Tired of mowing grass in a suburban area with a manual scythe? Then you have two options: buy a factory-assembled lawn mower or make it yourself. From the point of view of economy, the second option is more preferable, and I am ready to tell you how a do-it-yourself lawn mower is assembled from old parts.

Description of the assembly process

The electric lawnmower consists of:

1. frame, on which all functional elements are installed;
2. Engine, providing rotation of the working part of the mower;
3. knives, carrying out mowing grass;
4. casing protecting the operator's legs;
5. wheels, allowing you to move the lawn mower around the site during operation;
6. Control knobs, giving control over the device;
7. Fragments of the power system, which include an RCD (residual current device) and a cord with a plug.

Step number 1: we make the frame

To make a lawn mower with your own hands, you first need a frame:

Image	Description
	We select the material. An ideal option as a raw material for creation would be a metal sheet with a thickness of 2-3 mm.
	We cut metal. If the sheet is too large, then it should be cut with a grinder. For the idea under consideration, a square with a side of 500 mm is quite suitable.
	Making a hole. In the middle of the resulting section, you will need a through hole for the motor shaft. You can do it in two ways: Insert a special crown into the drill and drill the desired opening. But such a nozzle is not cheap, and it is irrational to buy it specifically for solving the described problem alone; Drill around the circumference of the holes with a conventional drill for metal, and then knock out the circle formed inside.

Step number 2: select and install the engine

Homemade electric lawn mowers can be equipped with motors that can be found in the household:

Image	Comments
	A vacuum cleaner. An electromechanical lawn mower is the second life of an old vacuum cleaner.
	Bulgarian. An angle grinder fixed to the frame can also become the driving force for the knives of a homemade lawn mower.
	Drill. And even drills are adapted for mowing grass.
	Chainsaw. In this case, you will get a gas lawn mower, which will free you from wires and sockets, but will tie you to buying gasoline.
	Washing machine. Another representative of household appliances, which is very often used by home craftsmen. As can be seen from the photo, the drawings were not used during assembly, the price of the parts is insignificant.

The power and the number of revolutions should be selected in accordance with the length of the installed knives. So, for example, to capture 400-500 mm, the following parameters will be enough:

• Engine power- 1 kW;
• RPM – 1500.

If the knives are shorter, then the motor will need to be more powerful and with a large number of revolutions per minute.

You should also pay attention to the fastening:

Image	Comments
	flange motor. We put it in its original position on the frame plate; We mark the mounting holes; We drill them with a drill; We fasten the motor with bolts.
	conventional engine. We install two corners from the side of the future handles, directed vertically upwards at a distance from each other equal to the distance between the ears of the motor mounts; We drill holes in them; We put the engine in its original position and fasten it to the corners with bolts.

You can improve the mounting system of a conventional engine. To do this, it is enough to drill several holes in the corners at different heights. Then the motor, if necessary, can be raised or lowered, thereby changing the height of the mowed grass.

Step number 3: we make and fix knives

For a knife, if the lawn mower is made with your own hands, a 2 mm hacksaw blade for wood is perfect.

I want to dwell on the thickness separately:

• Thin the knife cuts grass better;
• Thick the knife is better able to withstand impacts on stones.

Therefore, consider the characteristics of your site when choosing this option.

The instruction for turning a hacksaw into a working part of a lawn mower looks like this:

1. We cut the canvas in accordance with the size of the frame. In our case, this is 400 mm;
2. In the middle we drill or punch a hole for the motor shaft with a punch;
3. We sharpen the edges from opposite sides in accordance with the rotation of the motor;

If for each half of the knife the sides are bent along the cutting edge, as is done in the factory models, then during the operation of the device, the cut grass will be blown out from under the lawn mower.

1. We fasten the resulting knife to the motor shaft from the bottom side of the frame.

For fastening, be sure to use a washer-grover and a lock nut, otherwise the blades will unscrew from the vibration and fly off the shaft.

