveled, additionally hardened and cooled. Then sharpening is carried out at an angle of 35-45 degrees. Holes are drilled into the body and the knives are ready for installation.

Alternatively, a pipe is used as a support for the unit. A cube is formed at the top, where all the parts of the mechanism are attached, and at the bottom there are wheels.

Metal is taken and a disk with a diameter of 400 mm is cut out of it. Holes are drilled in it for installing the shaft, as well as holes for attaching knives. Then the disk is installed on the shaft and the entire assembly is attached to the motor.

The formation of the receiving compartment is carried out in the same order as for a two-shaft apparatus.

Care

Before using the equipment, you must carefully study the technical documentation so as not to unknowingly damage the mechanism. You should pay attention to the following points:

• The raw materials entering the machine must be the same size as specified in the instructions.
• It is necessary to carefully monitor the raw materials that are poured into the crusher so that stones, glass, plastic and other material do not fall into it.
• Try to avoid getting into the root mechanism with soil that is on the root system.
• To increase the life of the shredder, wood waste must be fresh.

The nuances of operating homemade equipment

Any homemade product is not always equipped with all the devices according to safety requirements. During operation, in order to avoid accidents, the following rules must be observed:

• When starting work, you should use tight-fitting gloves, glasses and a hat; It is strictly forbidden to push branches and debris with your hands; for this you can use the next batch of tops.
• The diameter of the material to be crushed must not exceed that allowed by the engine power; Do not allow hard materials to enter the cutting blade hopper; they can damage the blades and damage the engine.
• If branches get stuck in the drum, the unit is completely de-energized, and only then are the stuck pieces removed.
• The power wires are laid in places where branches will not lie and wood chips will not fall.

Correct and long-term use of a hand-made branch chopper is possible not only if operating conditions are observed, but also with proper storage. After chopping, the knives are cleaned, and the device itself is put away in a shed or under a shed, and the knives are sharpened if necessary. Almost anyone can build a branch crusher with their own hands, the main thing is to have an engine and the necessary metal blanks.

In the garden plot you can not only work, but also relax. In any case, you will need to remove debris from the site. So, tree branches, potato tops, raspberry stems - we put all this away, waiting for the garbage to dry. Then they set it on fire. But only the most prudent owners know that such waste can be used to obtain high-quality fertilizer for the site. To do this, you will need to shred the garbage using a garden shredder , which is easy to make with your own hands.

A garden shredder makes work in the garden easier. Such garden equipment allows you to process any plant residues into fine dust.

Operating principle of a wood chipper

The operating principle is similar to a meat grinder. So, a small branch can be processed into sawdust in a matter of minutes. To do this, a branch is passed through the chopper, and the output is wood chips.

The bunker where materials for recycling are placed prevents clothing, hair, and body parts from getting inside. The grinding system consists of cutting and many knives. The shaft can be of different thicknesses.

For example, to grind branches 3 centimeters thick, you need to choose a shaft with a diameter of 8 centimeters. Engine power also plays an important role. So, to chop branches with a diameter of up to 5 centimeters, you need to install a 2.8 kilowatt engine.

Read also: History of the emergence of the turner profession

So, let's assemble the garden shredder. First you need to find the right parts. A homemade device will not differ from a factory shredder. You can make a chopper using a circular saw.

You just need to replace the discs with the cutter and shaft. We attach the receiving hopper. You can also use saws, only then you need to place several of them on the shaft.

First of all, you need to buy an engine. An electric motor is a great option. Its power is enough to get the job done. In addition, the unit does not produce much noise or exhaust gases. To assemble a good cutting shaft, you need to use at least 10 saws, the thickness of which is up to ten millimeters. We put saws on the hairpin. We use nuts and washers that will secure the saws.

We will weld the chopper frame from profile metal pipes. Next, we fasten the shaft so that it can move relative to the disks. You can weld a casing for saws from steel sheets.

Galvanized steel is used to make the bunker.

A homemade branch chopper has advantages over its factory-made counterparts. For example, you can grind not only grass and branches, but also some waste (fruits).

We also note that larger waste can be recycled. This means that the performance of a homemade device is higher than that of a factory unit.

DIY garden branch chopper made from a grinder

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.

How to make a wood chipper

DIY garden electric

The only design flaw may be insufficient safety, since the homemade chopper will not be provided with a locking system for accidental activation or a special casing covering the knives.

Safety precautions

When working on a crusher, it is necessary to follow labor safety rules to avoid injury. During the crushing process of raw materials, chips can involuntarily fly in different directions, so it is necessary to work in a mask, special safety glasses and a hat. You need to dress so that parts of your clothing cannot get into the shredder. You must wear gloves on your hands that do not slip off your hands. The main thing is that under no circumstances should you correct or remove objects that are stuck in a working mechanism.

Universal grass cutter and corn sheller

Alex Nk FORUMHOUSE

I also made a grass cutter. I mainly use it to chop grass for poultry. The basis of the homemade product is a kilowatt motor made in the USSR. I bought it for 1400 rubles. Works great. The engine is three-phase, but converted to operate from a 220 Volt network.

Making a homemade grass cutter step by step:

• Holes were drilled and threaded in the flange.

• The knives were made from a piece of an old rusty two-handed saw.

• The knives were screwed to the flange.

• The grass cutter frame was made from a sheet of metal 4 mm thick. A strip of metal with a cross-section of 4x40 mm was welded to the square, which was bent in a circle. A hole was drilled in the center of the frame.

I bent the strip with a hammer, striking the metal on the jaws of a vice. The radius was controlled in a circle by drawing it on the bed.

At the finish, the user welded the legs to the base. Fixed the electric motor. I made a large tank with a lid so that debris would not fly out of the grass cutter while the engine was running.

Homemade mobile grass cutter on wheels.

The tank is removable for ease of use of the grass chopper.

The engine produces 1500 rpm. The grass cutter operates almost silently.