How To Make A Key For An Angle Grinder

Varieties of devices

Angle grinder attachments exist with a wide variety of functions:

  • for smooth cutting;
  • for grinding;
  • for cutting bars and pipes with a diameter of 50 to 125 mm;
  • for peeling old layers from surfaces;
  • for cleaning and grinding;
  • for polishing;
  • chain saw for cutting wood;
  • for collecting and removing dust during operation.

These fixtures are also called accessories. They are often purchased separately from the main unit. Some of them can be made independently from available material or old technology.

All About Angle Grinder Accessories

Attachments for an angle grinder greatly expand its functionality, they can be installed on impellers of any size. With the help of simple devices, you can make a cutting unit or a machine for cutting grooves (grooves in concrete), which will ensure the quality of work at the highest level. The need to purchase an expensive professional tool disappears, since a good job can be done with homemade improvised means.

Manufacturers

The most common and popular attachments are cut-off wheels. Good discs for metal are produced by Makita and Bosch. The best diamond bits are produced by Hitachi (Japan). such discs are universal and can successfully cut any material.

Grinding attachments from the American DeWalt company are appreciated. They differ in the material from which they are made, can be: from a sponge, matter, felt.

For working with stone and metal, special peeling nozzles are used. The highest quality of them are the products of the companies DWT (Switzerland) and Interskol (Russia). The products of the latter company stand out for their combination of price and quality. The named companies also produce good roughing discs, which are diamond-coated.

In addition, DWT manufactures high quality angle grinder attachments called roller cutters. They are used to remove old paint, cement, primer.

Fiolent produces a variety of very good quality turbine nozzles. for nozzles from this manufacturer are low. “Fiolent” appeared on the market relatively recently, but has already managed to gain a good reputation and authority.

The Bort company from China also makes good angle grinder attachments. As you know, the products of Chinese manufacturers traditionally have a low price.

How to do it yourself?

Before doing, for example, any machine using an angle grinder (the device is quite simple), it is recommended that you familiarize yourself with the schematic drawings that can be found on the Internet or in special literature. They will help you better understand the principle of the angle grinder themselves, as well as how the various attachments that may be required are made. The nodes will have to be selected empirically, focusing on the actual dimensions that are available for this particular turbine model. Such a unit can be ideal for cutting and facing various workpieces.

There are dozens of different attachments, which can be of very different sizes, so the parameters of the working elements should be selected when this particular model is in front of your eyes.

How to choose?

The key used during work must provide a quick and reliable clamping of the disk, therefore the tool is made of high strength steel, only under this condition it will work for a long time.

When choosing a key, it is recommended to pay attention to:

  • the presence of a soft start function (prevention of jerks during start-up);
  • the ability to block the brushes in case of voltage surges;
  • option for automatic spindle balancing (reduction of runout during use);
  • the ability to hold the start button, this is a very useful function for long-term operation.

Some craftsmen prefer to use a universal wrench to work with an angle grinder. This device can tighten and loosen the threaded flanges not only on an angle grinder, but also on a wall chaser, and even on a circular saw.

The main part of the key is made of tool steel. It is very good if the handle has a polymer coating. The universal device has a movable working part, the dimensions are adjusted very smoothly. Their range can vary over a fairly wide range.

And a few more recommendations for choosing.

  • It is undesirable to purchase a mechanism even with a weak backlash.
  • The diameter of the nuts (in millimeters) that the factory key can unscrew is indicated after the letters “КР”.
  • Before buying, it is worth checking the tool in your hand. does it slip.

You will learn how to make a universal wrench for an angle grinder in the video below.

  • Samodelkin September 3, 2016
  • DIY garage tools

Today we will show you how to make a homemade disc puller for an angle grinder.

Its main advantage over other pullers is that it is very sturdy and has 3 (4) legs with which it can easily remove any disc from an angle grinder.

It takes little time and effort to do it.

How to make a wrench for an angle grinder

Modern angle grinders (angle grinders) are equipped with a variety of attachments. The designers are trying to ensure in this way the successful application of their developments for grinding, cutting and polishing dissimilar materials. But the nozzles are not changed manually, but with the use of special devices.

