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How to put a knife on a trimmer

With the arrival of summer, many owners of personal plots are worried about the question related to how to put the knife on the trimmer. More pressing are the questions of why and when it is purposeful to replace the line on the brushcutter with a stronger cutting element. In our article we will try to disassemble all this and give useful tips summer residents.

Why you need to put the knife on the trimmer

A trimmer with a knife installed on it is more convenient just use for more comfortable mowing of the highest and hardened grass in the country. The line on the brushcutter in such cases does not cope. Installing a knife on a Chinese trimmer how to remove and install an old chain. The narrow one breaks very rapidly. Discussion the stihl fs 55 trimmer on the casing below I do not understand how to put the bobbin. The introduction of a thick 2.3 mm cord or homemade rods with cables forces the vegetation to wind up on the spool. This increases the load on the engine. As a result, the piston group and the rest of the moving parts of the unit wear out very rapidly.

If you create a weeds mowing with an electronic trimmer without a knife, only a fishing line, even a thick one with a curly section, will not solve the problem. There is always a risk of overheating the motor and damaging the flexible shaft. And it's all about the large torque of the electronic motor. The grass wound on the spindle makes a strong resistance to the shaft, which resembles a speedometer cable, which does not withstand and twists.

In order to protect the equipment from early wear, manufacturers have provided for the possibility of installing special knives on the trimmers. The design and shape of the existing cutting parts allows you to easily handle not only coarse and overgrown grass, but also successfully fight with young shrub growth.

What knives to put on an electric and gas cutter

Before taking and putting a knife on the brushcutter, we will find out what they are and in what cases they are used. Now manufacturers offer the consumer a huge number of types of these consumables. In general, all cutting tools designed for mowing grass can be systematized:

By the type of material from which it is made;
According to the shape of its cutting blades.

The main material for the production of trimmer knives can be plastic or metal. The introduction of such consumable parts in almost everything depends on 2 characteristics:

Read the same

For safety reasons, manufacturers do not advise putting iron knives on electronic trimmers. Virtually all electric and battery powered brushcutters are equipped with plastic blades. How to correctly put the knives on the trimmer (brushcutter). Depending on the manufacturer, they can be of a solid disc-shaped design, with several blades, or in the form of a special mowing head providing for the installation of removable plastic blades.

Assembling the Huter Trimmer Guard

Making a protective casing for trimmer.

Trimmer guard

Motokosa. How to replace a broken flap. The flap was beaten for several days. Maybe I'm out of luck. B high

Straight bar for petrol trimmer and curved for electric

Put a metal knife on electric trimmer its design features do not allow.

The curved bar of the machine reduces the distance from its working part to the mower's feet. In the event of a collision of the blades with a stone or other solid object, the scythe is thrown to the feet.
The high torque we mentioned above, in the event of a metal blade hitting a hard object, transfers a large load to the trimmer flex shaft and its motor. What causes them to fail prematurely.
The handle of the electric scythe most often does not have a limiting bar acting as a stop. But do not rely only on them, since not the cover with the cutting trimmer is designed for. That does not exclude injury to the legs.

It is these features that make it possible to use exclusively plastic knives on trimmers with electric motors. When hitting an obstacle, the blades are destroyed, thereby protecting the mower's legs from possible injury.

Plastic knives do a good job on overgrown and dry grass. They are able to mow nettles and burdock stalks.

The use of metal knives only on gasoline trimmers is also due to design features.

The straight bar design increases leg clearance for complete safety.
Comfortable U-shaped and J-shaped handles for a firm grip. The D-shaped handles of the brushcutter are equipped with a limiter that rests on the leg of the mower, which does not allow the head to come close to the feet when the cutting disc meets a solid obstacle.
The clutch of the gasoline engine allows for smooth acceleration to the optimum level. And when the blade hits a hard surface, it is able to absorb part of the impact.

Read the same

Thus, petrol trimmers with a metal blade installed are best used in large areas. They will successfully cope not only with high hardened grass, weeds, burdocks and nettles, but also shrubs, as well as young trees.

The shape of the blades of the disc supplied on trimmer nor does it affect the quality of the work performed. Speed does not depend on them either. Triangular, trapezoidal, rectangular shapes are all the marketing ploy of manufacturers.

If you are planning to prepare hay, it is best to put knives with big amount blades. Note the discs with eight teeth, or discs with four large blades and four additional blades. Two and three bladed knives will crush the grass hard.

How to put a knife on the trimmer correctly

Put a knife on a trimmer is not that difficult. The manufacturer completes its tools with a special pin that allows you to block the gearbox and a wrench with which the spool and fishing line are unscrewed. The most important thing is to observe safety precautions and the sequence of assembly and disassembly when changing cutting elements.

The algorithm for setting the knife to the trimmer is as follows:

We remove the protective shroud;
We block the drive. To do this, it is necessary to align two holes - in the shaft hub and in the gearbox cup. After aligning them, insert a pin into the holes;
We unscrew the spool with line from the hub clockwise or fastening nut holding the boot (if the trimmer has not been used yet);
Next, we install the cutting knife, so that the slots on the hub washer coincide with the recesses in the hole of the cutting disc;
Install the boot;
We tighten the fastening nut (counterclockwise) while holding the locking pin;
We tighten it using a tubular wrench;
We return the protective cover to its place.

How to make a trimmer with your own hands

The question of how to make a trimmer with your own hands is always relevant among the owners of private houses with a small plot of land. A neat and well-groomed lawn near the house is not only beautiful, but also safe in terms of the absence of ticks on it.

How to get rid of ticks on summer cottage it was told earlier, today the question will be considered - how to make a trimmer with your own hands from the most available tools for this.

Today on sale you can find various options for trimmers that work both from electricity and from gasoline. However, it is not always possible to buy a trimmer, and in most cases it is not so necessary.

The advantages of a homemade trimmer from a drill or grinder are that when you need to mow the lawn near the house, the trimmer is easily assembled. If not needed, the drill or grinder is removed from the trimmer and used for its intended purpose.

How to make a trimmer from a drill and grinder

In order to make a trimmer from a drill, you will not need a lot of materials and tools. You will also not need to disassemble the drill in order to make a do-it-yourself manual trimmer out of it.

