How to make an angle grinder with your own hands from a drill, an electric screwdriver, a chain saw
Since the invention of angle grinder, the popularity of this tool is only increasing. This tool has a lot of advantages, thanks to which it remains in demand in various areas and sectors of life. The disadvantage of the standard angle grinder is the fact that it is not designed for work with miniature parts. Such a problem was solved by the release of mini grinders.
If you can not buy a tool, then the mini angle grinder can be made by yourself.
Why you need the smallest angle grinder
Angle grinder angle grinder angle grinder of the standard type differs from the mini angle grinder in size, but otherwise the functionality is almost the same.
Small angle grinder is mainly used in areas where work with small parts is performed. Unlike a standard-sized grinder, which requires two hands to hold it, the mini angle grinder is much easier to work with.
The tool has low weight, so the operator can hold it with one hand, and with the other hold the part.
Mini-tools are used mainly by jewelers, where the smallest precision in the manufacture of those or other small parts is important.
This tool can be used when carrying out repairs of watches, electronics, small parts. Designed mini angle grinder for cutting metal, plastic and wood products.
Demand for them occurs even in everyday life, when it is necessary to grind, sharpen or saw a small part.
Important to know! If there is a need to use the mini angle grinder, then you do not need to buy it. It is easy enough to make, and requires a minimum set of parts.
How to make a mini angle grinder yourself?
In order to make your own mini angle grinder, you need the main element. an electric motor.
You can get it in an old cassette recorders, in battery-operated cars, you can order on the Internet, buy it in radio stores, or find it in the attic or the garage.
As the power element of such a motor can be used batteries, rechargeable batteries or a power supply from a cell phone (power supply). The main thing is that the voltage and current of the source are suitable for the motor.
From the motor it is necessary to lead out two wires, through which the power supply for its functioning will be carried out.
Depending on the size of the motor, you need to find an appropriate diameter of PVC pipe or a tube of something else. Inside which the device will be placed.
Motor shaft must protrude from the tube. It is also necessary to leave space in the tube for the battery and the switch.
It is important to know! The electric motor inside the tube should be well fixed, otherwise when you try to saw off something, it will move or rotate inside the body.
To plug the back of the used body tube, you can use appropriate pipe plugs(if you used standard PVC pipe) or make up the cover yourself. You should also cut two holes on the body or in the back cover:
- To install the button to start and stop the device being constructed.
- For the regulator of rotation speed of the electric motor shaft. This regulator can also be readily removed from an old tape recorder.
We recommend to place the button and the regulator so that the mini angle grinder can be easily turned on and off with one finger.
If the device will run on batteries, then you must provide for installation of a removable cover, by which the batteries will be replaced.
If the product will operate from the mains power supply, you can solder a suitable socket for its connection in the housing.
We recommend that you fit the electric motor shaft with a collet clamp. This will allow you to apply all kinds of disks, drills, and various special attachments from drills in a homemade machine. Collet mechanism can be found in stores that specialize in the sale of power tools or spare parts for electronics.
Special disks for work on the mini angle grinder can be purchased or make your own by cutting them out of a large disc.
Such a mini angle grinder is not suitable for cutting thick metal, but is quite suitable for cutting plastic, wood and other materials.
With these simple steps you can make the right machine, saving money and time you would have spent on searching for a factory tool.
If your work is professionally connected with the need to use a mini angle grinder, it is better to find and buy the factory version.
Pros and cons
The advantages of self-made products can include only cost savings, because almost all components for the manufacture of mini angle grinder can be found in the garage. In contrast to the professional mini-gritters, which are equipped in a set with all the necessary accessories, in self-made angle grinder such accessories are excluded, so they will need to buy or make their own.
By the minuses of mini angle grinder can be attributed the fact that in most cases it uses a low-power motor, while the professional models are motors more powerful and reliable.
In conclusion, it should be noted that if there is a need to purchase a mini angle grinder, it is worth giving preference to models from well-known manufacturers.
The main advantage of the mini-tool is its compactness, so you can perform work even in the most inaccessible places.
If a person in the line of duty often has to handle small or miniature parts, he must have a mini angle grinder. We advise to read the article about the homemade mini drill.
How to make by yourself
If there is no possibility to buy the factory nozzle, you can make a cutter from a saw yourself. To make an angle grinder from a chainsaw with your own hands will need the following tools and materials:
- working module (angle grinder);
- A professional saw with high power;
- factory tires. 3 pcs. (40-50 cm);
- drum. 2 pcs.;
- belt.
