I often work with metal in the air, where it is impossible to connect to a stationary power supply. Therefore, you have to buy a power tool that can work autonomously. I usually buy such equipment in specialty stores or on the Internet. However, sometimes there is an opportunity to show your creativity. At one of these moments, I decided that an autonomous grinder, assembled with my own hands, would be a good addition to my tool arsenal.
Source 7745.by
How to make a mini grinder yourself
The need for a miniature tool exists where a person is engaged in the manufacture of souvenirs, models of ships and aircraft, small technical units and parts.
Miniaturization comes in two ways. The first option involves the production of only miniature tools - disks, cutters, etc. The second option involves the production of grinding tools based on miniature electric motors.
First option - Using a drill + (Video)
The first option has a simpler solution. Let's say you need to make a miniature grinding wheel that will be installed in a drill or screwdriver. To do this we can take a broken disk. Using a caliper, we draw a circle of the required dimensions on it. Then we cut out the future miniature disk along the drawn circle. In its center we drill a hole into which we insert a bolt with a diameter of 6 mm. We put the washer on the bottom and tighten it with a nut.
The bolt will be the axis of rotation of the disk. We insert it into the chuck of a drill or screwdriver and clamp it. With this tool you can cut materials in hard-to-reach places or those that are small in size. Finished parts can be sanded.
It is easy to make a miniature cutter for cutting small parts from plastic or wood. To do this, take an ordinary tin stopper from a glass bottle. In the center of it we make a hole for installing the axle. The same bolt with a diameter of 6 mm can serve as an axis. Align the edges of the cork and cut out the teeth. It is advisable to make minimal markings.
Such a cutter, loaded into a drill or screwdriver, can easily cut small wooden planks, for example, for modeling. Plastics also lend themselves to this simple tool.
Second option - Self-assembly + (2 videos)
If the task is to make a miniature instrument with your own hands, then you must initially select an electric drive. A motor from various devices - a printer, an old cassette recorder, or from an ordinary children's electrified toy - can be used as an electric drive.
Depending on the power of the electric motor, you can build a mini grinder in two directions. The first direction is to use a network power source. For example, from an old mobile phone. The second direction provides for a completely autonomous model consisting of a motor that will be powered by batteries or accumulators.
The difference between the two directions is in the design of the case. In the first case, space will only be required for the electric motor, and in the second, a battery compartment will need to be installed.
It is very convenient to use a piece of PVC pipe for the body. If its diameter is slightly larger than the diameter of the electric motor, then electrical tape can be wound onto the motor. You can secure the engine using a glue gun.
As plugs, you can use plugs that are placed on PVC pipes during transportation and storage. It is necessary to make a hole in the front plug for the motor shaft, and in the rear plug for the power wire. The power connector and switch must be secured to the housing.
The ideal option would be to attach some kind of collet clamp to the shaft. This will allow you to use standard burs, drills and non-standard mini cutters and discs. If installing a collet clamp does not work, you can connect the shaft and cutting tool using a double contact from an electrical block.
In a similar way, you can make a case for a mini angle grinder with autonomous power supply. Only after installing the engine in it, it is necessary to install the battery pack. The battery wires will be connected through a switch mounted on the case.
In both cases, on mini grinders you can use both homemade tools and standard industrial ones - burs and drills.
https://www.youtube.com/watch?v=8wihkqVEz1k
Wind generator
Using a screwdriver , you can design a small wind generator for a summer house or personal plot, and be independent of the power supply. It will also help during a power outage.
It will take a little time to create a wind generator. from the screwdriver . The motor shaft is attached with a bracket to a plastic plate. We attach the flywheel to the end gear with bolts and attach four blades made from PVC pipe to it. You can use a tea can for the body, carefully sealing the cracks with sealant. The wind generator is ready to provide electricity that costs you nothing.
Wood lathe
A wood lathe will become an essential tool for home craftsmen. Round blanks, door handles, spherical and cone-shaped fragments for wooden railings, chair legs and much more - all this can be made using a homemade lathe based on a screwdriver .