In addition, a cordless screwdriver can serve as a replacement for the drill, which can be connected to a car battery to increase the trimmer's operating time.

Making a trimmer from a drill with your own hands

The main requirements for a homemade trimmer are primarily related to its safety. The knife of a homemade trimmer is very sharp, so the presence of a protective cover on the trimmer is a prerequisite.

The same applies to the trimmer handle, which will hold the drill. The handle should be made of durable materials, you can of course also of wood, but it is better to use an aluminum pipe for this purpose.

In addition, working with the trimmer after assembling it should be not only as safe as possible, but also convenient. Therefore, be sure to adjust the trimmer holder to your height, maybe install an additional handle on it on the side, etc.

First, a trimmer handle is prepared, on which the drill should be fixed. Long bolts and metal clamps will be needed to secure the drill. It is imperative that the power cord of the drill is tied to the trimmer handle. The wire must not be loose and constitute a danger if it gets under the trimmer cutting element.

How to make a trimmer knife: materials

The homemade trimmer knife is attached to the drill with a nut and bolt that is clamped in a chuck. Before doing this, be sure not to forget and install a protective cover on the trimmer in order to ensure your own safety when mowing grass.

The trimmer blade can be made of tool steel or other very durable material. You should know that the smaller the trimmer knife is, the better it will cope with cutting grass. The length of the trimmer blade depends primarily on the guard and the width of the cut. Most often, the length of the trimmer knife does not exceed 30 centimeters.

Do-it-yourself grinder trimmer

The question of how to make a trimmer from a grinder with your own hands is solved in approximately the same way as the above-described manufacture of a trimmer from a drill. There is only a slight difference in attaching the grinder to the holder. The trimmer handle can be selected metal pipe, to which at the end you need to weld a plate with a hole to fix the grinder with a bolt.

Small changes have also been made to the homemade trimmer knife. In the case of using a grinder, here the knife is not in the form of a long rectangle. The knife of a homemade trimmer from a grinder is made from a disc on concrete, with pre-cut sharp edges, which are just intended for mowing grass.

The question of how to make a trimmer from a drill or grinder is completely resolved and in an independent way. The main thing is not to forget about safety precautions and carefully study this issue.

Only after that, you can safely take on the manufacture of a trimmer with your own hands.

samastroyka.ru

How to make an electric trimmer with your own hands from a vacuum cleaner or other power tool

I faced the question of neat and quick mowing of grass near the fence of the summer cottage for a long time, when I had to learn how to use an ordinary scythe - Lithuanian.

Immediately I thought that it would not hurt to buy a simple lawn mower, which at that time was not easy. Therefore, I decided to experiment with a homemade design.

As a result, I gained practical experience in mowing grass, thanks to which I managed to buy a trimmer that suits my purposes well.

Based on the knowledge gained, I give advice to the home craftsman on how to make an electric trimmer with his own hands from used equipment based on an electric motor from a vacuum cleaner, drill or grinder with pictures, diagrams and photographs that allow you to repeat a similar design.

Please note that my lawn mower was going to hastily of the most, available materials... Its fastening was made for reliable operation without observing any design conditions, but with the provision of basic safety requirements. So do not judge strictly for the unpresentable appearance of the structure.

Safety regulations

I'll start with this section in order to remind you: any homemade lawn mower design can be harmful to health. This requirement is especially relevant for:

electrical equipment;
parts of mechanisms rotating at high speed.

Let's take a quick look at these two factors.

Trimmer electrical hazard

Electricity doesn't care about your health. It creates a current path where it is provided Better conditions and less electrical resistance. You can even get an electric shock from random things: clothes, surrounding objects, a standing car. There is nothing strange about this. You need to take care of yourself, use protective equipment.

When creating an electric trimmer with your own hands, immediately pay attention to the strength and quality of insulation of all live parts both inside the engine and on the external circuit. Its installation must be carried out by a qualified person.

During work, a homemade trimmer is necessary:

All three listed devices should be checked. They must meet safety requirements for technical specifications, settings, to be properly adjusted.

Dangers of mechanical circuit

Brush motors develop very high rotational speeds. For vacuum cleaners, they can range from 11,000 to 30,000 rpm. This is quite enough for a small pebble, a piece of wire or chips to fly out from under the cutting head, like a bullet from a rifle.

The difference will be that the direction of the bullet is chosen by the sniper, and the pebble from the lawn mower is the case. It is impossible to predict where he will fly. Therefore, when working, it is necessary:

ensure a stable body position, which is general requirement safety when working with all tools;
protect yourself with tight clothing made from natural cotton fabrics or jeans;
wear sturdy shoes on your feet rather than open sandals;
use goggles or face protection.

Lawn mower from an electric motor from a vacuum cleaner

My construction consists of:

collector motor;
its attachment point on a wooden bar;
homemade cutting knife;
support wheel;
switch buttons;
protective covers.

Electric motor

The design of the lawn mower is based on a collector motor from an old Soviet-era 300-watt vacuum cleaner of the Buran brand. It was necessary to abandon its use for its intended purpose after various gaskets began to wear out as a result of prolonged operation, and air movement was disrupted. I was tired of eliminating the appearing fistulas that affect the pressure and suction, so I bought a replacement for him.

Appearance the assembled engine side trimmer is shown in the photograph. Since it is no longer in use, it has become covered with rust, and the remnants of the cut grass have dried up long ago and remained stuck to all parts. It is much more convenient for me to work with a factory design.

The engine did not have to be altered at all. Just using an electric drill, a vice and a hacksaw for metal, I made several fasteners and protective covers. In the next photo, a cap is raised, cut from a plastic bottle, which covers the brush assembly.

In this picture, the working knife is poorly visible, but it can be seen above.

For greater clarity, he lifted the protective cover with his finger and showed a close-up of the motor from the side of the brushes. Here, all the factory parts have remained in working order.

On the opposite side, a factory-mounted condenser is running.

Barbell

All parts of the homemade trimmer are fastened on a dried wooden stick without any processing. I drilled the mounting holes in it, and screwed some details, for example, the handle bracket with a piece of wire.