We will talk about the features of choosing keys for an angle grinder in our article.

Application features

The use of an angle grinder wrench is most often necessary when removing and replacing the disc. And such a need arises mainly due to the appearance of cracks in the disk itself. Before using the key, it is necessary to stop the operation of the equipment and disconnect it from power. Failure to comply with this rule threatens with big trouble.

After de-energizing the device, twist the lock nut with a key. Sometimes it happens that the disc is jammed to the limit, and the standard tool does not help. Then a powerful gas wrench can be used. The rest of the disc can be cut with an ordinary hacksaw for metal; the locking nut after replacing the disc element is returned to its original position.

For this puller we need:

  • The handle for the disc puller can be at your discretion (the main thing is that you can weld it to the base);
  • The base is 2 cm long;
  • Legs whose thickness is 0.5 cm, and a height of 0.8 cm, they can be 3 pieces or 4.

The distance between them is 2 cm.
In order to make it, you will need tools, of course. In the photo everything is described in detail.

Thanks for attention.

Another homemade garage tool. homemade universal wrench for angle grinder and drill.

This device is useful when working with an angle grinder, as well as with a drill, you can make it yourself in half an hour, and the benefits of it are obvious.

We start making homemade products. We take a wrench for 30, mark the center in it and cut out a turnkey opening for a drill.

We insert into the cut groove, the key for the drill and weld it to the wrench.

We cut off the excess from the key on the back.

Then we attach the angle grinder nut to our wrench and drill holes.

We take two bolts, insert them into the key holes and weld.

As a result, we got a rather useful homemade product for a home workshop. a universal wrench for an angle grinder and a drill.

Do-it-yourself wall chaser from an angle grinder

A groove is a groove that must be cut in a wall to lay an electrical wire or cable. The difficulty of this work lies in the fact that the groove must be of constant width and depth. Then the wire will fit evenly and less solution for the bookmark will be required.

A wall chaser is rarely used in practice, so it will be expensive to buy it for a home. But it can be made on the basis of an angle grinder. our favorite angle grinder.

The main task is to install two diamond discs on the shaft of an angle grinder with a distance of at least 1 cm:

  • install the first disk and fix it with a nut;
  • install the second disk and fix it with a nut;
  • measure the resulting distance between the disks;
  • we install protection on the angle grinder;
  • checking the work.

But, if for some reason it is not possible to install two discs on the shaft, the strobe can also be cut using the usual method with one installed disc. You just have to cut a second parallel line.

Work with a wall chaser is carried out indoors. This creates a huge amount of dust. Even a respirator does not save from it. To eliminate this negative phenomenon, it is necessary to make a protective casing that would cover both disks and have a branch pipe on top for connecting to a vacuum cleaner. There is a similar device on electric jigsaws for collecting small sawdust.
Sometimes, lovers of the rational use of the tool adapt 2 or 4 rotating rollers to this casing. When the chaser moves along the wall surface, it will move on rollers without creating additional loads on the hands.

To make a tool for a wide groove, it is necessary to make special bushings for attaching discs to the desired width. With such a wall chaser, it will be possible to make grooves for pipe laying.

READ  How To Remove A Knife And Make A New For Your Lawn Mower

But the protective casing will also need to be made wider. On the cover of the chaser for both wires and pipes, you must install a screw for adjusting the immersion of the cutting tool into the wall. In this case, the casing will consist of two parts connected by a hinge and a submersion adjustment unit.

Angle grinder stand

This device is a small machine with which you can easily, safely and very accurately cut metal pipes, profiles or rods. It consists of a base or a small table attached to the ground or to a locksmith’s table.

The machine is assembled in a simple sequence:

  • we install a hinge on the base;
  • we weld the supporting pipe to the hinge;
  • we attach a U-shaped attachment plate to an angle grinder to the pipe;
  • we put on a rubber handle on the supporting pipe;
  • install the disk and check its position.

As a result of simple work, we got a machine or stand for an angle grinder. The angle grinder can now swivel up and down on the part set for cutting. To lift the angle grinder up without loads, we install a spring on the pipe.