Instructions for self-assembly of the device:
- The belt is laid along the bar.
- Attach pulley to the drive sprocket, having previously installed it on the saw.
- The toothed wheel, located on the node of the angle grinder, is sharpened and removed.
- The pulley is assembled according to the diagram and welded to the base.
- To make the belt work smoothly, 2 guides are shortened. Sharpening 1 bar is carried out under the installation of the node of the angle grinder and weld them to the base.
- Then mount the grinding wheels.
It’s not difficult to make an angle grinder out of a chain saw, if you use the drawings and follow the instructions for making it.
Making a mini angle grinder
The most responsible part is to put the bearing on the slightly machined (with a drill and file) stand from the mat. the computer board and press the cable.
We disassemble the alligator clamp and fix the bearing to it with a homemade clamp. Fix a piece of cable from speedometer with plastic clamps.
The motor itself, along with the relay fit into a cut-to-size sealant bottle (fill the voids with pieces of rubber). Additionally fasten the bolt that rests in the motor housing against turning.
The cutting wheel is also homemade. For it we make a protective cover from plastic.
The electrical scheme is simple: when you press the mini-button a relay turns on, which in turn closes the power contacts and supplies voltage to the motor.
After assembly we get a new design with an unusual positioning of the motor. When working, we hold the tool in the same way as an ordinary “angle grinder”, only now it has become more mobile.
Here helps a homemade angle grinder on a volt, working from any portable powerful enough battery
To make a tool, we will take the motor from the compressor for changing the tires. We’ll take off the gearbox. Next, we’ll make an adapter. We use the old angle grinder body.
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Let’s install the button. Connect the wires to the motor. All that’s left to do is to finally assemble. We use cable ties to assemble. Screw them on with the standard screws in the front.
For aesthetics we can use the heat shrink. We will cut a corner to demonstrate the capabilities of our home-built 12V torch. We use a car battery. Start cutting. Attention! In the video, the master violates safety rules, does not use protective equipment. One-handed operation is not only inconvenient, but extremely dangerous!
The wire should be as short as possible. Ideally, no more than 1.5 meters. Cross section at least 4 square millimeters. Then you can use a small 12 volt battery. We know that the losses in the cable are very high at DC. It is important to be able to work within arm’s length.
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It will help homemade angle grinder on a volt, working from any portable quite powerful battery
To make a tool, let’s take a motor from a tire inflation compressor. Remove the gearbox. Then we make an adapter. Use the old angle grinder housing.
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Let’s Install a Button. Connect the wires to the motor. All that’s left is the final assembly. When assembling, we use clamps. Screw it in with the standard screws in the front.
You can use a heat shrink for aesthetics. Let’s cut an angle to demonstrate the capabilities of a homemade 12 volt torch. Use the vehicle battery. Start cutting. Warning! In the video the craftsman breaks the safety rules and doesn’t use any protective gear. Not only is one handed operation inconvenient, but it is extremely dangerous!
Keep the wire as short as possible. Ideally, no more than 1.5 meters. Cross section at least 4 square millimeters. Then we can use a small 12 volt battery. We know that cable losses are very high at direct current. It is important to be able to work within arm’s length.
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Homemade angle grinder powered by a volt battery
Angle grinder. a modern tool, which is used by almost all masters of iron. It is used for cutting material, sharpening tools, grinding parts. But there are situations when there is no 220 V mains supply or it is located far away and there is not enough cable for connection.
Help out is a homemade angle grinder that runs on 12 V, which can be connected to a small battery or to the car mains. The advantages of such a tool. the quiet operation, which allows you to use it without fear of problems with the neighbors.
This self-made motor is driven by an electric motor 775, working from 12 24 V. It has a cooling fan, the armature is mounted on bearings. All this makes the motor longevity even with active use.
In addition to the motor prepare: an adapter for the angle grinder, socket, through which the power source is connected, paint, switch, wire, screws, self-tapping screws. The body is made of a variety of PVC-parts used for the arrangement of water, sewage, electrical. Use a hacksaw for metal, glue, drill, caliper, drilling machine, marker.
For the housing (handle) prepare parts from PVC: a piece of pipe; 90° connecting angle; adapter to a smaller diameter. The adapter is glued to the angle piece, then to its free end. a piece of pipe. Make an elegant handle.