All these compounds are visible in different images.

Homemade grass knife

It is noteworthy that when I removed the fan impeller, I saw: the vacant space on the rotor shaft is ideal for fastening homemade knife... Even the nut and gaskets did not have to be picked up.

Unsuccessful experience

At first I tried to attach wires of different diameters to the shaft. She normally started mowing the grass, but she broke off very quickly. Its structure does not withstand the mechanical tensile and bending stresses generated by high engine speeds and oncoming grass. Therefore, trimmer manufacturers produce different varieties fishing line.

A method of making a lawn mower

I made a knife for a homemade trimmer using the following technology:

took a metal plate of mild steel;
cut it out in a rectangular shape;
drilled a hole in the center along the shaft diameter;
sharpened edges to reduce stress when mowing.

To show how it was fastened through the factory bushing, I unscrewed the nut a little, and simply bent the knife itself by hand.

Support wheel

The main disadvantage of this lawnmower design, like all bottom trimmers electric motor, consists in the need to apply great physical effort to hold the knife in the desired plane when mowing. At the same time, the muscles of the worker tense, and he himself quickly gets tired. We need an emphasis on the ground.

Therefore, I attached small wheels from an old children's trolley to the motor housing and the rod by means of adapters. They are lightweight, but make the job much easier.

Switch button

It must be placed on the handle directly under the palm of your hand.

This way you can quickly turn off the trimmer.

Choice of design

I used a special fastening of a button with a self-return from one of the expired measuring instruments. It is simply screwed to a wooden rod with a soft copper wire insulated and, for better clarity, the photo is shifted from its axis to one side.

The switching capacity of the contacts with a reserve can withstand the power developed by the motor of 300 watts.

I would like to draw your attention to the self-return function. I do not recommend using a conventional switch. If during the work you accidentally fall, lose your balance or something unexpected happens, and the working trimmer slips out of your hands, then you will not be able to stop it instantly. A sharp knife will cut anything that gets in its way.

To prevent accidents in such situations, I even excluded the function of constant operation on the factory trimmer by removing the corresponding switch. I believe that safety and health are more expensive than such facilities with risks.

Mounting method

Accidental access to the electrical contacts of the wires is limited by the insulation of a special insulating tape.

In the next photo, I bared them on purpose. This will give you a better view of the attachment and connection.

By the way, I did the soldering with the same soldering iron. a large number of comments. Although there are many other designs outlined in a separate article on choosing soldering irons for the DIYer.

The wires to the button of the home-made lawn mower are simply wrapped around the rod, and on the back side are twisted and soldered into the break of one supply core of the cable. The connections are insulated with electrical tape, covered with protective shields.

According to safety rules, any switch or control button must switch a phase, not zero. But in the design under consideration, it does not make much sense to determine its position every time, and a homemade trimmer was created for the sake of experiment, and not long-term work. He proved himself quite satisfactorily when mowing a lawn.

Protective covers

You have already seen their image in all the above photos. On top of the motor, to protect the manifold assembly during operation, I simply inserted a cut-off neck from a plastic bottle.

It was possible to make the lower cover from the body of the same vacuum cleaner, cutting out part of the sector from it. Attached it with screws and nuts.

Trimmer from a drill or grinder

The principle of creating a homemade construction based on this tool is exactly the same as in my case.

The motor is attached to the lower end of the rod, and the working knife is made in the form of a nozzle.

Knife attachment principle

For a drill, you can screw two nuts onto an ordinary hairpin, pulling them together with keys, and use the plane of the created stop to install the knife.

A fastening nut will complete this design. If you put in wide washers, then the fixation will be stronger. The lock nuts can be replaced with one, but it will need to be welded. The back end of the hairpin is inserted into the drill chuck and clamped like a drill.

The hole of the knife must be drilled in the center, and the assembled nozzle must be well balanced. Otherwise, lateral runout will occur, for which the drill bearings are not designed.

Set the correct direction of rotation of the rotor using the drill switch. When turning on the trimmer, the nut should work on the knife clamp, and not twist off. Otherwise, the sharp-edged knife may fly out of the holder.

Line trimmer attachment

You can make a reel for attaching a fishing line with your own hands, but I don't see much sense in this matter. It's easier to buy it in the store or use it from a broken trimmer.

The fact is that in the process of work, when the line is shortened, its cutting length can be restored by simply hitting the rotating head on the ground. This function works by maintaining the exact dimensions of the tip after complex mechanical adjustments. And a one-time attachment of the line requires frequent shutdowns of the trimmer to replace it.

Take care of your safety first. For this:

once again remember the rules for handling electricity;
do not work without protective covers with open rotating knives;
do not trust strangers without proper preparation your dangerous homemade products;
while mowing, do not distract, but control the working area. Keep children, animals, and casual visitors away from it.

A home-made lawn mower helps to feel all the charms and disadvantages of electric mowing of grass, the peculiarities of the operation of such devices, the need to balance the center of mass. After gaining a little experience with it, it is easier to choose a factory model, professionally prepared for long-term use.

housediz.ru

How to make a trimmer with your own hands from a grinder, vacuum cleaner, drill, chainsaw

All owners of backyard plots are faced with the problem of mowing the grass, which grows literally before our eyes, and during the season it is required to refine their plot several times. The usual manual scythe has long been replaced by petrol and electric trimmers. But the price for them does not decrease and is quite tangible for many owners of summer 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 a gasoline and power tool that was not intended for these purposes.

From the grinder

Most often, a homemade electric trimmer is made on the basis of a conventional grinder, which is available from every home craftsman. This tool is almost ideal for converting to a trimmer. It has more power than store devices and a higher number of revolutions per minute. In addition, the standard nut used in the grinder to secure the disks already has holes through which it is easy to insert the fishing line (cord).

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

For the safety of using a homemade device, you can improve it by making a protective casing (how to do this will be discussed later).

For advanced craftsmen with a welding machine, you can advise a more perfect design for fixing the grinder and the protective casing. It is made of an aluminum tube (serves as a holder) and a metal square profile. Looking at the picture below, you can understand the principle of making the holder.