Step 4: attach the protective cover

The protective cover is a metal strip rolled into a ring and installed under the frame around the knives. Thanks to him, the operator’s legs are not threatened by debris flying out from under the lawn mower, or knives accidentally unscrewed and jumped off the shaft.

Manufacturing process:

1. Cut out from a metal sheet a strip 150-200 mm wide. If you have an old cylindrical washing machine on the farm, then to get the desired steel ring, you can cut off part of its body;

1. We bend into the ring. In this case, it is necessary that a hole be left on the side through which the cut grass will be thrown out. Here you can even adapt the grass collector for a lawn mower, which is supplied with factory models.

Step number 5: select and install wheels

As for the wheels, it is important to decide on two main points:

1. Quantity. Two wheels provide maximum maneuverability of the lawn mower. Three or four sets a more accurate distance to the ground, thereby allowing more even cutting of grass;

1. Height. Count so that the knives end up at a height of 50-60 mm above the ground. By placing them higher, you will simply bend the grass, and not mow, and lower - you risk crashing the working part into the ground on uneven terrain.

Step number 6: select and install handles

There is absolute freedom for your imagination. The main thing is to follow two rules:

1. Acceptable Height. The handles should be at a level that allows you to hold onto them without bending over. Otherwise, you will earn back pain before you even finish putting the lawn in order;

1. Correct location. If you are assembling a lawnmower with three wheels, then the handles must be installed on the side of two. Then you can easily turn the unit by simply lifting the front wheel.

The handle from an old wheelbarrow or baby stroller can solve this problem.

Step number 7: install the elements of the power system

Responsibly approach the manufacture of the lawn mower in terms of arranging the power supply, since electric shock is the second greatest danger during its operation after the possibility of blades flying out.

Adhere to the following rules:

1. Pick up the cord. Fasten with electrical tape along the handle - this will protect it from debris flying out from under the unit;

1. Install the start button on the handle;

1. Insulate carefully all wire connections. In particular, this applies to the connection point of the RCD.

Conclusion

You have read the step-by-step assembly of a homemade lawn mower. The video in this article contains additional material related to the topic discussed. In the comments, you can ask any questions that interest you.

Every owner dreams of creating an island of family well-being, a beautiful well-groomed plot, using a minimum of manual labor. Do-it-yourself lawn mower is one of the ways to rationally use knots from abandoned mechanisms. The resulting tool not only saves money, but takes into account the characteristics of a particular lawn. Depending on the need, the craftsman can create a tool with manual mowing, electric drive. The use of various types of cutters, wheels, their layout leads to unusual solutions. Read about the popular on our website!

Motivation to create a tool from improvised materials

First of all, it is necessary to determine which tool will effectively replace the usual manual scythe when caring for the site. It is possible that dense planting, frequent bushes and flower beds will not provide access to the mowed area, and then the “whirlwinds” of grass will need to be removed manually. A do-it-yourself lawn mower needs to be assembled to mow an area of ​​​​more than 4 acres.

Choosing how to drive the torches is the basis for assembling the necessary components. Knives can be set in motion:

• due to manual action, pushing the mechanism forward, which requires great physical strength;
• using electric energy of single-phase or three-phase current;
• battery motor;
• using an internal combustion engine, two or four stroke.

Having decided on the energy component, you will need to choose wheels, a handle, a platform for collecting a lawn mower with your own hands. Assemble the necessary fasteners and components of the connection, protection and connection diagrams.

Principles of using electric motors

The electric motor can be single-phase, powered by 220 V, or three-phase. When connecting the motor, it is necessary to follow all safety rules when working with electrical appliances. RCD protection for a single-phase electric motor must be performed, and a powerful three-phase device must have capacitors in the circuit of the appropriate capacity.