There is no need to spend money on factory equipment, if such a lathe can be made with your own hands from an old screwdriver without much effort, using a minimum of funds and materials.
We can briefly describe one of these options for a “homemade” machine. A rectangular box (frame) is made from plywood with three sides. A seat is cut in the short side. A screwdriver is installed in this simple wooden frame, with the button up.
The bed, in our case a rectangular wooden box, is screwed to the table and pressed with a clamp. This is done in order to securely fasten the frame along with the tool to the work table.
A wooden block is used as a support bar for the cutter, which is also screwed to the table with a clamp.
A piece of rod with a thread that is convenient for hooking is clamped into the screwdriver chuck. A wooden blank (blank) is mounted on the rod. The screwdriver turns on and spins the wooden piece. Using a cutter, leaning on a support bar, the craftsman cuts out the desired volumetric-shaped part.
The tool is extremely necessary for craftsmen who use wooden parts and fragments in their work.
Electric snowmobile
How much fun winter days bring to children! Skis, skates, sleds. How many times do kids ask adults to ride them on a sled? It is difficult to deny children such pleasure. Home craftsmen approached this issue more thoroughly and made the sled “self-propelled.”
All you need for this is a source of torque. This source, or rather the base, will be a screwdriver with a working battery.
READ Ushm 125 Soft Start Adjustment of Speed
First, the iron structure of the “sleigh” itself is selected. This could be a real sled with steering. Or maybe homemade ones that are mounted on frames and also have a handlebar, sometimes a bicycle handlebar. But be sure to install a handle on the steering wheel, which will serve to turn the engine on and off. Outwardly, it will look like the brake handle on a sports bike.
Since home craftsmen come up with different designs for snowmobiles, the systems for attaching a screwdriver to an iron platform are also different. Only by generalizing can we bring together the principle of installation and action, which looks like this. A wheel is installed on the back of the sled using a special metal structure, and a screwdriver is installed above it. In fact, a screwdriver imparts torque to the wheel through a system of two sprockets and a chain. screwdriver rod rotates the drive sprocket. The sprocket transmits rotational motion through the chain to a second sprocket, which is mounted on the wheel. Thus, the screwdriver makes the wheel spin and push the sled.
All that remains is to bring the control system to the steering wheel. The control is a cable system, one end of which is connected to the screwdriver power button, the other is attached to the handle on the steering wheel.
the screwdriver mechanism on and off .
Of course, it will take effort and time to cope with such work. Buy a sled or material for the base, a battery-based screwdriver itself. But the efforts you make will more than pay off with children's joy and those emotions that cannot be described in words and cannot be calculated in monetary terms.
Electric car
How to remain indifferent to a small car passing by? This “homemade transport” will interest both adults and children.
All kinds of cars are created by the talented hands of our craftsmen. In their work, they use PVC pipes, gears from motorcycles, wheels from a garden wheelbarrow, and frames from a bicycle. Surprisingly, all these not very necessary details turn into a wonderful “adult” toy.
There are a wide variety of designs - three-wheeled, four-wheeled, made of metal, wood, plastic. The driving mechanism of all these cars has the same tool - a screwdriver with a battery.
The screwdriver transmits torque to the rear-wheel drive wheels through a chain drive (a large sprocket on the wheel and a small drive sprocket on the screwdriver shaft, a chain from the bicycle). The screwdriver turns the small driving sprocket; through the chain, the torque is transmitted to the large sprocket, and from it to the rear-wheel drive wheel. Thus, the rear wheels push the front wheels and the car moves.
The on/off control is output to the pedal via a button pressed by the pedal lever. Just a small press of your foot is enough - the button is pressed and the “vehicle” is set in motion!
How to make a grinder from an angle grinder?
A grinder is a belt grinder. This tool is produced by manufacturers in independent modifications. Remaking the grinder will help you gain access to the functions of the grinder without purchasing an additional tool. There are many modifications of a homemade grinder. The main difference between them is the degree of complexity of assembly. Below is a description of converting an angle grinder into a grinder in one of the simplest ways.