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

The following photo shows how this structure looks from below.

By the way, the holder (rod) itself can be screwed 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 a side handle made of bent pipe.

From the 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 fixed on the rod, and either knives or a plastic or metal disc into which to insert the fishing line must be fixed to the motor shaft. The cutting tool is covered from above with a protective cover.

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

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

In order to relieve the burden on the hands of the mower operator, the machine can be installed 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 bore or a plastic trolley wheel 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 a drill with this attachment does not have a protective cover, such a tool is quite dangerous for the user. To protect yourself, you can place the drill, like the grinder (mentioned above), on a shovel handle or on aluminum pipe.

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

The drill is attached to the rod with clamps.

From a chainsaw

For the chainsaw, many different attachments 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 attachment. You can see how it looks in this video. If you want to make a trimmer from a chainsaw, then the maximum you can do is a lawn mower on wheels, since the engine of the unit is quite heavy, and it will not work to apply the above options for making trimmers (with a lower drive) to it.

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

When installing the handle of the trolley, make sure that it does not overlap the trigger (starter).

The gasoline engine is installed (screwed through the holes for fixing the tire) to the frame in such a way that the gearbox is turned 90 degrees and the shaft is at the bottom.

Now all that remains is to attach the cutting tool to the machine shaft. This is done as follows.

A small piece of pipe, 80 mm long and 50 mm in diameter, must be welded to the "star" of the apparatus. It is better to cut the pipe on a lathe so that the ends are perfectly flat.
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 get a telescopic shaft, which is connected with 2 bolts (m6) opposite each other. The bolts must have lock nuts. Below is a diagram of how 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 dry branch. This will protect the shaft and gearbox from damage that can occur when the tool is jammed.

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

The diameter of the disc (made from sheet steel 4 mm) must 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, ordinary fishing line will not cope with this task. Therefore, you cannot do without a special metal knife. Trimmer knives can be purchased at specialized store, but you can do it yourself, for example, from an old circular saw blade (without soldering). The knife is made as follows.

Homemade protective casing

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 stones and knife shards if they break.

The trimmer cover can be made from sheet aluminum or thin sheet metal.

In this way, you can make and install a protective casing on a trimmer bought in a store, if the guard breaks for some reason. Guards 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 strap

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 relieves fatigue from the hands and back of the mower operator and makes the process much easier when compared to the same job, but without the belt.

There are shoulder and knapsack belts. 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. The second carabiner usually has a plastic plate that protects the operator's side from pressure from the trim bar.

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

The trimmer strap can be easily ordered online or bought at a specialized store where these machines and accessories are sold.

The price of knapsack belts starts at 250 rubles and above.

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

tehnika.expert

Homemade products from a screwdriver: an electric generator, a grinder, a trimmer, a lawn mower, an engraver, a brush cutter

The screwdriver is widely used in various fields of activity to work with fasteners different kind: self-tapping screws, screws, bolts with nuts, furniture confirmations, screws and others. Also, using this power tool, they will roll holes in different materials, for example, in various metals, in lumber, in concrete. In this case, the functionality of the operated model is determined by the value of its power and torque, the presence of a shock function.

A variety of equipment and tools for household use can be made from a screwdriver at home. In addition to the power tool itself, alteration in many cases will require additional parts and materials. But homemade devices will still cost less than factory counterparts, allowing you to automate and make manual work more efficient.

Homemade equipment ideas from a screwdriver

The entire range of screwdrivers is divided into mains and cordless models. Both types of products are powered by electrical energy that drives an electric motor in rotation. Only the electric motor itself for network devices is designed for an alternating voltage of 220 V, and for battery technology for a constant of different values, for example, 12 V, 14.4 V. These design features, together with technical characteristics, largely determine which homemade products from a screwdriver can be assembled ...

Electricity is one of the main types of energy used by humanity. Household appliances, industrial equipment, machine tools, and power tools operate at the expense of electricity. At the same time, work is performed by electric motors of various designs and powers, which are powered by alternating or direct current types. For this reason, the following technical devices can be assembled on the basis of a screwdriver or from its individual parts:

garden shredder of grass and branches;
trimmer (electric trimmer);
marching hand generator;
engraver (mini-drill, dremel, drill);
wind generator;
lawn mower;
grinder;
mini-machines: drilling, grinding, thicknessing, turning, sawing, sharpening;
tool for knitting reinforcement;
gate opening drive;
means of transportation for children: ATV, bicycle, scooter;
small ice screw, yamobur, construction or kitchen mixer.

The powerful impact model can also be converted to a concrete rammer using a special nozzle.

The implementation of each option takes different time and requires additional (insignificant) costs, or does without them at all.

Assembling a hand-held camping power generator and a homemade wind generator

It will not be difficult to make a home-made generator from battery models of the tool, which will produce electricity when the handle is rotated by hand. Such a device will come in handy in field conditions. To make a dynamo machine, you do not need to radically modify the product. Everything necessary to create a marching generator is already in the design of the device; only minor modifications will be needed.

With the help of the created equipment, it will be possible to charge 6 or 12 V batteries.

For alteration, a power tool with an operating voltage of 18V and above is suitable. The modification is carried out in the following way:

disassemble the electric screwdriver;

carefully solder the electronic board;
instead of batteries, they put a diode bridge suitable in terms of parameters (dimensions, technical characteristics) inside the battery case;

a comfortable handle with a handle is made;
the end without the handle is fixed in the chuck.

The final design after the performed manipulations will look something like the photo below.

The diode bridge is necessary so that the generator handle can be turned in any direction. Instead of the handle, you can insert a nozzle with blades. Then you get a simple wind generator.