Make a protective shield that will protect the worker from sparks, splinters of the disk. Use an 11-cm diameter PVC plug. In its center, drill a hole with a diameter equal to the size of the part protruding from the motor housing (next to the shaft outlet). On the sides of it two more holes are made for fixing screws. Through the latter, a motor is attached to the shield.
Use an angle grinder to cut off a segment (about 3.5 cm high) of the cover to create the work area for the blade. The fastening holes must be parallel to the cut and remain on the part.
Cut off a piece of PVC pipe. Glue it to the outside of the protective cover so that the piece does not interfere with the installation of the motor. It will be inside this piece, which also provides the connection of the assembly to the free end of the corner in the handle.
At the free end of the handle’s corner, closer to the bend, arrange a number of holes in a circle, which will ensure heat removal from the working engine. To the same, closer to the edge, vertically glue an additional short handle from a piece of pipe of smaller diameter.
Paint the surfaces of all plastic parts of the handle and the guard with spray paint. Choose a color from the ones you like.
Screw the motor to the back of the protective cover. Insert the latter in the free end of the corner on the handle. join the parts with screws (better, it allows you to disassemble the tool in the future), by gluing.
The end of the handle is closed with a plug, in which the switch is placed, the socket for power connection. Under these details preliminary arrange suitable apertures; installation of the connector on glue. Before installing plugs solder wires running from the motor to the plug.
Provide the motor shaft with an adapter, fixing it with a screw that has a hexagonal head. Fasten the disk and try to work.
Assembling and testing a home-made angle grinder
Start making an angle grinder with your own hands need to prepare a piece of sewage pipe.
We take a tube of 50 cm and cut off a piece of 35 cm length from it. Next, we prepare the plugs. The large plug should be cut a little less than half, it will be used as a protection on the angle grinder.
To that plug, which is smaller in size, 50 mm, should be screwed corner.
On one side, the corner is screwed to the plug, and the electric motor is attached to the second half. The entire construction is assembled on bolts, it is not recommended to use self-tapping screws for this purpose.
Then you install the second 50 mm plug on the other side of the pipe. In its center it is necessary to make a hole for the button. Before you put the plug on the glue, you will need to solder the wires to the button and pull them through the tube to the motor of the angle grinder.
2 volt angle grinder with your own hands
Greetings handyman! Sometimes in life, there is a need for various tools. So, for example, most often such thing as an angle grinder comes in handy. With it you can cut, grind, turn and much more. But there are often places where you can’t reach the cable, or in general cases where you need something to cut away from the power grid. Here you will need a 12-V angle grinder which you can power from a small battery pack that can fit in your And if you are in a car, then simply connect the angle grinder to the power grid auto.
The main advantage of the power tool is that it is relatively quiet. This is especially handy if you need to “steal” something (just kidding of course).or maybe not). In addition, a 12 volt angle grinder can be used in the apartment without incurring the wrath of the neighbors.
As a basis the author has decided to use the 775 engine. It runs from a voltage of 12-24V, has a built-in propeller for cooling, and also the armature of the motor rotates on bearings. Thanks to all these features 775s are long lasting and are widely used in various home machines.
Well, everything else, i.e. the body, is made from PVC plumbing parts. Now let’s assemble.
Materials and tools that the author used:
List of materials:- PVC parts (look at the photo);- Motor 775 or similar;- Adapter for angle grinder;- Switch;- Connector for power supply;- Wires;- Paint.
List of tools:- Metal hacksaw;- Drill bit;- Glue;- Screws, self-tapping screws, etc.A drill, a marker, a caliper.
Step One. First of all we make the handle, you need PVC corner piece, cone-shaped piece and a piece of pipe. Cut off a piece of pipe and use glue to assemble the entire structure. As a result we have a light and steady handle.
Step three. Final assembly of the hullWhere the handle will be located, be sure to drill holes. They are needed to keep the motor cool, otherwise it might overheat. At the end of the work the author installs a vertical handle, which must be cut from a pipe. Just glue it to the body with epoxy glue. For quality gluing, grind the glued surfaces with an emery or a drill, as the author does.
Now you can paint the whole body in any color you like. For this purpose, it is quite suitable can of paint. Look at how beautiful the author’s work is!
Step seven. Let’s test!We connect the 12v DC power supply to the angle grinder, a power adapter or a battery will do. When plugging in correctly determine the polarity by experimenting, because the drive may not rotate in the right direction.