For assembly you will need the following materials:
- 70 cm of metal tape 20x3 mm;
- three bolts with threads corresponding to the threads of the mounting holes in the gear housing of the angle grinder;
- several washers and nuts of the same size;
- three bearings;
- a small pulley with a hole diameter equal to the diameter of the working shaft of the angle grinder.
Assembly of the frame structure. The main frame of the grinder has the simplest modification: it consists of a horizontal part made of a prepared metal strip and a fastening part shaped like the letter “C” attached to it. The fastening part is designed to secure the entire grinder frame to the gear housing of the grinder. To do this, holes are drilled in it, which must coincide with the holes in the gearbox. They are designed for screwing in the handle of an angle grinder. The oval shape of the holes will make it more convenient to attach the frame to the angle grinder.
The horizontal part of the grinder is welded to the fastening part so that the edge of the first is in the middle of the latter. When cooking, the correct position of the edge of the horizontal element must be observed. It should have the best resistance to lateral loads that arise during the operation of the grinder. Installation of belt drive. The polishing machine operates on the principle of belt transmission of rotational force. The sanding tape acts as a belt. To carry out the transmission, it is necessary to secure the pulley on the angle grinder shaft using a nut of the appropriate size.
At the end of the grinder frame, which is opposite to the angle grinder shaft, a hole with a diameter of 6 to 10 mm is drilled. A bolt is installed in it. Its direction must correspond to the direction of the gear shaft. Several bearings with an internal hole diameter exceeding the cross-sectional diameter of the bolt by a maximum of 1 mm are placed on the bolt - this will give the bearings the opportunity to sit tightly and not cause vibration during operation of the future belt sander. The bearings are secured to the bolt with a washer and nut.
The final stage of assembling a hand grinder is preparing the sanding cloth. The usual abrasive belt used in factory modifications of grinders is cut in the longitudinal direction. The width of the cut part should correspond to the width of the pulley and bearings located on the opposite side of the grinder frame. Additional Information. When assembling this model of grinder, it is worth considering that the length of its frame matches the length of the sanding belt. The grinder attachment can be of a fixed size for a tape of a certain brand or with the ability to adjust the tension.
To introduce adjustment properties into the product design, you need to machine the existing holes in the frame. We are talking about the holes used to fasten the structure to the gearbox housing, as well as the one used to hold the bearings. During the grooving process, the holes should acquire an oval shape - this will allow you to move the frame to the side, thereby adjusting the tension of the belt drive. To improve the properties of tension fixation and prevent its weakening during operation of the tool, it is necessary to place ribbed profile washers under all nuts.
A finished variation of the homemade grinder design is shown in the following photo.
Making your own devices
To make working on an angle grinder easier, all sorts of designs have been invented that increase its functions. The presence of equipment makes it possible to use angle grinders as a belt grinding machine. It is not difficult to make accessories for an angle grinder with your own hands, and it will also cost much less.
Accessories for grinders
- Tripod
- Retainer
- Fraser
- Miter box
- Wall chaser
- Extension
A tripod is a device that frees one hand. The angle grinder is held with only one hand, and with the other hand it is possible to support the metal and turn it if necessary. In addition, it makes it easy to set the desired cutting angle. It allows you to do work efficiently and safely. The frame is made of metal profiles, a shock absorber, and sometimes even plywood is used. Such an improvement is only permissible for a machine with 125 mm discs; with a larger size it is dangerous, since you have to remove the casing. You can take different options as a basis or make your own drawing. The main thing is that the tool is securely fastened. The most convenient way is when the angle grinder is attached to the protection casing. You only need 2 10mm bolts and 2 nuts, which are attached to the outer part of the casing. There are 2 more plates and a pipe onto which everything is screwed. And the switch should be made not fixed, you can use a foot pedal, then in an unusual situation it is easy to stop the machine. If the design for cutting metal is strong, then you can use it for sawing wood.
