Homemade casing for the trimmer. Do-it-yourself screwdriver trimmer. Homemade protective cover

With the question of accurate and quick mowing of grass near the fence of the dacha, I encountered a long time ago when I had to learn how to use an ordinary scythe - Lithuanian.

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

Finally purchased practical experience mowing grass, thanks to which I was able to buy a trimmer that is well suited for my purposes.

Based on the knowledge gained, I give advice home master how to make an electric trimmer with your 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 assembled in haste from the most available materials. Its fastening was made for reliable operation without observing any design conditions, but with the provision of elementary safety requirements. So do not judge strictly for unpresentable appearance designs.

Safety regulations

I'll start with this section 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 does not care about your health. It creates a current path where it is provided Better conditions and lower electrical resistance. : clothing, surrounding objects, standing car. There is nothing strange in this. We need to take care of ourselves, use protective equipment.

When creating an electric trimmer with your own hands, immediately pay attention to the strength and quality of the insulation of all current-carrying parts both inside the engine and on the external circuit. It must be installed by a qualified person.

During operation, a homemade trimmer must:

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

Dangers of the Mechanical Circuit

Collector motors develop very high speeds rotation. For vacuum cleaners, they can range from 11,000 to 30,000 rpm. This is quite enough for a small pebble, piece of wire or wood 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 chosen by chance. It is impossible to predict where he will fly. Therefore, when working, you must:

ensure a stable position of the body, which is general requirement ;
protect yourself with tight clothing made from natural cotton fabrics or jeans;
wear sturdy shoes on your feet, not open sandals;
use goggles or a protective mask.

Lawn mower from an electric motor from a vacuum cleaner

My design is:

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

electric motor

The design of the lawn mower is based on commutator motor from an old Soviet-era 300-watt vacuum cleaner from the Buran brand. It had to be abandoned from its intended use after various gaskets began to wear out as a result of long-term operation, air movement was disturbed. I was tired of eliminating the fistulas that appear, affecting the pressure and suction, so I bought a replacement for him.

The appearance of the assembled trimmer from the engine side is shown in the photo. Since it is no longer in use, it is covered with rust, and the remnants of the cut grass have long dried up and remained stuck to all the details. It is much more convenient for me to work with a factory design.

The engine didn't have to be rebuilt at all. Simply, a vise and a hacksaw made several fasteners and protective covers. In the next photo, a cap cut out of plastic bottle covering the brush assembly.

The working knife is hard to see in this picture, but it can be seen above.

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

On the opposite side, a factory-mounted condenser works.

Barbell

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

All these connections are visible in different pictures.

Homemade grass knife

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

Bad experience

At first I tried to attach wire of different diameters to the shaft. She normally started to mow the grass, but very quickly broke off. Its structure does not withstand the mechanical tensile and bending loads developed high turnover engine and oncoming grass. Therefore, trimmer manufacturers produce different varieties fishing line.

How to make 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 diameter of the shaft;
sharpened the edges to reduce the load when mowing.

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

support wheel

The main disadvantage of this lawn mower design, as with all trimmers with a lower electric motor, is the need to apply great physical effort to keep the blade in the desired plane when mowing. At the same time, the muscles of the worker tense up, and he himself quickly gets tired. Needs ground support.

Therefore, I attached small wheels from an old children's cart to the engine body and rod using adapters. They are light but make the job much easier.

Switch button

It must be placed on the handle directly under the palm.

So you can quickly turn off the trimmer.

Design choice

used special mount buttons with self-return from one of the used measuring electrical devices. It is simply screwed to a soft wooden rod. copper wire in isolation and for better clarity, the photo is shifted from its axis to one side.

The switching capacity of the contacts with a margin withstands the power developed by the motor of 300 watts.

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

To prevent accidents in situations like this, I even have a factory trimmer. I think that safety and health are more expensive than such conveniences with risks.

Mounting method

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

In the next photo, I deliberately exposed them. This will give you a better view of the mounting and connection.

By the way, soldering did everything the same. Although there are many other constructs described in a separate article .

The wires to the button of a homemade lawn mower are simply wrapped around the bar, and with reverse side twisted and soldered into the gap of one power cable core. Connections are insulated with electrical tape, closed with protective cambric.

According to security rules, any, not zero. But in the design under consideration, it does not make much sense to determine its position each time, and the home-made trimmer was created for the sake of experiment, and not long work. He has proven himself quite satisfactorily when mowing the lawn.

Protective cases

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

The bottom cover was made from the body of the same vacuum cleaner, cutting out part of the sector from it. I attached it with screws and nuts.

Trimmer from a drill or grinder

Creation principle homemade design based on this tool is exactly the same as in my case.

The engine is mounted on the lower end of the rod, and the working knife is made in the form of a nozzle.

The principle of fastening the knife

For a drill, you can screw two nuts onto a regular stud, tightening them with wrenches, and use the plane of the created stop to install the knife.

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

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

Set the correct direction of rotation of the rotor with the switch on the drill. When you turn on the trimmer, the nut should work on the knife clamp, and not unscrew. Otherwise, the sharp-edged blade may fly out of the mount.