The author’s machine turned out quite powerful, with it he easily grinds, cuts steel. And if you install a disk from a circular saw, the device easily cuts boards, and all this is quite safe, because the motor power here is small. That’s all, I hope you liked the homemade. Good luck and inspiration for making homemade tools!
2 volt angle grinder with our own hands
Greetings hobbyists. At times in life, there is a need for a variety of tools. So, for example, more often such a thing as an angle grinder comes in handy. You can use it for cutting, grinding, sharpening and much more. But there are often places where you can’t reach with a cable, or when you need to cut something far away from the power grid. Here you can use an angle grinder for 12 V, which you can power from a small battery, which can fit in your And if you’re in a car, you just plug the angle grinder to the car’s power grid.
The main advantage of the power tool is that it is relatively quiet. This is especially useful if you need to “steal” something (just kidding of course).or maybe not). In addition, 12 volt angle grinder can be used in the apartment without the anger of the neighbors.
As the basis of the author has decided to use the motor 775. It runs from 12 to 24 V, has a built-in propeller for cooling, and even the engine armature rotates in bearings. With all these features, the 775s last a long time and are used extensively in various home machine tools.
And the rest, i.e. the body, is made of PVC plumbing parts. Let’s assemble.
Materials and tools used by the author:
List of materials:- PVC parts (see photo);- Motor 775 or similar;- Adapter for angle grinder;- Switch;- Connector for power supply;- Wires;- Paint.
Tool list:- metal hacksaw. drilling machine. glue. screws, self-tapping screws, etc.A drill, a marker, a caliper.
Step one. First of all we make the handle. You need PVC corner piece, cone-shaped piece and a piece of pipe. We cut a piece of pipe and with the help of glue assemble the whole construction. As a result we have a light and tough handle.
Step Three. Finishing assembly of the housingWhere the handle will be located, be sure to drill holes. They are needed for the motor to cool down, otherwise it can overheat. At the end of the work, the author installs a vertical handle, which must be cut from a pipe. We just glue it to the body, using epoxy glue. For quality gluing, grind the glued surfaces with an emery board or a drill, as the author does.
Now you can paint the whole case in any color you like. A spray-paint can will do just fine. Look at how beautiful the author’s machine is!
Step seven. Test!Connect the angle grinder 12v DC power supply, power supply unit or battery pack will do. When plugging in, get the polarity right by experimenting, because the disk may not rotate in the right direction.
The author has a pretty powerful machine, with it he easily grinds and cuts steel. And if you install the disk from the circular, the device easily cuts boards, and all this is quite safe, because the motor power is small. That’s all, I hope you liked the home-made device. Good luck and inspiration in making homemade!
Assembly of the node for fixing the disk
Particular attention should be paid to the mechanism assembly, which will be installed and fixed cutting wheel.
It can be made from a small piece of pipe of suitable diameter and a piece of stud, on which you could install pressure washers for the disk.
To the motor shaft of the homemade angle grinder, the mechanism is fixed with two hexagonal bolts.
For their installation, holes are drilled on both sides of the tube, and then, using a tap, you will need to cut the thread for bolt tightening.
Be sure to use personal protective equipment while working with the homemade angle grinder.
Let this angle grinder does not have great power, but it is still one of the most traumatic tools.
Mini angle grinder with their own hands
The need for a miniature tool exists where a person is engaged in the manufacture of souvenirs, model ships and planes, small technical units and parts.
The miniaturization proceeds in two ways. The first production method involves the construction of miniature tools only, such as discs, milling cutters, etc.д. The second option provides exactly the manufacture of grinding tools on the basis of miniature electric motors.
The first variant. Using a drill
The first option has a simpler solution. Suppose we need to make a miniature grinding wheel, which will be installed in a drill or an electric screwdriver. For this, we can take a broken disk.
On it, using a caliper, we draw a circle with the required dimensions. Then we cut out the future miniature disk on the outlined circle. In its center let’s drill a hole and insert a bolt with 6mm diameter in it.
From below put the washer and tighten the nut.
The bolt will be the axis of rotation of the disk. We insert it into the chuck of the drill or electric screwdriver and clamp it. This tool can be used to cut materials in hard-to-reach places or with small dimensions. It is possible to grind finished parts.
It is not difficult to make a miniature cutter for cutting small plastic or wooden parts. For this, we take an ordinary tin plug from a glass bottle. Make a hole in its center to install the axle. The axis can be the same bolt with a diameter of 6 mm. Straighten the edges of the cork and cut out the teeth. It is desirable to make a minimum of marking.