Clamp – there are many clamps, but the best option for fastening an angle grinder is a vice. They hold firmly and there is no need to support with your hand, thereby reducing the risk of injury. Rotary vice increases the capabilities of the machine (oblique cut). When you install the desired disk or file in a vice, you get a sharpening machine, but after unscrewing it, you can do the work manually. And by attaching stops with a slot across the disk, very precise processing can be achieved. The most popular option is a band sawmill made from an angle grinder. You just need to have a reliable frame and strengthen the machine well.
A milling cutter is another device for an angle grinder. The machine has a powerful engine, so it can be converted into a milling cutter. To do this, you should take the shaft into the opening of the workbench and put a chuck with heads for milling on top. The resulting homemade device for an angle grinder is used to process hard wood.
It is important to remember that the device is not designed for this type of work, so you need to take care of your safety.
A miter box is a rotating surface for a grinding machine. Using this device, it is easy to cut plinths, baguettes, profiles at the desired angle
You just need to install the desired disk, then the surface is fixed at an angle of 45 degrees, and the machine is ready for work. You can cut any platband for a wooden house or paving slabs.
A wall chaser is a necessary device for an angle grinder. Used for laying wiring by hollowing out recesses in the wall. However, this is not safe. When making an attachment for an angle grinder that works on a dense base, it can be used to cut walls along the entire diameter of the disk. With a good sole for an angle grinder, its guiding movement is carried out smoothly, without much effort.
Extension cord – used for plumbing and plumbing work in hard-to-reach places.
Secure tool mounting
Many people, inspired by the idea of making a stand, look for drawings on the Internet, without thinking that there may not be any for their instrument, since each model is individual and the fastening to it must be done according to the situation.
I propose to look at different examples of how people made fastenings, and we will take the best from each. Here are a few photos of the location and fixation of the angle grinder based on the needs and desired functionality.
| No. 1 Attaching an angle grinder to a frame | No. 2 Another mount for an angle grinder |
| No. 3 The simplest option for fixing a tool on a pipe | No. 5 Another example of an interesting fastener |
As you can see from the photographs, the mounting of the grinder is individual for each, but the most important thing is that the tool is securely fastened in each of them. In the first photo, the tool is inserted into the frame and secured with bolts at the handle attachment points.
The second example is similar to the first, only the frame has an individual design and a control handle has been added to it, in the form of a welded 20x20 pipe to control the cutting force and ease of operation.
The third option generally captivates with its simplicity and minimalism. The grinder is attached to a protective casing, in which holes are made for bolts and the entire machine consists of a minimum number of parts.
So, we decided on how to mount the tool. In our case, this is the third option - attaching the tool to the protective casing. It's extremely quick and easy to do.
You will need two 10mm bolts and two self-locking nuts, only the nuts must be attached to the outside of the casing. A couple of plates and a pipe on which everything is attached. I suppose it won't be difficult to find such parts. Watch the video to see how easy the installation is
Features of using an angle grinder
metal cutting
If you also use attachments with this tool, you can expand the number of options for its use. In particular, using this tool with attachments, you can perform high-quality grinding of the base of workpieces. They will be cleared of foreign inclusions. Attachments for grinders can be purchased at the store. But if you do not want to pay money, then you can make them yourself.
In some cases, this tool is used as a wall chaser. With its help, grooves are created for laying pipes and electrical wires. To use an angle grinder in this capacity, you will have to perform some manipulations and increase the standard width of the protective casing. In addition, you will need to make a support plate.
This tool can be used with one disk or several at once. If the grinder is used with two disks, then it is necessary to make some changes to the attachment point of this tool. After this, the grinder can be used in standard mode.
It often happens that during repair work there is a need to clean the base of parts that are difficult to access. In such cases, craftsmen most often resort to using a homemade device for an angle grinder in the form of a special attachment, thanks to which a small disk can be carried beyond the dimensions of the angle grinder.
In this case, the rotation will be transmitted using a special belt drive from the main drive. Using this design, materials cannot be cut. However, scale can be removed from the surface of materials without any problems. It often occurs on the surface of welds.
Currently, the market offers a large number of attachments for tools such as an angle grinder. Their use allows you to significantly expand the options for using this tool. If we talk about the most commonly used attachments for grinders, we can highlight the following:
- a device for sanding the base and removing the paint layer from the surfaces of materials;
- beds;
- protractors.