For your own hands, you can use a powerful low-speed drill with a speed of 1500-3000 rpm. It is necessary to choose the right ratio of power and swath width so as not to overload the motor. Mounted on the platform, a cordless or corded drill will create the necessary torque and the grass will be mowed. In the process of work, do not forget to observe rest intervals to cool the brushed motor. Such a tool will help to clean the local area, it folds easily and does not require a lot of storage space. The platform on which the engine is installed must be narrow so that the wall platform can be processed. Stability depends on the location of the center of gravity. The lower it is, the lower the overturning moment of the platform. How to properly cost a lawn mower with your own hands, watch the video:

When creating a tool yourself, remember that it is a means of increased danger. It is necessary to include in the circuit a blocking button that is triggered when the knife is jammed or broken. Do not work with electric mowers in wet weather, in the morning dew.

More complex models with an engine with a power of 1.5 to 6 kW are installed on a specially made sole. It is better to use an asynchronous motor, it is less noisy. The undercarriage consists of metal rubberized wheels with a wide tread so that the grass is less wrinkled. Bearing units in bushings on the axle are more reliable than plastic liners.

You can make a deck and a knife using an old frying pan and a tool steel plate. The design, when knives are attached to the mandrel, is more efficient. It is important to observe the proportions and profile of the sharpened edges, using the drawings in the photo of the lawn mower with your own hands.

Proper centering is of great importance for the performance of a high-speed assembly. A slight runout can create a strong vibration, destroy connections, create play due to the development of seats.

In the household, mechanisms and parts that have served their time always accumulate. Something can be found in household dumps of old things. Unfortunately, such cemeteries surround any residential area. Wheels from a baby stroller are perfect, and a handle from it will come in handy. How is an example of a do-it-yourself lawn mower from a Soviet-era washing machine. They were then made of strong metal. The engines from these machines are the best in terms of parameters and power suitable for use in a lawn mower.

A high-quality steel body will serve as a protective skirt and guide when grass is thrown to the side. In addition to the motor, two pulleys and a belt are used to transfer rotation from the motor to the knife drive. The motor is fixed on the platform and connected to one phase.

Such a mower works in the local area, as it is tied to the network with a power cord. You can use a special coil wire extension cord, choosing a section that matches the engine power. Such a device is produced at least 40 meters long and should provide mobility.

The use of a chainsaw engine in a lawn mower does not require additional protection. It is already made in a dust and moisture protection design. Air filters get clogged less often.

How to make a mobile lawn mower with your own hands? A tool made on the basis of a drill depends on the capacity of the battery and requires recharging in the network. In the absence of electricity, it remains to build a lawn mower based on an internal combustion engine. All small appliances that refuel with gasoline or a combustible mixture can become a donor for a homemade lawn mower.

Do you have an old Druzhba or Ural chainsaw?

Here is an example of folk ingenuity. A beautiful frame from the corner was thrown out of the warehouse as scrap metal. Special wheel assemblies with a turn of 180 0 on the hinge were found in the same place. Without such a frame, the platform could be welded. The remote working unit is made with an independent drive from the chainsaw by means of a belt drive. The torque is transmitted to the discs, where metal chains 25 cm long serve as a cutting tool. A do-it-yourself lawn mower has been effectively used for several years. An improved version with a rotary cutter and a two-wheeled frame was made. It works more productively, but is difficult to manufacture.

Each master is proud of his ingenuity and performance of the tool. However, it should be understood that the collective mind of designers creates no less functional, but safer tools.

The advantages of homemade tools include:

• saving money on the purchase of tools;
• the ability to use parts that have lost their commercial value, but are usable;
• thorough knowledge of your instrument and the possibility of its improvement and repair.

The height of grass mowing is not adjustable, and the clearing is not always cut evenly. The absence of a grass catcher increases the proportion of manual labor. A heavy tool with narrow wheels can sometimes spoil the appearance of the lawn - this is an objective answer why it is better to use a factory-made tool.