An electric generator powered by wind power is also made in a different way, in the form of a weather vane. In this case, they do the following with a battery device:

disassemble the screwdriver;
take out the electric motor by disconnecting its contacts;
remove the cartridge with a gearbox (rotor part);

an electric motor shaft is inserted into the chuck, clamping it;
a round metal plate about 1 mm thick is bolted to the gear wheel of the gearbox, which will serve as the basis for fixing the blades made, for example, of plastic pipes;
a clamp with a collar is put on the shaft between the chuck and the gear;

cut a rectangular base from plywood or thin metal;
using a clamp with a clamp, an engine with a chuck is attached to it, drilling holes for fastening in the right places;

make a casing to protect the wind generator (from precipitation, dust and other unforeseen influences), for example, from under a coffee can;
insert the base with the motor and the cartridge inside, securing the elements with glue, and the cover with a sealant;

make blades by attaching them to the round plate of the unit;
a weather vane is made;
an assembled generator is mounted on one of its ends;

connect the wiring to the motor outputs;
check the output voltage with a multimeter by rotating the blades by hand.

There are many options for wind generators. Even the entire screwdriver is attached to the support, providing it with a nozzle with blades.

Alteration of a screwdriver into a grinder

If angular Sander is broken or it is absent altogether, then it can be temporarily replaced with a cordless or mains electric screwdriver. In this case, there are various options for redoing. The easiest way is to use ready-made or homemade nozzles or adapters. An example of an adapter is shown in the photo below. One end of it is fixed in the chuck, and the disc clings to the other.

Another option that allows you to convert a drill-driver into a grinder is to use a special type of attachment equipped with a gearbox. When implementing the method, the power tool is disassembled, its gearbox is dismantled, and a nozzle is installed instead. After transformations, you will get a tool similar in appearance to an angle grinder.

It should be borne in mind that such a special attachment is expensive and the modification work takes a lot of time.

Homemade nozzles made from studs of a suitable diameter, nuts and washers. They are even used with cordless electric screwdrivers.

The efficiency of homemade products is much lower than that of factory grinders. This is due to the large difference in the rotation speeds of the attachments: about 3000 rpm for a screwdriver versus about 11000 rpm for an angle grinder. An insignificant amount of power together with a low speed significantly limit the functionality of the device made.

The devices made should be used only in emergency situations. Due to the possibility of reversing on the tool being converted, it is necessary to observe the direction of rotation of the disc so as not to injure.

Converting a screwdriver into a trimmer or lawn mower

To make an electric braid with your own hands, you will need the following parts and materials:

a piece of plastic pipe about 2 m long;
soldering iron with soldering kit;
fasteners: self-tapping screws, bolts with nuts;
45 degree plastic corner;
pipe plug;
12 V motor from an electric screwdriver and accumulator battery from him;
the wire;
adapter from 40 to 50 mm for plastic pipes;
power button;
plastic bucket;
contact clips (crocodiles) - 2 pcs;
blades from office knives.

The work uses a pipe and a corner to it with a diameter of 40 mm.

The alteration process is carried out as follows:

having disassembled the electric screwdriver, they take out the motor;
attach it to the plug, having previously marked and drilled the landing holes in it;

attach the electric motor with 2 screws;

solder the output to the motor;

install an electric motor by pushing its wiring into the pipe;

mark the location of the future switch with a marker on the tube;

connect to the wiring switch, mount it;

contact clamps are connected to the ends of the outgoing wires for quick connection to the battery;

a battery holder is made from the adapter;

connect the drive, connect the adapter to the tube;

using a conventional clamp for terminals, the nozzle is connected to the motor shaft;

a protective casing is made from a plastic bucket;

glue the part to the pipe;

check the performance of the structure.

The created device will allow mowing only the grass cover with soft stems. Various options There are a lot of lawn mowers based on network models of drills and screwdrivers. The photos below show two homemade products.

First, a base is created from metal, plywood or other materials, to which the wheels are then attached, as well as the control handle. The electric screwdriver is fixed with clamps or to the rack. A cutting attachment is inserted into the chuck. To protect the feet from flying grass, a shroud is attached to the back of the base. Power is made through a button or directly from the network.

To assemble a sufficiently functional lawn mower, you need to take a drill driver from 0.5 kW of power.

Assembling the engraver

A cordless or networked model of an electric screwdriver can be turned into an engraver, which is also called a dremel, drill, mini-drill, or straight grinder. To do this, you just need to buy a nozzle in the store and grind any bit for it.

A homemade cartridge will allow you to use a variety of equipment designed for dremels.

The following video demonstrates the process of creating a flexible shaft engraver.

Making a garden shredder

Garden shredder for grass and thin twigs (less than 1 cm thick) can be made on the basis of a cordless drill-screwdriver.

Create an aggregate like this:

choose a suitable container, for example, zinc boil;
a hole is drilled in the center of the bottom for the shaft, on which a knife or several blades will be fixed;
make wooden or metal carcass to install the container or put it on the edge of the table;
a drill-screwdriver is attached to the frame or bottom of the boil, which is equipped with knives;
mount the on / off button;
make a slot on the side in the container - cut out a rectangle in front of the bottom 10 by 20 cm;
a sleeve is made of tin for ejection of crushed plants;
attach it to the container;
check the performance of the unit.

Knives are most easily made from hacksaw blades. They need to be installed with sharpening down. In this case, you can make several options for blades for different herbs. If you make an attachment in the form of knives for a drill-screwdriver, then the grass can simply be chopped in a bucket or other suitable container.

Screwdriver machines

Craftsmen have made many machines of different purpose from a screwdriver. They do quite well with everyday tasks.

If you need to work professionally, then you cannot do without more serious equipment.

One of the options for how to convert a drill driver into drilling machine, demonstrated in the video below.

The way to create the simplest lathe shown in the video below.

Also, on the basis of a drill-screwdriver, it is possible to assemble the simplest milling and grinding machines, which is demonstrated in the following videos.

Other non-standard ways of using the tool

Non-standard use of a screwdriver is not limited to the options considered. The video below shows how to use this power tool as a drive for an ATV and for opening doors (gates), for ice drilling, as a mixer. The video also contains other unconventional options.

Using a case with a battery can make a good flashlight. The whole process of assembling an LED lamp is shown in the video below.

How to adapt a screwdriver electric motor to make an electric bike is shown in the videos below.

Another version of the bike with a motor contains a roller further.

Using a hook inserted into the screwdriver chuck, you can knit reinforcement during the construction of various objects. How this is done is shown in the following video.

By connecting the tool to the auger of a manual meat grinder, you can automate the process of twisting vegetables and meat.