Materials and tools to make attachments for an angle grinder
The cost of the devices is not very high, so everyone can afford them. There are also no difficulties in finding these attachments. However, despite all this, many people still decide to make attachments for an angle grinder with their own hands.
If you decide to make attachments for this tool yourself, then before you begin, you need to prepare the following tools:
- An electric drill, it is advisable to purchase a set of drills in addition to it;
- It is advisable to choose discs with a diameter of 125 mm.
- Wooden bars.
- Metal corner.
- Duralumin steel plate.
- Self-tapping screws.
Advantages and disadvantages
Making a stand for an angle grinder with your own hands provides a number of advantages. These include:
- the ability to create a product with the required dimensions;
- the person himself chooses the functionality of the machine being created;
- such a product has sufficient strength;
- the possibility of skew of the cutting wheel and its deformation is eliminated;
- the design is easy to use and fully complies with the desired performance characteristics;
- all work is carried out at minimal financial costs;
- You can remove the grinder at any time and restore its mobility.
This product allows you to perform the necessary functions with extreme precision. Fully meets safety requirements.
Its disadvantages include the lack of control over the work performed and its compliance with quality. Therefore, all actions must be performed diligently and strictly adhere to calculations and drawings.
The second option is complete assembly with your own hands
Based on how much power you need for a mini grinder, its production can proceed in two directions. In the first option, a network power source will be used, and in the second case, the device will become completely autonomous through the use of batteries or a small accumulator.
Such devices will have different appearance. A stand-alone device will require an additional battery compartment.
It’s easy to use a PVC pipe as the body of a mini grinder. If the diameter of the pipe is larger than the engine, you can wrap electrical tape around it and attach it to the body using a glue gun.
As plugs, you can use ordinary plugs that fit on the same PVC pipe. A through hole is made in the front plug for the shaft, and in the rear plug for the wire. On the case you need to install a power connection connector - a switch button.
If you can attach a collet clamp to the shaft, then such a homemade product will be an ideal solution. The reception will ensure the use of standard burs and non-standard cutters and discs. If installing a collet clamp is not possible, you can connect the cutting tool and the shaft using a double contact from an electrical block.
In the same way, a body is made for a homemade miniature angle grinder that operates in autonomous mode. In this case, when installing the battery, you cannot forget about the battery pack equipment. The wires from this unit are connected using a switch that will be installed on the body of the unit.
In both cases, on mini grinders assembled with your own hands, you can use homemade tools or standard, industrial drills and burs.
A grinder made from a drill is easier to make than the other way around. The grinder or angle grinder (angle grinder) has become an indispensable electric tool due to the wide range of work that can be performed with its help, but it has its drawbacks that interfere with work. With its help, it is not always possible to get to hard-to-reach places and often it has high unregulated speeds, by the way, because of this, increased safety measures are required. But, despite all this, in certain cases it is irreplaceable. We can take advantage of all the advantages of an angle grinder, and also bypass its disadvantages. To do this, it will be enough for us to get hold of a drive shaft with flanges from an angle grinder (I took it from an old, damaged one).
Grinder from a drill in photo explanations
1 Drive shaft 2 Inner flange 3 Outer flange 4 Outer flange wrench 5 Metal cutting disc
We collect in the following sequence
We put the inner flange on the shaft so that it fits into the grooves, then tighten the outer flange.
Only the outer flange is tightened with a special wrench; the shaft is held in place by an open-end wrench on the reverse side of the inner flange.
For work, install a cutting (or other) disc
After installation, we tighten it and install it in the drill chuck; we also tighten the shaft in the chuck well.
Ready! Since the drill has a reverse, the working rotation must go clockwise, as when drilling. The arrows (in the photo) indicate the mandatory direction of movement of the disk; in this case, the outer flange with an internal (regular right-hand) thread will tighten itself and will not unscrew during operation.
You ask: “Where can I get a shaft from an angle grinder if I don’t have an old, faulty one?”