Such a cutter, loaded into a drill or an electric screwdriver, can easily cut small wooden slats, for example, for modeling. Plastics, too, can be cut with this simple tool.
The second option. Self-Assembly (2 videos)
If the task is to make a miniature tool with your own hands, then you must first select the electric drive. As the electric drive is suitable a motor from various devices. printer, old cassette recorder, or from an ordinary child’s electrified toy.
Depending on the motor power you can build a mini angle grinder in two directions. The first direction is the use of the mains power supply. For example from an old cell phone. The second direction provides a fully autonomous model from the motor, which will be powered by batteries or batteries.
The difference between the two directions in the design of the housing. In the first case, you need space only for the motor, and the second needs to install the battery compartment.
For the housing it is very convenient to use a piece of PVC pipe. If its diameter is slightly larger than the diameter of the electric motor, you can wrap electrical tape around the motor. You can fix the motor with a glue gun.
The plugs that are put on the PVC pipes during transport and storage can be used as plugs. Make a hole in the front cap for the motor shaft and a hole in the back cap for the power cord. On the housing should be mounted power connector and a switch.
The ideal is to be able to mount some kind of collet clamp on the shaft. This will allow you to use standard drills, bits and custom mini cutters and disks. If it is not possible to install a collet clamp, you can connect the shaft and cutting tool with a double contact from an electrical block.
In a similar way, you can make a housing for a mini angle grinder with self-contained power. Only after installing the motor in it, you need to install the battery pack as well. Wires from the batteries will be connected through a switch mounted on the body.
In both cases, the mini grinder can use both homemade and standard industrial tools. burs and drills.
How to make a mini angle grinder with their own hands from improvised means
Such a device as a small angle grinder, you need in the case when the engraver deals with small parts, for example, in the production of souvenir products. And yet, how to make a mini angle grinder with their own hands? For this there are two options.
First choice. using a drill
This option is simple enough. For example, you need to build a small circle for grinding, which will later be installed in the drill. Take an old or broken disk, mark an even circle on it, using a caliper. Cut out the shape. Drill a hole in the center and insert a bolt with a diameter of 6mm. Put a washer on the bottom and secure everything with a nut.
The bolt that we inserted into the center of the circle will become the rotation axis of the entire disk. The bolt is attached to the socket of the drill and tightly clamped. It’s done, now feel free to grind your parts.
It is not difficult to make a cutter for cutting small parts. Take a metal plug, you can find it on a glass bottle, and make a hole exactly in the middle. You can use the same 6mm diameter bolt as the axle. Unfold the edges of the cork and cut off the uneven teeth. It is better to make a marking.
Such a cutter will work well if you charge it into a drill. This tool will easily cut small wooden or plastic parts.
The second option is a full assembly with your own hands
How to make a mini angle grinder yourself from beginning to end? If you have such a difficult task, the first thing to determine is what will drive it. It can be powered by a small motor from various devices. such as an electric toy.
Depending on what power you need a mini angle grinder, its manufacture can go in two directions. The first option will use a mains power supply, but in the second case. the device will be completely autonomous through the use of batteries or a small battery.
Such devices will have different appearance. A self-contained unit will require an additional battery compartment.
As the body of a mini angle grinder is easy to use a tube of PVC. If the tube is larger in diameter than the motor, 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 are put on the same PVC pipe. In the front plug a through hole is made for the shaft, and in the back. for the wire. On the housing you must install the power connector. the switch button.
Machine for cutting circles out of metal
Cutting machines are usually based on the angle grinder. There are a dashing dime-a-dozen of these on the internet. On our site, too, many ideas on this topic, and we will not repeat.
And here is a machine to cut circles from sheet metal. this is a really cool idea.
With the self-made device you can cut circles of different diameters. It is quick and easy. In general, the homemade device is definitely worth your attention.
How to make a mini angle grinder with their own hands from improvised means
Such a device, as a small angle grinder, is needed when the engraver deals with small parts, for example, in the production of souvenir products. And yet, how to make a mini angle grinder with your own hands? There are two options for this.
The first option. using a drill
This option is simple enough. For example, you need to build a small circle for grinding, which will later be installed in a drill. Take an old or broken disk, mark an even circle on it using a caliper. Cut the resulting shape. Drill a hole in the center and insert a 6 mm diameter bolt. Put a washer on the bottom and secure everything with a nut.