It should be borne in mind that homemade products of this kind are often very limited in load. But if there is no practical benefit from them, then entertainment is guaranteed.

The unconventional use of the screwdriver is not limited to this. Craftsmen constantly put forward new ideas, while their practical implementation is taking place. Other experts adapt homemade gadgets for their own needs, while receiving a variety of modifications of homemade equipment. You can also come up with something on your own, showing technical knowledge and imagination, giving free rein to imagination and creativity. The main thing to remember: when starting to manufacture various devices, it is imperative to take into account that the created mechanisms are safe.

Annotation on maintenance petrol trimmers and brushcutters

Fuel mixture

Butter- high-quality two-stroke oil for high-powered vehicles (10-15 thousand rpm, about 200 rpm). Do not use motorcycle oils (low engine speed) or for aqua technology (another cooling system) - their introduction does not provide the necessary lubrication of the piston group and parts of the entire engine! Petrol- any kind of spotless high-octane gasoline (with a number of 92 and above, with a density in the range of 750-770 kg / m3). Fuel ratio- 1:50 (2%) or 20 ml / cm3 of oil per 1 liter of gasoline. For example, in transparent plastic bottle(1 l) pour in half a measure of gasoline, then add oil with a syringe (20 ml / cm3) and mix, add gasoline and stir painstakingly. If the quality of gasoline is not clear or the working conditions are difficult, then the amount of oil should be increased to 22-25 ml / cm3. Shake the mixture before each refueling. Having made the protective cover (how to install on the protective cover and on the trimmer. Changing the line on the trimmer how to install the mowing head and knife on the trimmer. Store the purchased fuel for less than 2 weeks. ), then it is not recommended to use it.

Running in.

Run at least one fuel tank with the engine (no load!) With frequent changes in the speed (idle - highest speed). The next 5 hours of operation at a gentle (50%) load. After running in, it is indispensable to check the engine speed (by an electric tachometer in the service center) and, if necessary, adjust them by a specialist.

Maintenance.

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Engine. The air filter must always be clean (no dirt or sawdust); the foam filter must be moistened with oil. The fuel filter must be inspected once a week (change as necessary). Check the nuts and screws for tightness - before operation. Cleaning the muffler (or its mesh) and spark plugs from carbon deposits - if necessary. Set the coil with the cover 14 to remove the coil 17 as when closing the protective casing. Angle reducer. Once a day, clean it of dirt (a similar “fur coat” does not allow the gearbox to cool normally) and add grease for the gear pair.

Assembly protective cover trimmer Huter

Manufacturing protective cover for trimmer.

Protective cover for trimmer

Manufacturing instruction protective cover for the petrol trimmer.

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Fishing line and trimmer heads. Use only special mowing line - do not use wire or metal ropes! Install only a line of the diameter recommended by the manufacturer. Wrap tightly around the bobbin, but do not cross the threads. Clean the mowing head from dirt and lubricate if necessary. Remove the protective cover with the line to be properly installed on the shaft. Initially, in the trimmer, they are set how to put on the protective cover correctly. A deformed or worn head can damage the gearbox and / or the brushcutter shaft.

Cutting discs. Cutting parts must be well and correctly sharpened using the necessary templates and files and respecting the angles of the cutting parts, depending on the brand of the blade. Turn double-sided discs regularly by 180 ° and wear evenly. A blunt disc or a disc with poor or incorrect sharpening cuts poorly, and thereby overloads the engine, which leads to a rapid reduction in its service life. Protective covers. The motor is on an electric trimmer on them, since there is no protective cover with. It is forbidden to work without protective cover- this is dangerous for the operator's life and can overload the brushcutter engine. For each type of cutting attachment, only use its own protective cover.

A haircut. Hold the trimmer head directly off the ground at an angle. The end of the string does the work. Let the string run at its own speed. How to wind the fishing line on a thicker cord to install not they did not touch the protective casing. Do not press the string against the mowed area! This overloads the motor and mowing head - they can break down or melt!

Pruning with a knife. Mow with a pendulum motion from side to side, movement from right to left will be working, and from left to right - will be reversible. The blade should cut off the grass with its left edge (between 8 and 12 on the clock face). Compliance with the above recommendations will extend the service life of gasoline vehicles many times over.

How make a trimmer do it yourself

How to make a trimmer with your own hands

How to get rid of ticks at their summer cottage was discussed earlier, now the question will be considered - how to make a trimmer do it yourself from the most available means for this.

Now on sale you can meet different variants trimmers powered by both electricity and gasoline. But it is not always possible to purchase a trimmer, well, in most cases, it is not so necessary.

The advantages are homemade trimmer from a drill or a grinder, it will be that when it is necessary to mow the lawn near the house, the trimmer is easily assembled. Trimmer line, trimmer head, trimmer knife - how not to get confused in their characteristics and make right choice... If not needed, the drill or grinder is removed from the trimmer and used for their own intended purpose.

How to make a trimmer from a drill and grinder

In order to make a trimmer from a drill, a lot of materials and tools will not come in handy. It will also not be necessary to disassemble the drill in order to do from it a manual trimmer with your own hands.

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In addition, a cordless screwdriver can serve as a replacement for a drill, which can be connected to a car battery to increase the duration of the trimmer.

Making a trimmer from a drill do it yourself

The main requirements for a homemade trimmer are first placed on its safety. The knife of a homemade trimmer is very sharp, so the presence of a protective cover on the trimmer is an indispensable condition.

The same applies to the trimmer handle, which will hold the drill. How to make a homemade trimmer protection with your own hands In the summer, to a summer cottage. The handle should be made of strong materials, you can naturally also from wood, but it is better to use a duralumin pipe for these purposes.

Protective shroud for trimmer

Making a protective trimmer cover.

Motokosa. How to replace a broken flap.

Motokosa. How to replace a broken flap. How to make a homemade trimmer protection with your own hands. How to make a fuel mixture for a trimmer or petrol cutter. The flap was beaten for several days. Maybe I'm out of luck. In high.

How to make a trimmer knife: materials

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Homemade knife trimmer fastened to the drill with a nut and a bolt that is clamped in the chuck. Before that, be sure to remember and install a protective trimmer shroud to ensure your own safety when mowing grass.