- In a power tool repair shop
- Order a turner
- Build your own version from scrap materials
- Perhaps there is a rem. kits (not interested)
I’ll share that I worked with this device this season and got a lot of pleasure from the maneuverability and the ability to adjust the speed of rotation of the disc if necessary. I think that, given the opportunity, you will evaluate everything yourself.
Good luck with your renovation!
—————————————— I’ll say right away that the idea of using a drill instead of an angle grinder is not mine, I just saw it for the first time at the master “body maker” Alexander Borchaninov.
Angle adapter - general information
It is designed for drilling holes/screwing in fasteners in places where it is impossible to position the working device at a normal angle, in other words, in confined spaces. The body of this nozzle is characterized by the presence of elements placed at an angle of 90 degrees. In this case, only the drive spindle and the working part holding the drill/bit are located inside the adapter.
Directly on the body there is a part for installing the adapter at a right angle, in which the rotary bushings are located one inside the other. They are installed inside the housing. This position ensures proper rotation and does not produce excessive noise.
In order to perform special types of work, for example, to tighten screws into a soft base, it is also possible to use a hand tool, for example, an angled screwdriver.
Option #1
The general view of the machine (although it is more of a device) is shown in the figure:
Its components are an angle grinder () and a pipe, which simultaneously performs the function of a frame and a working handle. It is not difficult to attach the grinder to it using a metal plate made of a thick piece of iron - it will take no more than half an hour. The support for the structure can be made from the same metal sample by welding a corner to it. The end of the lever is mounted on an axis, and its return motion is ensured by a spring.
This model is convenient because it is light in weight and can be installed almost anywhere. And assembly will not require any costs - everything you need can be found without difficulty.
Safety
When working with an angle grinder, stationary or manual, you should always remember safety
In the case of a stationary option, you need to take into account the direction of the tool and the position of the protective casing - it is important that the casing completely hides the area in which the operator is located. If you have a machine, you will probably have a desire to use the tool for purposes other than its intended purpose - for example, attach a saw blade for wood to an angle grinder, which is absolutely forbidden to do! But, besides this, unlike abrasive and grinding discs, saw blades have sharp teeth, which pose a high danger
Risking your health for a quick cut is simply unreasonable. After installing the tool and the new disk, the operation of the grinder should be checked for at least 1 minute at idle speed - the circle should rotate completely freely, without excessive vibration, without touching the casing
But, in addition, unlike abrasive and grinding discs, saw blades have sharp teeth that pose a high danger. Risking your health for a quick cut is simply unreasonable. After installing the tool and the new disk, the operation of the grinder should be checked for at least 1 minute at idle speed - the circle should rotate completely freely, without excessive vibration, without touching the casing.
Summarizing
There are several options for making a grinder from a drill, and all of them are quite effective depending on the tasks. It is better not to try to set serious tasks for the resulting tool, but it will cope with basic ones perfectly.
It is better to work on a hard surface, because... this will significantly improve operational safety.
And the most important thing is safety precautions, because... When repurposing, you can make minor mistakes, which will later have a very serious impact.
How to Rewind a Grinder to 12 Volts
Do-it-yourself grinder from a drill and chainsaw
Quite often in everyday life you need to repurpose working tools. This does not apply to the situation when you need to use an angle grinder, but you don’t have one. There are options to come to the rescue: a drill, a gas-powered one, or an electric saw, what is the duration of the project, what tools are available.
The usual ineffective method of getting an angle grinder from an electric saw
Grinder from a drill ()
For such a transformation, the following tools will be useful at home:
Before starting the transformation, you need to make sure that in the coming days the drill itself will not be useful in the work. In the last article, I told you how to connect and start a 380-volt motor in a single-phase 220-volt power supply. And later it’s enough to follow the step-by-step instructions:
- Choose an attachment for your future grinder.
- Take a small diameter steel rod without grinding off one of its edges. This action is necessary for the best fit into the nozzle. Also, for the best adhesion, you should slightly grind down the places that will come into contact with the petals of the cartridge, not the rod itself.
- Fix all parts.