Two fixing corners must be installed on the table. At the base of one corner, we make a groove for the bolt around the circumference. It will be needed when the pipe or profile needs to be cut at a certain angle. Then we install this corner with a slot at the same angle to the plane of the cutting disc. Angle grinder.

Parallel to the corner with the arc slot, we install a corner that can be moved to the part to fix it on the table. The pipe or profile will simply be nested between the two corners. This is enough for a fast and accurate cut.

By installing the supporting transverse metal bar on the machine table, you can clean the material using a steel brush mounted on the shaft of an angle grinder.

Simple cut-off machine

A cut-off machine based on an angle grinder can be made by hand in one day. For the machine, you need to choose a bed. a metal base plate. Fix the hinge on it. Weld the supporting frame with the plate for attaching the angle grinder to the hinge.

Any suitable part can be used as a hinge. In this case, the hinge is made from the swivel hinges of a passenger car. The hinges have already served their time, but they fit the machine very well.

What accessories for an angle grinder can be made by hand

The well-known angle grinder, with its cutting, grinding and cleaning capabilities, proved to be capable of several more functions. Expanding the functionality requires you to do some work with your own hands in order to get the devices you need for work.

  • Circular Saw from Angle Grinder
  • How to repair an angle grinder
  • Do-it-yourself grinder
  • DIY drill stand: drawings

Milling cutter from angle grinder

Sometimes it becomes necessary to mill a hole or surface, but there is no familiar milling machine operator, and there is nowhere to look. But there is an angle grinder. an angle grinder. This is the solution to the problem. We choose a machine from two options. a movable machine and a movable table.

In the first case, we fix the workpiece or material that needs to be milled, and the angle grinder is attached in the vertical plane to the frame. On the frame it is possible to move the plate to which the angle grinder is attached to the left. right and forward. backward. In other words, we can move the angle grinder relative to the workpiece.

In another version, the angle grinder is rigidly fixed, and the workpiece moves by analogy left. right and forward. backward. These are the main directions for milling. For milling along the up and down axes, it will not be difficult to supplement the adaptation.

Having chosen the version of the machine, you can start implementation. The only place that requires a turner is the cutter holder. It is turned from a hexagon of at least 16 mm, because the thread of the angle grinder is 14 mm. Collet type holder. It is easy to manufacture and does not have large beats. Regular jaw chuck does worse.

The advantage of such a machine, like all machines based on an angle grinder, is that they are easily transformed back into an angle grinder. As a type of milling cutter from an angle grinder, you can make a drill.

Pendulum saw

It is not difficult to make adaptations for an angle grinder with your own hands. It doesn’t even need blueprints. It is enough to know the principle that is embedded in this or that machine. The pendulum saw based on the angle grinder is no exception. This is the same cut-off machine, but its weight is distributed almost in half.

It is somewhat similar to a children’s swing. A frame is located on the movable sleeve, and an angle grinder is mounted on it. Any weight in combination with a return spring can serve as a counterweight.

How to make a wrench for an angle grinder

Tools are sometimes lost, especially for small items. So, today we will talk about how to make a wrench for an angle grinder.

  • dense durable material of wood origin;
  • drill;
  • pencil;
  • saw;
  • Sander;
  • two bolts.

As for the material of manufacture, we recommend using thick plywood.

First, drill holes in the workpiece you have prepared. Use an angle grinder to mark out.

Cut off the excess. You need to make a pen. Need a jigsaw.

Round off the product. As you can see, in our case, the master has a large assortment of machines. We assure you that you do not need all of this. A jigsaw and a sander or emery machine will be enough.

Mark places for drilling holes.

Drill them with a slightly smaller diameter drill, then cut the threads. Of course, you can do without cutting, this is not at all necessary.

Screw the bolts in place. If necessary, screw nuts on them if they are too long.

Finish sanding.

As a result, you should get something like this angle grinder wrench.

In principle, everything is easy and simple. Note again that it is best to use plywood.

How to change a disc to an angle grinder without a key?