The same bolt that we put in the center of the circle will be the rotation axis of the whole disc. The bolt is inserted into the socket of the drill, and tightly clamped. It’s done, now safely grind your parts.
It is not at all difficult to construct a cutter for cutting small parts. Take a metal cork, it can be found on a glass bottle, and make a hole exactly in the middle. You can use the same bolt with a diameter of 6 mm as an axis. Unbend the edges of the plug and cut off the uneven teeth. It is better to make a marking.
A cutter like this will work well if you load it into a drill. The tool will easily cut small wooden or plastic parts.
The second option. a complete assembly with their own hands
How to make a mini angle grinder yourself from start to finish? If there is such a difficult task, then first you need to determine what will serve as the electric drive for the device. Power can be supplied from a small motor from different devices. such as an electric toy.
Depending on how much power you need a mini angle grinder, its manufacture can go in two directions. In the first case, a mains power source will be used, and in the second case. the device will be completely autonomous due to the use of batteries or a small battery.
Such devices will have different appearance. Stand-alone devices require an additional compartment for batteries.
As the body of a mini angle grinder is easy to use tube of PVC. If the pipe is larger in diameter than the motor, you can wrap electrical tape around it and attach it to the body using a glue gun.
As plugs you can use the usual plugs that are put on the same tube of PVC. A through hole is made in the front plug for the shaft, and in the rear plug for the wire. On the housing you need to install the power connector. the switch button.
If it is possible to fix a collet clamp on the shaft, such a homemade device would be ideal. The reception will ensure the use of standard drills and non-standard cutters and disks. In case it is not possible to install the collet clamp, the cutting tool and the shaft can be connected by means of a double contact from the electrical block.
In the same way, a housing for a homemade angle grinder of miniature size, working in autonomous mode, is made. In this case, when installing the battery, you can not forget to equip the battery block. Wires from this unit are connected using a switch, which will be installed on the body of the machine.
In either case, you can use homemade tools or standard, industrial drill bits and burs on mini grinders, assembled with their own hands.
Mini angle grinder: features of making a homemade
Since the invention of angle grinder, the popularity of this tool is only increasing. This tool has a lot of advantages, so it remains in demand in various areas and sectors of life. The disadvantage of the standard angle grinder is the fact that it is not designed for work with miniature parts. Such a problem has been solved by the production of mini grinders. If you can not buy a tool, then the mini angle grinder can be made yourself.
Why do you need the smallest angle grinder?
Angle grinder angle grinder angle grinder of the standard type differs from the mini angle grinder in size, but otherwise the functionality is almost the same. Small angle grinder is used mainly in areas where work is carried out with small parts. In contrast to the standard-sized grinder, when working with which you need to hold it with two hands, then with the mini angle grinder everything is much easier. The tool is lightweight, so the operator can hold it with one hand and hold a part with the other.
Mini-tools are mainly used by jewelers, where the smallest precision is important in the production of various small parts. This tool can be used when repairing watches, electronics, small parts. Designed mini angle grinder for cutting metal, plastic and wood products. Demand for them occurs even in everyday life, when it is necessary to grind, sharpen or saw a small part.
Good to know! If there is a need to use a mini angle grinder, it is not necessary to buy it. To make it simple enough, besides for the manufacture requires a minimum set of components.
How to make a mini angle grinder?
In order to make your own mini angle grinder, you need the main element. it is an electric motor. Get it you can in the old cassette recorders, in machines running on batteries, you can order on the Internet, buy in radio stores, or find in the attic or the garage. As a power element of the motor can be used batteries, rechargeable batteries or power supply from a cell phone (power supply). The main thing is that the voltage and current of the source are suitable for the motor.
From the motor must be derived two wires, which will supply power for its operation. Depending on the size of the motor, you need to find the appropriate diameter of PVC pipe, or a tube of something else. inside which the device will be located. The motor shaft must protrude from the tube. It is also necessary to leave space in the tube for the batteries and the switch.
Important to know! The electric motor inside the tube must be well secured, otherwise it will move or rotate inside the housing when you try to saw something.
To plug the back of the tube housing you can use the appropriate pipe plugs (if you used standard PVC pipe) or come up with a cover yourself. Also on the body or in the back cover should be cut two holes:
- To install the button for starting and stopping the construction machine.