The trimmer blade can be made of tool steel or other very durable material. Coil for trimmer How to make a coil for trimmer Therefore, it is extremely important to match. You should know that the smaller the trimmer knife is, the better it will cope with cutting grass. The length of the trimmer blade depends primarily on the guard and the width of the cut. Most often, the length of the trimmer knife does not exceed 30 centimeters.

Do-it-yourself grinder trimmer

The question of how to make a trimmer from a grinder with your own hands is solved in about the same way as the above manufacturing trimmer from a drill. How to make a cover from a trimmer for a hole for a trimmer bar, etc. If you are interested in the following questions, for example: How to make a fuel mixture for a trimmer (petrol cutters). There is only a slight difference in attaching the grinder to the holder. A metal pipe can be chosen as a handle for a trimmer, to which a plate with a hole must be welded at the end to fix the grinder with a bolt.

Small changes were made to the knife homemade trimmer... In the case of using a grinder, here the knife is not in the form of a long rectangle. The knife of a homemade trimmer from a grinder is made from a disc on concrete, with pre-cut sharp edges, which are just intended for mowing grass.

The question of how do a trimmer from a drill or grinder is completely solvable and in an independent way. The main thing is not to forget about safety precautions and carefully study this issue.

Only after that, you can safely take on the manufacture of a trimmer do it yourself.

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Correct technical service is the key to long-term and reliable operation of the tool. Primitive maintenance operations include timely lubrication of the gearbox and cleaning of the trimmer filter. The user should know how to lubricate the trimmer gear. Cleaning is done in stages: After removing the cover, the element is removed. Then it is washed with gasoline and dried ...

What kind useful homemade products can be made from a chainsaw? The chainsaw is very popular among DIYers, as it is a universal drive for unique homemade designs. Low weight and impressive power, coupled with small dimensions, allows this "lumberjack's dream" to be aggregated with an ice screw and a ...

A neatly trimmed lawn is not only beautiful in itself, but also in a certain way testifies to the status of the owner of the house. Nowadays, it is not difficult to find a lawn mower that is suitable in terms of performance and design. But there is another option. If a medium-power electric motor is lying around on the farm, then, after spending a few evenings, it can easily be turned into a simple and convenient home-made lawn mower, while saving not such a small amount of money that would have to be paid for a branded lawn mower, and even enjoying creativity.

General arrangement of a lawn mower

In its simplest form, a lawn mower consists of the following assemblies and parts:

Engine.
A frame on which all mower units are fixed.
Knives.
Protective casing.
Wheels.
Control knobs.
Control system details: switch, RCD, power cable with plug.

The framework of the simplest design is a metal sheet 2-3 mm thick with a hole in the middle for the passage of the motor shaft. The sheet is reinforced with a frame made of metal corners. An engine is attached to the sheet from above, a protective casing from below, on the sides of the axle for wheels, handles for control.

If the motor is flanged, it can be attached directly to the sheet by drilling holes in the latter that match the holes in the flange. If the engine is of a conventional design, two perpendicular posts from the corner must be welded or screwed to the sheet so that they coincide with the engine feet.

Homemade lawn mower. Fastening the electric motor to the corners.

Holes are drilled in the corners for mounting the engine. If the holes are made in the form of grooves, this will allow the motor to be displaced relative to the frame when fastening, thus changing the distance from the knives to the ground. This design feature will be useful when selecting optimal height cutting grass. But it is easier to make holes for different positions of the motor in height.

The centerpiece of the mower is the cutting unit, which consists of a mandrel with two short (or one long) blades attached to it.

Engine

A good option is an asynchronous electric motor with a power of 500-600 W or higher, with a speed of about 3000 rpm. The big advantage of an asynchronous motor is its low noise. The higher the engine speed, the better and smoother the haircut. Actually, the quality of mowing is not determined by the speed of rotation of the knives, but by the linear speed of the cutting edge relative to the grass. At the same engine speed line speed cutters the higher, the larger the grip (the diameter of the circle along which the cutting edge rotates). Therefore, with a large grip (more than 40 cm), the engine speed can be lower. However, in this case, the motor power must be higher - in order to overcome the increasing resistance. Practice shows that this option is quite efficient: a grip - 50 cm, engine power - 1 kW, speed - 1500 rpm. But in principle, the grass will be mowed, although worse, and the 500 W motor with a frequency of 1500 rpm. Only with a low engine power, it is necessary to regularly sharpen the knives.

To connect a three-phase motor to a single-phase network, it is necessary to use a circuit with working and starting capacitors. Information on connecting three-phase motors to a single-phase network is abundant on the Internet. It is not difficult to find formulas for calculating the required capacitance of capacitors. In practice, take about 200 μF for a motor with a power of about 2 kW. For a power of 500-600 W, 60-80 μF is enough.

When making a casing for the engine, you need to provide holes for engine cooling.

You can make a do-it-yourself lawn mower using a conventional electric drill with a speed of up to 3000 rpm. It is not so difficult to come up with a drill attachment to the frame. However, you need to understand that in terms of reliability and duration of continuous work, the drill cannot be compared with asynchronous motor therefore, if a relatively large area is to be mowed, the latter should be preferred.

A drill is more suitable for making a homemade trimmer.

In the case of a drill, it is very easy to mount the knife. A knife with a hole in the center is clamped by a nut on a bolt, and the bolt is clamped in a drill chuck.

Mandrel

Most simple construction the mandrel is a disc or strip with a flange, in which there is a hole equal to the diameter of the motor shaft. The flange is put on the shaft and locked on it, knives are attached to the disc or strip. The disc diameter or strip length depends on the planned working width and the length of the knives. As a ready-made mandrel, you can use a pulley with a bore diameter that fits the shaft of the existing engine. This will solve two problems at once - the centering of the mandrel and its fastening. But the pulley must be reliable enough.

The arbor must be securely attached to the motor shaft. This is usually done with bolts threaded into the flange perpendicular to the shaft axis.

A stone holder for a sharpener can be used as a mandrel.