Use the gas key. Grasp the nut with an adjustable pipe wrench and loosen it carefully, without applying great force. Disadvantage: you can crush the nut, break the rotation lock.

Make a homemade wrench for the angle grinder. To do this, you need a long nail (at least 100 mm). It is necessary to cut off the cap, the point and give the nail a U-shape. It should be bent in such a way that the stands of the “tool” fall into the holes of the flange. If the nut is tightened tightly, insert any metal bar between the posts of the nail and, grasping it with both hands, rotate the structure in the direction of the circle’s movement. At this time, you need to press and hold the spindle lock button. The method is safe, but it takes time and additional tools. a hacksaw, a vice, a hammer.

Tapping with a chisel. Before changing the disc, you can treat the spindle shaft with WD-40 fluid and wait at least 15 minutes. Then put the tip of a thin chisel at an angle to the hole of the flange nut and gently tap on the entire surface of the hole with a metal hammer. Sooner or later, thanks to gentle tapping, the nut will come off, and it will be possible to unscrew it manually. The disadvantage of this method is that you can damage the holes and spoil the flange.

Heat the nut. If it is difficult to unscrew the nut of an angle grinder by hand, you can heat it up a little with a gas burner or autogenous machine. Unscrew the flange with gloves so as not to burn yourself. This is the most risky of the proposed methods. Can overheat bearings and oil in angle grinder gearbox.

Finally, I would like to mention a few important points regarding replacing the disc with an angle grinder.

  • The angle grinder must be fitted with a suitable size disc. It is necessary to strictly observe safety precautions and in no case remove the protective cover in order to put a disc of a larger diameter. When choosing a disc, you need to take into account the model of the power tool, its power, spindle speed.
  • Due to the disc rotating at high speed, work hardening forms on the guard of the angle grinder. Therefore, when changing a disc, remove and clean the casing.
  • Some models of angle grinder have washers to prevent the disc from getting jammed between the flanges. At least the support flange can be fitted with a rubber washer. Instead of factory fasteners, you can cut cardboard, rubber or plastic spacers. 2 gaskets need to be used: between the support flange and the disc, between the disc and the nut.
  • Do not forget: if the circle rotates clockwise, then the nut is also unscrewed clockwise and tightened against.
  • If you don’t want to buy a new wrench, install a Bosch quick-locking nut on the angle grinder. you can easily unscrew it by hand.
READ  How To Make Tracks On A Tiller

The main thing is that when changing the disc to an angle grinder, do not violate safety precautions and perform all manipulations with the tool turned off from the network.

How to change a disc for an angle grinder: 4 unconventional ways

Angle grinder is a universal power tool. It can be used to cut steel profiles and wood, process concrete and stones, perform grinding and roughing work, sharpen hacksaws. And for each operation, a certain circle is provided. For example, a thin angle grinder cannot be used to grind surfaces. it will break quickly. How to properly place a disc on an angle grinder when grinding and breaking a wheel or switching to another type of work?

According to the instruction manual, replacing the disc with an angle grinder should be done as follows.

  • Unplug the power tool cord from the socket.
  • Press the spindle rotation lock button.
  • While holding the lock button on the angle grinder, unscrew the flange nut with an open-end wrench. Turn the angle grinder wrench in the direction of rotation of the disc. If it is difficult to press the button with one hand and use the key with the other, ask someone close to you to help you.
  • Remove the old disc from the spindle shaft.
  • Install a new disk.
  • Fasten it with a nut by hand or using the same universal wrench. At this moment, you need to hold the stopper with the other hand. Do not overtighten the nut.
  • Plug in the angle grinder for 30 seconds at maximum speed. If the disc rotates freely, without beating, without touching the protective casing, you can start working.

An open-end wrench must be included in the scope of delivery of the angle grinder. Cheap angle grinders often go with poor quality wrenches. It can quickly break (however, this also happens with tools from leading manufacturers). In the end, the key can simply be lost. How to properly install a disc on an angle grinder in this case, without having the right tool at hand?