Video about one of the options for a lawn mower from a washing machine

On a suburban area, which is intended primarily for recreation and only secondly for harvesting, it is difficult to do without a lawn mower. Even a do-it-yourself electric lawn mower makes it much easier to care for the site in comparison with a scythe.

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An electric or petrol lawn mower can hardly be called a necessity.

And yet, it helps to make a neat lawn, which is not just a well-groomed and eye-catching site, but also speaks of the status of its owner. Finding an electric lawn mower that matches your preferences is not a problem nowadays.

However, such a pleasure will cost a lot, so for many, a do-it-yourself electric lawn mower is a more attractive option. To assemble a much-needed electric home-made structure, you need to spend only a few evenings, easily finding a medium-power motor on the farm: from a chainsaw, a vacuum cleaner, a drill, even a washing machine.

A home-made electrical device allows you to save a lot and enjoy creativity.

What is an electric lawn mower made of?

Of course, the most important part of it, including a homemade electric lawn mower, is the motor. Engines are capable of converting energy into any other form of mechanical energy.

They are divided into primary, which convert energy resources into mechanical energy, and secondary, which convert energy that is produced by other sources:

• chemical energy of fuel - internal combustion engine;
• fuel, i.e. during fuel combustion - a piston engine;
• igniting the compressed air mixture in the cylinders - gasoline;
• working due to the ignition of pressurized fuel - diesel, which is distinguished by low cost and the possibility of long-term operation;
• gas, functioning due to the supply of heat (with a constant volume);
• electric.

When choosing a motor, you need to know that the quality of the haircut directly depends on the engine speed: the higher this value, the higher the quality. That is, it depends on the linear speed, which is in direct proportion to the speed of the cutters: the higher it is, the greater the grip.

It is known from practice that the best option is a self-made electrical design with the following characteristics:

• motor power 1 kW;
• number of revolutions - 1.5 thousand rpm;
• capture - 50 cm. Will mow weeds and a less powerful engine - 500 kW (1500 rpm). But doing so will make it worse. At the same time, for low-power motors, knives become dull faster.

The electric mower has a convenient control handle and knives. Since the homemade design is powered from the mains, a long cord is needed. To make it convenient to work, you can’t do without wheels, which are attached to the bottom of the frame, which holds all the parts together.

For convenience, a protective cover is used.

Where to find details

For an electric mower, a motor with a power of 500 W or more from outdated household appliances, which is in working order, is suitable. It can be a vacuum cleaner, drill, chainsaw, grinder or washing machine.

The greater the engine power (ideally 1 kW), the more the home-made device will work at lower speeds. Therefore, the knives will become less blunt.

In addition, the capture area depends on the motor power, i.e. the area cut by the knife at a time.

The size of the homemade electric mower and the diameter of the knife, which is also considered one of the main parts, the quality of which affects the result and service life, depend on the chosen engine.

What should be a homemade knife?

So that the knife does not need to be sharpened often, it is recommended to make it from high-quality steel. They sharpen it to protect the motor shaft from damage, unevenly: they sharpen the edges sharply, without touching it in the place where it is adjacent to the shaft, since the grass is practically not cut off in this place, but only wound onto the knife.

Tool steel strips 20-50mm wide and 2-3mm thick is a suitable starting material for this part. Although a thick knife is stronger, a thin blade cuts weeds better.

The knife can be:

• a strip, the ends of which are sharpened and perform knives;
• consist of two knives fixed at an angle of 180 degrees with respect to each other. They can be located directly or with an inclination.

In the first variant, the length of the knife and the width of the grip are equal - 30-50 cm. The length of the knives used in the second case does not exceed 50-80 cm. There are several ways to fasten the knives - with one or two bolts. More reliable, of course, the second option. But knives fixed with a single bolt can, if an obstacle arises, fold without deforming or breaking.

In shape, it can be straight, curved (like branded electrical devices), figured (in the shape of a trapezoid). A part sharpened at both ends can be solid with a hole in the center for a screw.