A frisky, unusual method for creating an angle grinder
There is no second, more difficult method to achieve the desired result.
- The chuck is removed from the drill. For an angle grinder it is not necessary, so there is an option to clean it, lubricate it, or store it.
- Choose an attachment for the upcoming tool. It would be better if it were a part made of strong steel; a lightweight version would be inappropriate here.
- Choosing a rod. It needs to be of such length that its part protrudes outside the drill by 1.8-1.9 cm. Next, one of its ends should be ground off with a rasp so that in the process a rod comes out that completely coincides with the socket in the nozzle itself. Before the joint, it is worth smearing its ends with machine oil for the best passage.
- Installation of the ball bearing is carried out to the output area. A rod will be threaded through it for future fixation at the base. If this step is not necessary, the rod is fixed in its own place.
Do-it-yourself 12-volt cordless grinder
Bulgarian
homemade. Without machines, current was used in production (motor with a Bulgarian disk and almost
Following the instructions, the grinder comes out in 1-2 hours
There is an option to make an angle grinder using this method within a few hours, but you can’t get the necessary tool here.
Grinder made from chainsaw and electric saw ()
A more common method of making a grinder with your own hands is to convert it from a gas-powered or otherwise electric saw. Because of the ready-made fixture
Working of a disc for an angle grinder
will have a number of advantages:
- Possibility of autonomous operation.
- Highest power.
- Cost of operation.
To transform your chainsaw into a different electronic form into an angle grinder, buy special attachments at any hardware store. They will help to accomplish these transformations in a matter of actions.
For an angle grinder, you need to reduce the risk of disc failure. For these purposes, the saw is equipped with a special protective casing. It is also worth reducing the number of revolutions using a speed reducer.
Bulgarian 12 volt ()
For the client to be able to use an electronic instrument, its 12-volt power needs to be converted to 220.
You will learn how to correctly connect single-phase 220 volt electric motors using the example of motors from a washing machine.
Thus, it is natural to power it from a car in which a constant current flows with a voltage of 12 Volts, by installing a special invector.
Low-power invectors should be connected to the cigarette lighter; there are no special requirements. The only aspects are:
- Use at temperatures ranging from 15 to 50 0 C and average humidity.
- Do not allow devices to operate in direct sunlight.
- Do not use the space under the seats for storage, as the invector will heat up during operation. To cool it, you need unobstructed air flow.
It is recommended to connect a more powerful invector to the battery terminals. However, it is prohibited to turn on the ignition or engine if the invector produced is connected to a non-removable battery.
It’s natural to make an angle grinder from different tools that everyone has nearby. Thanks to the instructions, the work can be done with your own hands in just 2-3 hours.
Converting a chainsaw into an angle grinder
Sometimes it becomes necessary to cut off a pipe or corrugated sheet in a place where there is no electricity. For this, a chainsaw grinder is used, which can be easily converted using a purchased attachment.
- drive pulley or drum;
- protective casing;
- belt drive and a set of keys and studs.
To install this device on a chainsaw you need:
- remove the bar and chain;
- empty the oil tank and remove the clutch drum;
- mount the device pulley on the drive shaft of the drive sprocket;
- secure the protective device and install the belt drive;
- install the cutting disc - and the mechanism is ready to work.
The main advantage of the design is that it can be used in places where there is no electricity. When working with such a machine, extreme caution must be taken, since the chainsaw has a higher torque than a standard angle grinder. In this case, the risk of cutting blade destruction increases.
Screwdriver upgrade
If you don’t have a drill or chainsaw at hand, but you need to cut materials, you can make an angle grinder from a screwdriver. The algorithm for its modernization is almost the same as for making an angle grinder from a drill. The main element of the design will be the purchased attachment - an adapter or spindle of a faulty angle grinder.
The advantages of such a power tool include the rapid transformation of the mechanism and the ability to use it away from the electrical network. The homemade product can be used in cramped conditions where a standard angle grinder is not suitable due to its large size.
The main disadvantages of a homemade device are:
- short battery life (when using a cordless screwdriver);
- low rotation speed of the cutting disc - about 700 rpm;
- insufficient power of the electrical device.