Angle grinder wrench

Universal wrench for angle grinder

Keyless chuck Matrix, 1/2, 2-13 mm

Keyless chuck Spec 3 / 8-24 UNF, 0.8-10 mm

Wow Amaizing New Tool How To Make UNIVERSAL Angle Grinder KEY

Keyless chuck Matrix, М12х1.25, 2-13 mm

Keyless chuck Spec 1 / 2-20 UNF, 2.0-13 mm

Chuck with key and adapter Spec 1.5-13 mm

Universal quick-release wrench for angle grinder

Cartridge Spec 1 / 2-20UNF, 1.5-13 mm

Attachments for angle grinder and angle grinder

This section contains special accessories for the angle grinder. angle grinder wrenches, clamping nuts for angle grinders, support flanges, stands, protective covers, etc.

To protect the operator while working with the angle grinder, it is recommended to use a protective cover that prevents dust and small particles from entering the eyes. The casings differ in the total diameter of the discs for which this or that model of the angle grinder is designed. For those craftsmen who often have to work an angle grinder in different parts of the workshop and move it, it is recommended to purchase a support stand. Thanks to her, it becomes much more convenient to work with a grinder. They also differ in the diameter of the disc angle grinder for which they are suitable.

If you need to change the disc, you can use special wrenches for the angle grinder, their main difference is in the diameter of the accessories for which they are suitable, and the support flange for the grinder and the nut for the clamping angle grinder will help to securely fix the disc. If you need to use a disc with a larger bore than an angle grinder, you will need the grinding wheel adapters to securely hold the disc for further work.

For the processing of surfaces made of hard material. concrete, granite, etc. the section presents other accessories for the angle grinder: diamond end mills of various diameters.

Attachments Reviews for Angle Grinder and Angle Grinder

Power speed regulator

Assembly order

  • An electrical circuit is assembled on a printed circuit board or surface-mounted.
  • The finished regulator is tested using an incandescent light bulb. If everything is working correctly, the light intensity will change in accordance with the turn of the knob.
  • The assembled device is mounted directly on the angle grinder.
  • If the angle grinder test is successful, the speed controller is attached and shielded.

Features of installation of the finished block

When buying and installing a factory regulator inside an angle grinder, most often you have to modify the case. cut a hole in it to output the adjusting wheel. However, this can adversely affect the rigidity of the casing. Therefore, it is preferable to install the device outside.

The adjusting wheel changes the speed

The numbers on the adjusting wheel indicate the number of spindle revolutions. The meaning is not absolute, but conditional. “1”. minimum speed, “9”. maximum. The rest of the numbers are for guidance when regulating. The location of the wheel on the body is different. For example, on a Bosch PWS 1300–125 CE, Wortex AG 1213–1 E or Watt WWS-900 angle grinder, it is located at the base of the handle. In other models, such as Makita 9565 CVL, the adjusting wheel is located at the end of the casing.

make, angle, grinder

The connection diagram of the regulator to the angle grinder is not complicated, but sometimes it is not so easy to pull the cables to the button, which is located on the other end of the device body. The task can be solved by selecting the optimal wire cross-section or by bringing it to the surface of the casing.

The regulator is connected according to the diagram

A good option is to install the regulator on the surface of the device or fix it to a power cable. Everything does not always work out on the first try, sometimes the device has to be tested, after which some adjustments are made. And this is easier to do when access to its elements is open.

Attachment to the power cord

How to make a speed controller with your own hands

In order not to complicate the perception of the principle of operation in complex terms, the principle operation of the circuit can be explained simply. It has a sensing element that reads the magnitude of the load. Depending on the read value, this element controls the shut-off device.

The principle of operation is similar to that of a water tap. In this case, you are the sensitive element that controls the water tap. The flow of water, depending on the need, becomes more or less. The same process occurs with the current.

It is necessary to correctly understand the moment that we will in no way be able to increase the rotation speed more than that indicated in the characteristics of the angle grinder. We can only lower the turnover. If the maximum rpm is 3000, then the range in which we can adjust the rpm will be below this value.