The knife may be a composite structure, i.e. attached to the steel strip by welding or bolts with a sharply sharpened piece. The most unusual will be a knife, which is a sharpened solid disk.

Such a knife is the safest: an ordinary one, if it hits a stone, can break, but this does not threaten the disk.

The handle of a homemade electric mower

The handle can be made of any length and shape - at the discretion of the master. In practice, a chassis from a baby stroller is often used, which solves three problems at once, since it serves as a frame, handle and wheels at the same time. If there is no stroller, it is made from pipes or garden tool cuttings.

Whatever the handle is made of, the main thing is to choose it correctly according to the height of the person who uses the lawn mower. Its optimal length is about 90 cm.

At the final stage, a cord is connected and a net is installed that protects against cut weeds. The mesh is attached over the lawn mower. This completes the work on assembling the lawn mower, and you can proceed to its testing.

wheels

Wheels provide convenience during the work, allowing the mower to move easily. It has already been said that the best option for choosing wheels is a baby stroller. But, wheels from a vacuum cleaner, a large children's machine are also suitable. As a last resort, they are carved from wood.

Video: Homemade lawn mower

The diameter of the wheels for a homemade electric mower is selected based on the fact that the distance between the ground and the knife is 5-6 cm. This height is optimal in terms of aesthetics and the quality of lawn mowing. With a higher cut of grass, the latter “breaks” and the lawn becomes uneven. If this value is reduced, it is dangerous to work due to the unevenness of the ground.

There is no consensus on the required number of wheels. It can be 2,3 or 4 wheels.

Two wheels of a design give maneuverability, allow to cut a grass even in hard-to-reach spots. Yes, and finding them of the same diameter is easier than 3 or 4.

In the latter case, it is possible to very accurately set the distance to the ground of the knives. In a three-wheeled device, a pair of wheels is located on the side of the handle, so that the structure can be easily lifted from the front and made a U-turn by pressing on the handle.

It is more difficult to work with small wheels, which is why it is recommended to choose a larger diameter.

Additional options

These include:

• height-adjustable handle;
• grass catcher for collecting mowed weeds;
• safety bumpers, thanks to which the knife does not come into contact with the ground.

Power cable

The cord is also suitable for any household appliance. If its length is small, extension cords will help to connect it to the mains.

Frame manufacturing

The frame is made of thick plywood or metal. In order for the home-made design to be safe and less likely to need repairs, a protective cover is also needed. The best material for its manufacture would be metal.

The size of this part depends on the length of the knife. But, rarely, when the maximum width is made more than 60 cm. Taking a sheet of metal with a thickness of at least 3 mm, cut out a square of 50x50 cm (or 60x60 cm). The hole for the engine must be made in the center (at the intersection of the diagonals of the square).

The flanged motor is mounted from below directly to the self-made frame. To securely fasten the motor with ears, you will need additional fasteners that need to be welded to the frame.

The metal frame is more reliable and less prone to deformation. But, if there is no metal, you can make it from plywood or board.

The cover is necessary to prevent weed cuttings and other debris from getting on the motor shaft. The simplest option would be to use a tin can as it. If there is a desire to make the casing can be more aesthetic. The high casing will also protect the electrical mechanism.

Collecting a lawn mower

For assembly you will need the following tools:

• welding machine;
• hacksaw for metal.

The finished casing is put on the shaft, then a sharpened knife is installed, fixing the entire mechanism with a bolt. When this is done, wheels are attached to the frame, for which corners with pre-drilled holes must be welded to it.

The size of the wheels is selected in such a way that the knife passes above the ground at a height of 5-7 cm. If it is lower, it is more likely to contact the ground, and if it is higher, weeds will be crushed (not cut).

The frame is made in a curved shape. An example would be a homemade device from a drill, where a wide knife is attached instead of a drill. The drill is fixed on the handle of the frame.

The advantages of such a device include:

• lack of connection of the power cord, since the mechanism of the drill is used;
• Possibility of trimming the grass near the curbs and under the trees.