Trimmer Line Attachment

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

The fact is that in the process of work, when the fishing 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 nozzle after complex mechanical adjustments. A one-time attachment of the fishing line requires frequent shutdowns of the trimmer to replace it.

Take care of your safety first. For this:

remember the rules for handling electricity again;
do not work without protective covers with open rotating knives;
do not trust strangers without proper preparation for your dangerous homemade products;
when mowing, do not be distracted, but control the working area. Do not allow children, animals, casual visitors to it.

A homemade lawn mower helps you feel all the charms and disadvantages of electric grass mowing, features of work similar devices, the need to balance the center of mass. After acquiring a little experience in using it, it is easier to choose factory model professionally prepared for long-term use.

How make a trimmer do it yourself

How to make a trimmer with your own hands

How to get rid of ticks in a summer cottage was described earlier, now the question will be considered - how to make a trimmer do it yourself of the most improvised 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, and in most cases, it is not really needed.

The advantages homemade trimmer from a drill or grinder, it will be that when you need 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. When not needed, the drill or grinder is removed from the trimmer and used for its 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.

Making a trimmer from a drill do it yourself

The main requirements for a homemade trimmer are first imposed 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 on which the drill will be fixed. How to make homemade protection for a trimmer with your own hands In the summer, to make a summer cottage. The handle must be made of strong materials, it is possible, naturally, from tree species, but it is better to use an duralumin pipe for these purposes.

Protective casing for trimmer

Making a protective cover for trimmer.

Motokosa. How to replace a broken shield.

Motokosa. How to replace a broken shield. How to make homemade protection for a trimmer with your own hands. How to do fuel mixture for trimmer or lawn mower. The shield broke within a few days. Maybe I'm out of luck. In the high

In addition, working with the trimmer after its assembly 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 the side of it, etc.

First, the trimmer handle is prepared, on which the drill should be fixed. To fix the drill, you will need long bolts and metal clamps. Be sure the power cord of the drill must be tied to the trimmer handle. It is impossible for the wire to hang out and be a danger if it gets under the cutting element of the trimmer.

How to make a trimmer knife: materials

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 production. trimmer from a drill. How to make a trimmer cover for a hole for a trimmer rod and. If you are interested in the following questions, for example: How to make a fuel mixture for a trimmer (lawn mowers). There is only a slight difference in the attachment of the grinder to the holder. A metal pipe can be chosen as a trimmer handle, to which a plate with a hole for fixing the grinder with a bolt must be welded at the end.

Small changes also affected 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 of a disk for concrete, with sharp edges pre-cut, which are just designed for mowing grass.

The question is how do a trimmer from a drill or a grinder is completely solved on our own. 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.

From Bulgarian

Every master has a Bulgarian. This is the most suitable tool to create a trimmer. Unlike store devices, it is stronger in power and has good revs. Consider how to make a trimmer from a grinder with your own hands, the order of work:

First prepare the staple. It is designed to girth the body of the grinder. A metal plate is applied to the body and bent.
On both sides of the body there are threaded holes in which the toggle handle is attached. A trimmer bracket is attached to them.
Holes are drilled in the bracket on both sides so that they correspond to the openings located on the tool body. For accuracy, marks are made on the part with a marker, clamped with a vise and drilled.
Then a guide is attached to the bracket. Its size should correspond to the length of the body or be slightly shorter. The guide is attached welding machine, the remnants of scale are knocked down. The part is polished with a brush for metal.
From metal pipe make a handle (rod). To fix the handle under a slope, the tip of the pipe is cut under the bevel. The finished handle is welded to the structure, the scale is knocked down and the part is cleaned with a brush.
To attach the tool, you need to unscrew the protective disk of the grinder.
Then the homemade product is installed on wheels. To do this, you can borrow wheels from a trolley or baby carriage with brackets.
First, the grinder is mounted, then the wheel with the bracket. Everything is bolted on. On the other hand, they make the same fasteners.
The cutting unit is made of steel cable. A nylon wire designed for trimmers is suitable. It is threaded through the clamp nut and the key hole in a criss-cross pattern. Then the nut is tightened together with the cables.
The wire is fixed with electrical tape.

How to put a knife on a trimmer

With the advent of summer, many homeowners are worried about the question of how to put a knife on a trimmer. More burning questions are why and when it is purposeful to replace the fishing line on a lawn mower with a stronger cutting element. In our article, we will try to disassemble all this and give helpful tips summer residents.

Why you need to put a knife on the trimmer

A trimmer with a knife mounted on it is more convenient total use for more comfortable mowing of the highest and coarsened grass in the country. The fishing line on the lawn mower does not co-own in such cases. Installing a knife on a Chinese trimmer how to remove and install an old chain. The narrow one breaks very quickly. Discussion trimmer stihl fs 55 on the casing below I don’t 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 onto the spool. This increases the load on the engine. As a result, the piston group and other moving parts of the unit wear out very quickly.