In its simplest form, you can use a thyristor-based regulator circuit. He will both feel and regulate. Two in one. This diagram has only five parts. It is very compact and fits easily into the case. Such a regulator will not work from zero rpm, but this is not necessary for an angle grinder.

If lower speeds are needed in the work, then it is necessary to use another circuit on an integrated microcircuit, where the triac will be the locking element. Such a scheme will be able to regulate the speed from almost zero to the desired value.

And in that, and in the other scheme, the main load falls on the shut-off element. It must be rated for voltages up to 600 V and for currents up to 12 A. If your grinder is more powerful than 1 kW, then the locking element must withstand a load of up to 20 A.

All the details of the thyristor circuit can be placed on a printed circuit board or simply by surface mounting. According to the second option, the parts are soldered onto the printed circuit board. The printed circuit board can be manufactured in different ways. It can be etched out of foil-clad PCB, you can even cut it with a cutter, but it will turn out very roughly. In principle, she can be asked to make a familiar radio amateur for a very modest remuneration.

When the finished board is ready, you need to choose a convenient place in the angle grinder case to install it. It is desirable to install it so that it is convenient to use, and so that it does not interfere in the process of work.

Before installing the circuit in the car, you need to check it. To do this, instead of an angle grinder, an ordinary incandescent lamp must be connected to the output. A copy with a power of 60. 40 W at 220 V will do. The efficiency will be obvious by changing the glow of the light bulb.

make, angle, grinder

Now it remains to mount the device in the selected place and make a test run of the angle grinder. It will stop breaking out of your hands during start-up, and the speed will be smoothly adjusted by rotating the regulator.

READ  How to Unscrew the Angle Grinder Nut Bitten Disc

Speed ​​controller for angle grinder: how to reduce speed and make a smooth start

How to assemble a regulator circuit with your own hands

The simplest power regulator, suitable for an angle grinder, soldering iron or light bulb, is easy to assemble by hand.

Electronic unit in angle grinder

The electronic unit allows you to combine the speed controller and soft start into one whole. The electronic circuit is implemented according to the principle of pulse-phase control with a gradual increase in the opening phase of the triac. An angle grinder of different power and price category can be supplied with such a block.

If you have an old angle grinder among your tools, take your time to get rid of it. Using a simple wiring diagram, the tool can be improved by adding an option for adjusting the speed. Due to the usual control device, which you can create with your own hands within a few hours, the functions of the tool will significantly expand. By reducing the number of rotations per unit of time, the angle grinder can be used as a sharpening and grinding unit for different types of materials. There will be additional opportunities for using auxiliary equipment and attachments.

Master’s secrets

Attachment for angle grinder

Greetings to all readers and visitors of the site “Secrets of the Master”!
I probably won’t surprise anyone if I say that today the angle grinder is one of the most common tools among masters of different directions.
The correct name for this tool is an angle grinder, popularly. an angle grinder.
In this article, I’ll show you how to whip up an angle grinder attachment.
For work we need a minimum of tools.

  • Drill with a set of drills.
  • angle grinder with metal cutting disc ø 125 mm.
  • Hacksaw for wood.
  • Screwdriver.

Also needs material.

  • Wooden blocks.

270 × 28 × 35 mm. 1 pc. Frame detail.
120 × 60 × 23 mm. 1 pc. Lever.

  • Dural corner.

30 × 30 × 420 mm. 1 pc. Frame reinforcement.

  • Dural plate.

300 × 120 × 2 mm. 1 pc. Fixture base.
You can use a textolite plate at least 3 mm thick.

  • Metal corners.

55 × 30 × 75 mm. 1 piece.
60 × 60 × 45 mm. 1 pc. Angle grinder mount.

  • Screws with nuts and washers М 4 × 15 mm. 2 pcs.
  • Bolt with lock nut М 8 × 20 mm. 1 pc. Angle grinder mount.
  • Self-tapping screws for wood.

3 × 20 mm. 4 pieces.
3 × 35 mm. 2 pieces.
3.5 × 16 mm. 2 pieces.

alteration of interior doors and not only.

Assembly procedure for angle grinders

Preparation of a platform from a duralumin plate.
✓Cut out a plate 300 × 120 mm.