It is not difficult to come up with an attachment to the frame of a drill, but in terms of duration and reliability, a home-made lawn mower based on it will be inferior at times to asynchronous motors, which are more often used for these purposes. Therefore, for the care of large areas, they prefer the latter.

A drill is more suitable if you need to assemble a homemade trimmer.

From a chainsaw

In this case, a chainsaw motor is installed on a special frame frame welded from pipes, knives are attached. The powerful engine of such a homemade lawn mower copes not only with grass, but also with small shrubs.

Advantages and disadvantages of homemade lawn mower designs

They depend on the parts used for assembly.

The main benefits include:

• environmental friendliness;
• cheapness (since you can use any household appliance);
• noiselessness (if using an asynchronous motor).

Low noise is undoubtedly an important indicator, but given that any lawn mower, including a homemade one, makes manual work unspeakably easier, it can be endured, so any other motor will do.

It is not advised to use the engine from a vacuum cleaner due to its rapid overheating. If there is no other, you can use it. And fight overheating with the help of the right casing, made of metal mesh or having holes for air circulation.

The disadvantage of a homemade tool is a knife that is not adjustable in height. But, with certain skills, this can be corrected.

Safety during operation

Safety precautions must be observed both when working with a factory lawn mower and a home-made one, since they have knives and the tool works from the mains.

It is important to check the following before connecting the instrument to the network:

• reliability of fastening of bolts;
• sharpness of knives;
• wheel free play.

On the site to be processed, it is advisable to collect everything that can cause a breakdown of a home-made structure and injure a person managing it: wooden bars, stones, garbage. There should be no children or pets in the area.

Device usage

The lawn mower is pushed in front of you, turning off, if necessary, stopping the power supply by pulling the cord out of the socket, but without pressing the button located near the engine. Mowing wet grass is strictly prohibited.

Repair and cleaning is carried out only after disconnecting the lawn mower from the mains and its complete cooling. If the rules are followed strictly, a homemade device will last for many years.

To help those who decide to assemble a lawn mower with their own hands, the video is given below.

To assemble the home-made design needed on the farm, they often use a vertical shaft lawn mower engine, which is also used for boats and cultivators.

One- and two-cylinder engines are used, in which the shaft is located vertically, also for drilling rigs and motor drills, mini tractors, watering motor pumps, concrete joint grinders, woodworking equipment and concrete cutters. From these installations, they can be borrowed to assemble a homemade electric lawn mower.

Video: DIY lawn mower

All owners of personal plots are faced with the problem of mowing the grass, which grows literally before our eyes, and it takes several times to ennoble their plot during the season. The usual manual scythe has long been replaced by gas trimmers and electric trimmers. But the price for them is not reduced and is quite tangible for many owners of cottages and private houses. Craftsmen nevertheless found a way out of this situation and learned how to make trimmers with their own hands literally from improvised means, using gas and power tools that were not intended for these purposes.

Most often, a home-made electric trimmer is made on the basis of an ordinary grinder, which is available to every home master. This tool is almost ideal for conversion into a trimmer. It has more power than store-bought machines and a higher number of revolutions per minute. In addition, the standard nut used in the angle grinder to secure the discs already has holes through which it is easy to insert the fishing line (cord).

So, there are many options from which to make a barbell (holder). The simplest is longer than for a shovel, wooden holder. A grinder is attached to the end of it at the right angle using ordinary tape. The fishing line is inserted into 2 holes of the nut, after which it is twisted. Thus, in a few minutes you get a trimmer that can mow the grass without any problems.

For the safe operation of a home-made device, you can improve it by making a protective cover (how to do this will be discussed later).

For advanced craftsmen who have a welding machine, we can advise a more advanced design for fixing the grinder and the protective cover. It is made made of aluminum tube(serves as a holder) and a metal square profile. Looking at the figure below, you can understand the principle of manufacturing the holder.