To prevent grass from wrapping around the shaft, it can be closed with a tin can.

If a suitable pulley or other suitable parts are not found, you will have to order the manufacture of a mandrel from a turner or make it yourself from a pipe suitable for the diameter and a strip or circle welded to it. There are three problems here: finding a suitable pipe in diameter, ensuring that the strip or circle to be welded is perpendicular to the pipe and centering the mandrel after its manufacture. With some effort, all of these problems can be solved.

Knives

Flat tool steel with a thickness of 2-3 mm and a width of 20 to 50 mm are used as knives. The thinner the knife, the better it cuts. However, a thick knife is stronger, which, given the obstacles in its path in the form of bumps, various foreign objects and even stones, very important.

There are two basic types of knives. The first is a knife in the form of a long strip, which is attached to the mandrel symmetrically about its axis. The length of the knife in this case is equal to the width of the grip - usually 30-50 cm. The sharpened ends of the strip serve as incisors. The knife and the mandrel can in this case be one integral piece in the form of a plate, to which a flange with a bore is welded or riveted.

The second option is two short knives 50-80 mm long, which are attached along the edges of the mandrel at an angle of 180 ° to each other. They can be straight or slightly sloped. You can attach the knives with two or one bolt. The first method is more reliable, but fastening with one bolt allows the knife to fold (without breaking or deforming) when it hits an obstacle - a stone or a bump. The attachment of folding knives should be inspected regularly as screws may fray over time.

The steel for the knives must be sufficiently hard, but not brittle, otherwise the knives may break, which will not only require replacing them, but also create the danger of injury from a flying piece. The experience of amateur craftsmen shows that a 2 mm thick hacksaw blade for wood is very well suited as a material for lawn mower knives. The technology for making a knife from them is simple. On the canvas, two blanks are marked in the form of strips (or one long knife is made from the canvas with sharpening at the ends and holes for fastening in the middle), which are then cut out with a grinder. Holes are drilled in the blanks for fastening. After that, it remains to sharpen the knives, attach them to the frame and center them.

If drilling holes is problematic, then you can put the canvas on a metal surface with a hole slightly larger than the hole in the canvas should be, and hit with a punch. The protrusion formed after the impact is removed with a file (if the metal is soft enough) or on a sharpener. If the hole doesn't respond the required diameter, the process is repeated.

In fact, there are many options for making workable knives, as well as materials for their manufacture. The main thing is to sharpen them well, center them (so that there is no vibration) and securely fix them. When attaching the knives to the mandrel, use washers and locknuts. Without this, the mounting bolts will loosen from vibration.

If possible, it is better to make the cutting edges slightly curved downward, like in branded lawn mowers. This will reduce winding of grass on the motor shaft. Or you can make a disc that covers the shaft. Also, if the engine power is close to that of a branded lawn mower, you can buy a branded lawn mower knife ().

Wheels

The diameter and position of the wheels must be selected in such a way that the knives are located at a distance of 5-6 cm from the ground. This cutting height is considered optimal - both in terms of the aesthetics of the lawn and the quality of the mow. If the grass is cut too high, it will bend, allowing the knives to pass over it and remain uncut. A lower cut is difficult due to the unevenness of the ground.

There is no unequivocal opinion about which number of wheels is optimal - 2, 3 or 4, among the masters who operate homemade lawn mowers. 3 or 4 wheels are good because they set the exact distance from the knives to the ground. Two wheels make the mower more manoeuvrable and allow you to cut grass in any hidden places. In addition, finding two identical wheels is easier than finding three or four. However, you can make wheels yourself, for example from plywood and bearings, so the last argument is not so convincing. Ultimately, the choice remains with the master himself.

If a two-wheel lawn mower is selected, there must be protection against touching the ground with the rotating blade.

If a three-wheeled lawnmower is selected, the two wheels must be on the side of the handle so that the front of the lawnmower can be lifted for a turn by pushing down on the handle.

How larger diameter wheels the better. A lawnmower with small wheels is more difficult to roll on the grass.

If the edges of the knives are bent upward (or the blades are riveted to them), they will work like a fan, lifting and rotating the cut grass with a stream of air. At the same time, if a cutout is made in the casing (in the quadrant where the knives run into) and a mesh bag or box is pulled over it, then the cut grass will be collected in it.

At the end of the article there is a video demonstrating the operation of the second lawn mower.

Without the bag, the grass will be stacked to the side specified by the cut. Without a hole in the casing, the grass will be crushed, this will be mulching. But for all this, a sufficiently powerful engine is needed, and in order to avoid stuffing cut grass into the engine, the space between the engine and the knives must be covered with a disc.

Working with the mower will be safer if one of the handles is equipped with a lever that, when released, cuts off the power supply to the motor.

Security measures

When starting to make a lawn mower with your own hands, you need to understand the danger posed by the operation of such devices. If we talk about the main threats, then there are two: electric shock and injury from rotating knives. Both are classified as very serious, therefore, security measures must be taken very carefully.

All electrical connections must be carefully insulated - both on the engine itself and on the control parts. The insulation on the supply cable must not be broken. To power the electric motor, it is necessary to have a double-insulated cable with at least 3 cores. The mower body is reliably grounded, for which one of the cable cores is used. Or connect the lawn mower to the network without fail using an RCD - a residual current device designed to de-energize electrical devices when a person touches their parts that are energized due to insulation failure.

Do not operate the mower without a protective cover. When working, you need to ensure that there are no people nearby. Broken knives fly out at high speed. And if the operator himself is protected by a casing, then with some designs of homemade lawn mowers, the front area of the mower remains open. It is desirable to mow in rubber boots... This will save you from the consequences of hitting various objects that are thrown away by the rotating knife.

Do not use the mower in wet weather and early in the morning when there is dew.

Below is an example of an incorrect homemade lawn mower.

The engine is completely open, while there is no homemade casing for it, there is not even a protective disk on the side of the knives, although there is a huge hole there. There is no casing to protect the lawnmower from a flying knife or a thrown stone. The handles are welded on and cannot be tilted and cannot be removed when storing or transporting the mower.

DIY lawn mowers video:

Homemade lawn mower from a basin

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