Such a mechanism can only be used as a low-power angle grinder. With its help you can cut metal with a thickness of no more than 1.5 mm or a 20*20 corner. They can cut reinforcement with a diameter of less than 8 mm. Using a screwdriver as a full-fledged cutting tool will not work.
Making a mini grinder
The most important part is to place the bearing on a slightly processed (using a drill and file) mat stand. computer board and press in the cable.
We disassemble the alligator clip and use a homemade clamp to attach the bearing to it. We secure a piece of the speedometer cable with plastic clamps.
We place the electric motor itself, together with the relay, in a can of sealant cut to size (we fill the voids with pieces of rubber). Additionally, we secure it with a bolt that rests against the motor housing to prevent it from turning.
The cutting disc is also homemade. We make a protective casing for it from plastic.
The electrical circuit is simple: pressing the mini-button turns on the relay, which in turn closes the power contacts and supplies voltage to the electric motor.
After assembly, we get a new design with an unusual motor location. When working, we hold the tool in the same way as a regular grinder, only now it has become more mobile.
Summarizing
There are several options for making a grinder from a drill, and all of them are quite effective depending on the tasks. It is better not to try to set serious tasks for the resulting tool, but it will cope with basic ones perfectly.
It is better to work on a hard surface, because... this will significantly improve operational safety.
And the most important thing is safety precautions, because... When repurposing, you can make minor mistakes, which will later have a very serious impact.
How to make a frame for an angle grinder
It is obvious to everyone that it is extremely difficult to hold a heavy instrument for several hours. Therefore, to facilitate their work when performing an operation, many craftsmen make special devices called beds. When an angle grinder is equipped with such a device, cutting work can be done using only one hand.
To make a frame, you first need to make a wooden box. You can get by with only one side on which the tool will be attached. All other walls can be removed, and legs of a special design can be attached instead.
But in order to achieve the effectiveness of using an angle grinder with such a device, it is necessary to make some changes to its design.
The first step is to dismantle the casing of the angle grinder. After this, you need to put a disk on the instrument. When this action is completed, it must be pressed against the side wall of the device.
It is necessary to mark where the gap was made for the movement of the nozzle or disk. Its width should not be too large, otherwise foreign objects may get inside the structure during work.
If desired, the gap can be increased. The need for this arises in cases where it is necessary to replace the nozzles without completely disassembling the entire structure. Samples of wooden blocks can be used as support elements. After this, you can begin cutting workpieces.
We make a machine for cutting metal using high-quality equipment: TOP 3 manufacturers of angle grinders
This list contains brands whose equipment has received high ratings from ordinary users and professionals:
- Bosch. It is famous for its reliability and well-thought-out small design elements. A significant limitation is the high cost even in the basic configuration.
- Hitachi were initially expensive. But these days, part of the production has been moved to China, which has reduced costs. Some models do not have automatic speed stabilization under load.
- Makita - Reasonable combination of price and quality. All new high power models are equipped with effective overload protection, which extends the actual service life.
How to make a sharpening machine?
The grinder is used as the basis for the machine.
Some tips:
- Fasten securely so as not to damage the disk;
- Thick products are difficult to process if you create parts of the same type;
- Do not use both hands at the same time, risk of injury.
It is necessary to study the drawings and diagrams of the machine, what needs to be purchased, blanks, parts, tools, replaceable attachments, assemble and check the result of the work.
Assembly steps:
- According to the documentation, purchase the necessary materials, take into account all the important nuances.
- Create a table from steel (at least 5 mm), cut a blank for the frame.
- Attach the cross shaft, do not forget about the perpendicularity of the parts.
- Make holes in the sides to strengthen the angle grinder in the shape of the letter P, attach the strong part to the frame
- install a metal clamp for additional fixation
- Press in the unit bearings
- Secure the nodes on both sides to the axle
- Weld the side, install the protective spring
- Attach the pendulum, do not heat it, cool it with a cloth and water.
- Connect and test in idle mode, then in operating mode.