The grinder is fixed on the holder with bolts inserted into the holes that are designed to fasten the handle to the device.

The following photo shows how this design looks from below.

By the way, you can also screw the holder (rod) to the holes for attaching the handle when you want to make a simple trimmer that is easy to assemble and just as easy to disassemble if you need to use the grinder for its intended purpose.

To make it more convenient to hold the trimmer in your hands during work, and it does not rotate around the axis of the bar, you can attach side handle made from bent pipe.

From a vacuum cleaner

The trimmer from the engine from the vacuum cleaner is made according to the same principle as from the grinder. The motor must be mounted on the rod, and either knives or a plastic or metal disk should be attached to the motor shaft, into which the fishing line should be inserted. From above the cutting tool is closed by a protective cover.

To prevent dust and small particles of cut grass from getting into the engine removed from the vacuum cleaner, it can also be hidden in a plastic casing made from a sewer pipe as shown in the following photo.

Since the motor in the vacuum cleaner is high-speed, it needs provide cooling. Therefore, under the washer into which the fishing line is inserted, it is recommended to insert a home-made disk with slotted and curved blades so that it acts as a fan that creates a vacuum. It is required so that air is sucked in through a hose from above and cools the motor.

In order to ease the strain on the hands of the mower operator, the machine can be install on a platform with wheels. In this case, you will already get something similar to a lawn mower.

You can also use either a pulley with a suitable mounting hole or a plastic wheel from a trolley to secure the line.

From a drill

The simplest mower is made in a matter of minutes from a drill or screwdriver. But first you must make a knife from a sharpened metal plate with a hole drilled in the center. A bolt is inserted into this hole and clamped with a nut.

Since the drill with this nozzle does not have a protective casing, such a tool is quite dangerous for the user. To protect yourself, you can place a drill, like a grinder (this was discussed above), on a shovel handle or on an aluminum pipe.

Also, to protect the user of the mower from knives, a casing can be attached to the drill (it is attached to a plastic pipe and put on the body of the device).

The drill is attached to the bar with clamps.

From a chainsaw

For a chainsaw, many different nozzles have already been invented that expand the capabilities of this unit, for example, a cultivator, a drill, a boat motor, as well as a scythe nozzle. You can see how it looks in this video. In case you want to make a trimmer out of a chainsaw, then the maximum that you can do is lawn mower on wheels, since the engine of the unit is quite heavy, and it will not work to apply the above-described options for manufacturing trimmers (with a lower drive location).

Therefore, the trolley is made first. It can be welded from a corner of 25x25 mm. The dimensions of the frame should be 500x600 mm. Wheels are attached to the corners of the frame.

When installing the trolley handle, make sure that it does not block the winder (starter).

The gasoline engine is mounted (screwed through the holes to secure the tire) to the frame so that the gearbox is rotated 90 degrees and the shaft is at the bottom.

Now it remains only to mount on the shaft of the unit cutting tool. This is done in the following way.

1. It is necessary to weld a small piece of pipe, 80 mm long and 50 mm in diameter, to the “asterisk” of the apparatus. It is better to cut the pipe on a lathe so that the ends are perfectly even.
2. Next, find a pipe with a slightly larger diameter - equal to 58 mm. It must also be cut to a length of 80 mm. Thus, you will get a telescopic shaft, which is connected with 2 bolts (m6) located opposite each other. Bolts must have locknuts. Below is a diagram on which the trimmer head is made, which serves to secure the cutting tool.

Several holes must be made in the telescopic tubes so that the height of the knives above the ground can be adjusted.

It is better to make a knife of such a design as in the following figure.

Due to the fact that movable knives on rivets are fixed on the disk, they will simply bounce when they meet a stone or a dry branch. This will protect the shaft and gearbox from damage that can occur when the tool jams.

The rivets that hold the knives on the disk must be metal.