- For the regulator of rotation speed of the electric motor shaft. Such a regulator in finished form can also be removed from an old tape recorder.
It is recommended to place the button and regulator so that it would be convenient to start and stop the mini angle grinder with one finger. If the device will run on batteries, then you must provide for installation of a removable cover, which will be used to replace the batteries. If the product will operate from a mains power supply, you can solder a suitable socket for its connection to the housing.
We recommend that the electric motor shaft be equipped with a collet clamp. This will allow you to use in a homemade machine all kinds of disks, drills, and various special accessories from drills. The collet mechanism can be found in stores that specialize in the sale of power tools or spare parts for electronics.
Special disks for work on the mini angle grinder can be purchased or made by cutting them out of a large disk. This mini angle grinder is not suitable for sawing metal of great thickness, but it is quite suitable for cutting plastic, wood and other materials. These are such uncomplicated actions can make the necessary apparatus, saving money and time you would spend on the search for factory tools.
If your work is professionally connected with the need to use a mini angle grinder, it is better to find and buy the factory version.
Pros and cons
The advantages of homemade products can include only cost savings, as almost all components for the manufacture of mini angle grinder can be found in the garage. In contrast to the professional mini-gritters, which are equipped in a set with all the necessary attachments, in self-made angle grinder such accessories are excluded, so they will need to buy or make their own.
The minuses of the mini angle grinder can include the fact that in most cases it uses a low-power motor, while the professional models have more powerful and reliable motors.
In conclusion, it should be noted that if there is a need to purchase a mini angle grinder, it is worth giving preference to models by well-known manufacturers. The main advantage of the mini-tool is its compactness, so you can perform work even in the most remote places. If a person by virtue of duty often has to deal with the need to process small or miniature parts, then he must necessarily have a mini angle grinder. We advise to read the article about the home-made mini drill.
THE MADE angle grinder
On the pages of our website was published a lot of different homemade devices, greatly simplifying the work on the manufacture and repair of structures. Almost all of us have acquired minidrills, drills, and now try to make yourself an angle grinder. The advantages of such an electric tool over a large factory one are obvious. it’s small size and ease of use in hard-to-reach places, and the ability to feed it from a low voltage car battery. And the price (production cost) is much lower than that of a purchased mower.
I use ordinary 200 mm electro-corundum cutting-off wheels. The machining disc itself is broken out of a large, 200 mm with a pair of pliers. The 15 V supply is fed to the motor through a diode bridge.
Motor is taken from a 9 volt electric screwdriver. Unfortunately, I don’t know its brand and power, so I have to judge by the consumption only. Here is the motor itself
Home-made angle grinder power supply 15 V. Current varies from 2 to 13 amps depending on the load. It is possible to put a diamond wheel on it, it is enough for a long time and the purity of processing is noticeably higher.
Or equip the device with a thin circular cutter, turning it into a kind of circular saw. You can buy complete sets of these cutters in some online stores.
The transformer in the video is a “yellow bagel”. removed from the movie projector Rainbow-2, it has a winding of 20v with a tap of 15v, it was designed to supply the main lamp of about 300 watts and has a fairly large current. Rectifier diodes D242 get pretty hot during long-term work without radiators, so it is worth to equip them with a heat sink, and on especially heavy load. forced cooling. Even better would be if the power supply have the ability to adjust the voltage, in this case you can slowly change the speed of the drive.
Forum for discussion of the material DIY angle grinder
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Circular Saw
A nutrunner can be turned into a circular saw. To fix the future equipment is used plywood sheet, in the central part of which a hole is sawed to the size of the electric screwdriver. In the upper and lower part of the base the tool is fastened with self-tapping screws or clamps.
The saw’s cutting element can be fastened with the bolt M10X 50, to which a washer and a rubber washer are put. The cutting part is tightened in the upper and lower part of the bed.
To make the sides of the circular saw we use a sheet of plywood with the dimensions of 11,5X15 cm. They are assembled using self-tapping screws. In the central part of the frame is cut through (27×40 cm) to install the disk. It is important to fix the saw firmly to the base to prevent slackening during the sawing operation.
Winch
A simple winch made from an old electric screwdriver is an invaluable aid in the home. The winch motor can be made from an electric screwdriver battery with your own hands at home. A strong rope is attached to the body of the tool, for lifting weights.
As you can see, you can make a lot of different devices from an electric screwdriver. So if you are a jack of all trades, then by all means try to construct something.