If weed mowing is done with an electronic trimmer without a knife, with only a fishing line, even if it is thick with a curly section, the problem cannot be solved. 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 around the spindle makes a strong resistance to the shaft, reminiscent of a speedometer cable, which does not stand up and twists.

In order to protect equipment from early wear, manufacturers have provided for the possibility of installing special knives on trimmers. The design and shape of the available cutting parts makes it easy to manage not only with coarsened and overgrown grass, but also successfully fight with young shrubbery.

What knives to put on electric and lawn mowers

Before we take and put a knife on a lawn mower, 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 Supplies. In general, the whole cutting tool, designed for mowing grass, can be systematized:

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

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

Assembling the guard of the Huter trimmer

Making a protective casing For trimmer.

Protective cover for trimmer

Motokosa. How to replace a broken shield. The shield broke within a few days. Maybe I'm out of luck. In high

Straight rod for petrol trimmer and curved for electric

Putting a metal knife on an electric trimmer does not allow its design features.

The curved rod of the unit reduces the distance from its working part to the legs of the mower. In the event of a collision of blades with a stone or other hard object, the scythe is thrown to the feet.
The high torque that we mentioned above, in the event of a metal knife colliding with a hard object, transfers a large load to the flexible shaft of the trimmer and its motor. Which causes them to fail prematurely.
The handle of the electric scythe most often does not have a restrictive bar that plays the role of a stop. But you should not rely only on them, since not the casing 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 on trimmers with electric motors only plastic knives. In a collision with an obstacle, the blades are destroyed, thereby protecting the mower's legs from possible injury.

Plastic blades work well with overgrown and dry grass. They can cut nettles and burdock stalks.

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

The straight bar design increases the distance to the legs, which provides the cutter with complete safety.
Comfortable U-shaped and J-shaped handles allow you to firmly hold the tool. The D-shaped handles of the lawn mower are equipped with a limiter resting against the leg of the mower, which does not allow the head to be allowed to approach the legs when meeting cutting disc with a hard barrier.
Clutch gasoline engine allows you to smoothly gain momentum to the optimum level. And when the blade collides with a hard surface, it is able to extinguish part of the impact.

How to put a knife on the trimmer

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

The algorithm for installing a knife on a trimmer is as follows:

We remove the protective casing;
We block the drive. To do this, it is necessary to combine two holes - in the shaft hub and in the gearbox cup. After combining them, insert the pin into the holes;
We unscrew the spool with fishing line clockwise from the hub or fastening nut holding the boot (if the trimmer has not yet been used);
Next, we install the cutting knife, so that the splines on the hub washer coincide with the recesses in the hole of the cutting disc;
We install the duster;
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.

in the summer to country cottage area looked neat, you have to mow the grass often. A trimmer helps a swiftly ordinary scythe to cope with this - a light manual lawn mower in the form of a cane.

A sort of electric scythe, only instead of a blade it has a fishing line.

A recognizable shortcoming of trimmers is that it is impossible to work with them without special protection (masks and glasses): the grass scatters at high speed in different directions, falling into the face and eyes.

The reason for this is a small shield above the rotating line.

To solve this problem, I cut the "native" plastic shield, leaving only the third part attached to the bar.

Then I made a new one from a duralumin sheet 0.2.4 mm wide and 250 × 250 mm in size, attached it with 2 screws from above to the rest of the former shield.

Instead of aluminum, a rubber plate is used in a different way than linoleum, but then the shields made of these materials will have to be fixed with metal wire so that the edges do not accidentally fall under the spinning fishing line.

In the process of using any electronic trimmer one big flaw appears: the resulting grass juice and haylage scatter far to the sides and up, covering the scythe with greenery from head to toe. You have to use overalls, a mask to protect your face and eyes, alas, dust clogs into boots, sits on a headdress. After an hour of work, the mower turns out to be “all covered with greenery, completely all over”! You have to waste extra time on the next "sanitary cleaning".

Increasing protection on the trimmer at home. Additional protection for trimmer/ protection trimmer

The reason for this cut is that trimmers have an extremely small shield over the spinning line. In mine, for example, the shield occupies only the sector that corresponds to the numbers from 4 to 8 on the watch dial, which is obviously not enough.

To eliminate this shortcoming, I cut off the plastic shield in my own trimmer, leaving only the third (central) part attached to the bar. Then he made an enlarged shield from a duralumin sheet 0.3.2 mm wide and 250 × 250 mm in size, which he attached with 2 screws from above to the rest of the former shield (see Fig.).

In the course of the resulting new shield began to cover the entire semicircle of rotation of the fishing line, facing the mower, protecting it from flying greenery. The effect of such modernization was excellent! Now even boots do not get dirty above half of the tops.

If the passage of the absence of an duralumin sheet, a rubber plate is used, in other words, linoleum. To prevent the edges of such material from hanging down, they will have to be reinforced from above along the perimeter with metal wire. At the same time, the peripheral parts of the material must be held in a raised state by the wire. The shield material is attached to the wire specifically in these places, unattainable for a rotating fishing line.