✓ We drill six holes ø4 mm with a recess for the caps of the self-tapping screws. These holes are needed for attaching corners, a bar and a handle.
✓ From a duralumin corner 30 × 30 × 420 mm we make a corner.

To do this, we make a cutout in the form of an equilateral triangle in one of the shelves in order to bend it at a right angle 90º.
✓ Separately we fasten the handle (120 × 60 × 23 mm) with a bar (270 × 28 × 35 mm) using self-tapping screws 3 × 35 mm. 2 pcs.

✓The obtained L-shaped parts and the duralumin plate are assembled together.
Everything is fixed with self-tapping screws 3 × 20 mm. 4 pcs.
The base of the fixture is ready.
Final assembly of the angle grinder attachment
✓ Now you need to install metal corners 55 × 30 × 75 mm. 1 pc.
60 × 60 × 45 mm. 1 pc. on the received platform for attaching the angle grinder.
Note the corner 60 × 60 × 45 mm must be bent slightly from 90º to 60º.

Otherwise, do not fasten the angle grinder.
The angle grinder is attached to the corners on one side with its own handle, and on the other side with a bolt with a lock nut M 8 × 20 mm.

The locknut is necessary so that the bolt does not unscrew during operation.

The handle does not need a locknut, because you hold it with your hand.

That’s it. the angle grinder cutting attachment is ready. I think that many will have a reasonable question: “Why make such a device when there is a hand-held electric circular saw?”
I agree with this statement of the question, but if you use such a saw often, then you can buy it. And when from case to case, it is better to have such a device.
By the way, such a device can be used not only, for example, for shortening doors, but also for working with ceramic tiles or with plastic panels. You just need to change the cutting disc.

That’s it for this article. If you have any questions, please contact through the feedback form (blue button on the left) or through the “Contacts” page.
Sometime later I will write about how you can make a small sawing machine from an electric jigsaw. So subscribe to the site news. it’s free.
You can also read more articles.

All the best! Best regards Filippov Yuri.
To be continued.

Tips for choosing a wrench for an angle grinder

Modern angle grinders (angle grinders) are equipped with a variety of attachments. The designers are trying to ensure in this way the successful application of their developments for grinding, cutting and polishing dissimilar materials. But the nozzles are not changed manually, but with the use of special devices.

We will talk about the features of choosing keys for an angle grinder in our article.

Application features

The use of an angle grinder wrench is most often necessary when removing and replacing the disc. And such a need arises mainly due to the appearance of cracks in the disk itself. Before using the key, it is necessary to stop the operation of the equipment and disconnect it from power. Failure to comply with this rule threatens with big trouble.

After de-energizing the device, twist the lock nut with a key. Sometimes it happens that the disc is jammed to the limit, and the standard tool does not help. Then a powerful gas wrench can be used. The rest of the disc can be cut with an ordinary hacksaw for metal; the locking nut after replacing the disc element is returned to its original position.

How to choose?

The key used during work must provide a quick and reliable clamping of the disk, therefore the tool is made of high strength steel, only under this condition it will work for a long time.

When choosing a key, it is recommended to pay attention to:

  • the presence of a soft start function (prevention of jerks during start-up);
  • the ability to block the brushes in case of voltage surges;
  • option for automatic spindle balancing (reduction of runout during use);
  • the ability to hold the start button, this is a very useful function for long-term operation.

Some craftsmen prefer to use a universal wrench to work with an angle grinder. This device can tighten and loosen the threaded flanges not only on an angle grinder, but also on a wall chaser, and even on a circular saw.

The main part of the key is made of tool steel. It is very good if the handle has a polymer coating. The universal device has a movable working part, the dimensions are adjusted very smoothly. Their range can vary over a fairly wide range.

And a few more recommendations for choosing.

  • It is undesirable to purchase a mechanism even with a weak backlash.
  • The diameter of the nuts (in millimeters) that the factory key can unscrew is indicated after the letters “КР”.
  • Before buying, it is worth checking the tool in your hand. does it slip.

You will learn how to make a universal wrench for an angle grinder in the video below.