The disc diameter (made from 4 mm sheet steel) should be 180 mm. Knives are made from strips 30 mm wide and 120 mm long, cut by a grinder from a hacksaw blade for wood.

DIY trimmer knife

If you need to mow plants with thick or stiff stems, then ordinary fishing line will not cope with this task. Therefore, you cannot do without a special metal knife. Trimmer knives can be bought at a specialized store, or you can make it yourself, for example, from an old circular saw blade(without soldering). The knife is made as follows.

Homemade protective cover

If you are making a homemade mower, then you will definitely need a protective cover. It will protect your eyes, body and legs from injury from small pebbles and splinters of knives if they break.

The casing for the trimmer can be made made of aluminum sheet or sheet metal.

In this way, it is possible to manufacture and install a protective cover on a trimmer purchased in a store if the shield is split for some reason. Shields in factory machines are made of plastic and often break if you unsuccessfully hit the trimmer head on the ground to lengthen the line.

Trimmer belt

For more comfortable work with the trimmer, if it is intended to process a large area overgrown with grass, it is advisable to use a special belt. This device removes fatigue from the hands and back of the mower operator and greatly facilitates the process when compared with the same work, but without a belt.

Belts are shoulder and knapsack. The shoulder strap is the simplest device and consists of a loop with two or one latch (carabiner), with which it is attached to the mowing unit. A plastic plate is usually attached to the second carabiner, protecting the operator's side from pressure from the trimmer bar.

The shoulder strap is usually used with light trimmers, weighing 3-4 kg. For heavier units, it is more convenient to use a backpack strap.

A trimmer belt can be easily ordered online or bought at a specialized store that sells these machines and accessories.

The price of backpack straps starts from 250 rubles and above.

If there is a desire to make it with your own hands, then any housewife, looking at this device, can easily sew it from improvised means (old belts and belts). You may have to buy buckles and carabiners. But still, we recommend buying a ready-made knapsack suspension and not wasting time and money on making a device that is worse in quality than the finished one.

One of the main jobs in a summer cottage, as well as for livestock owners, is cleaning and harvesting grass. Large equipment cannot turn around in a small area; small-sized convenient devices are needed. It is quite possible, if you have the skills to work with the tool, to acquire a home-made electric scythe.

Design

Craftsmen have created many options for electric scythes from scrap materials. The main components can be distinguished in the design: the engine, the cutting block, the wheel block, the handle and the frame that combines these elements.

In principle, the engine can be either electric or internal combustion. Here we consider the option with an electric motor. It is easier to manufacture and operate. Depending on the intended use of the spit - the size of the site, the type of grass, etc., as well as the availability of material resources available for work, the power of the electric motor is selected. It should be in the range of 0.2 - 0.5 kW. You can use any suitable electric motor, for example, from an old washing machine, from a vacuum cleaner, etc.

A cutting device is installed on the output shaft of the motor. It can be a steel disk sharpened along the edge, and a pair of knives directed in opposite directions. Knives can be both homemade and branded. The main thing is that they are made of good steel and do not dull for a long time. Halves from scissors are often used as knives. They are welded to the sleeve, which is put on the motor shaft and firmly fixed.

Knives can also be double-edged, sharpened on both sides. In this case, the electrical circuit must allow reverse switching on of the motor. The resource of continuous operation of the spit is doubled.

The motor is mounted on a frame. On it, axles with wheels are installed from below. The wheels can be homemade, but it is better if they are from some kind of cart, for example, from a baby stroller. The number of wheels, depending on the imagination and capabilities of the designer, can be one wheel, two, three and four. The diameter of the wheels is selected taking into account the required height of the knives above the ground.
A handle is attached to the frame. The length and angle of inclination of the handle are selected taking into account the physical data of the future user of the scythe. On the handle there is a toggle switch for turning the motor on and off. A cable is attached along the length of the handle, connecting the motor to the mains. The length of the cable is determined by the owner of the spit, usually it is 20 - 25 meters.