How To Make A Grinder From A Drill

How to make a sander out of a regular hair clipper
How to make a sander out of an ordinary hair clipper On the Internet, you can often find the "LIFE HACK" section, which publishes inventions that make life easier

How to make a sander out of a regular hair clipper

how to make a grinder from a drill

On the pages of the Internet, you can often find the section "LIFEHACK", which publishes inventions that simplify human life and everyday life. This section of the Internet does not come from professors of higher sciences, but exclusively from people with a good sense of AL-KO and knowledge of the exact sciences.

One of these inventions was an improvised grinding machine, made from a conventional hair clipper, which for some reason became unusable. Considering the principle of its operation, it is identical to the standard grinder. Thanks to the movement of the handwheel, on which the grinding element is fixed, the machine performs cleaning and polishing of the even surface.

To make such a mini grinder you will need:

  • Hair clipper;
  • Fasteners for connecting parts;
  • Tool (screwdriver, file and wood blade);
  • Adhesive and double-sided tape:

Based on such a small list, you can start assembling your "life hack" by making a small plan for work:

  1. Disassembly and removal of blades;
  2. Preparing the sanding pad;
  3. Connection of the platform with a flywheel;
  4. Preparation of the surface of the site for abrasive;
  5. Trial use of the machine;
  6. Result.

The first thing to do is to remove the unusable clipper blades from the clipper, this will require a screwdriver. By loosening the bolts that connect the two blades, the moving element is released. The bolts that were on the typewriter should not be removed far, in the next stages of work they will be needed.

When the moving element is open, it must be measured and a base for grinding with the same hole must be made.

The next stage is the production of the site itself. Here one should take into account also its purpose. If it will be used exclusively on a flat surface, then its shape can be rectangular or any shape you like. If it will be used for cleaning corners, then it is better to use a narrow or angled platform.

The next step in the manufacture of this device is the connection of the finished envious platform with the motor element of the machine. Do not forget that the grinding platform will be in continuous motion for a certain amount of time, for this it should be qualitatively reinforced on the motor handpiece. For this, you can use either glue or fasteners. Depending on the principle of appointment. If this platform is removable, then it should be secured with bolts or a hairpin, if not, then it can be glued to the flywheel.

Next, you should prepare the surface of this site, to the abrasive element. This can be sandpaper or felt cloth. Having cleaned and degreased the surface of the finished structure, double-sided adhesive tape can be glued to it, which will hold the abrasive material.

Making a grinder from a drill

To turn an ordinary, household electric drill into a grinder, you need to equip it with a special attachment – a working drum or a special support plate, depending on the task.

The backing or sanding pad is a plastic or rubber base with sandpaper glued on and a shank for clamping into a drill chuck. Trays with a flexible shaft are suitable for work with a loose drill, and with a rigid one it is better to use only for a well-fixed drill.

Grinding drums for household drills are structurally a conventional cylinder, a shank and sandpaper glued to the cylinder. When using drums, the working surface of the grinder is parallel to the axis of rotation.

We make a grinder from an angle grinder

Many might say that an "angle grinder" is an angle grinder, but there are some subtleties hidden here. It should be borne in mind that the angle grinder has very high revs and is often quite a decent weight. To polish the surface of an angle grinder, you must have considerable experience in this matter and use special polishing discs and wheels. The sander has a much lower engine speed and weight. To work with a factory grinder, no specific experience and skill are required.

It is possible to independently make a good grinding machine out of an angle grinder, which is not inferior in its parameters to a factory machine, only by improving its electrical circuit, by mounting the regulator at lower speeds and by using special grinding nozzles.

How to make a sander

When work with a wooden surface comes to an end, the stage of finishing sanding begins. To perform grinding without burrs, scratches, and nicely round off sharp corners of any part, you need to use a wood sander. This tool will help to perform professional grinding, even a beginner who first took the device in hand. If you wish, you can make a grinding machine yourself, using only available tools.

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Homemade belt sander

Do-it-yourself wood sander

Grinding machines are represented by the following types:

  • Eccentric or orbital;
  • Vibrating;
  • Corner;
  • Tape.

When making a typewriter, you will need:

  • Electric motor;
  • Power supply.

The power unit must be taken from household appliances, for example, from a fan, power supply – computer, battery – household. As a basis for the above elements, a wooden board is suitable, on which the battery with an electric motor should be fixed with screws. The "start" button must be attached to the base with self-tapping screws. Wire strands are fixed with industrial staples.
The working part of the tool is a grinding wheel, which you can purchase yourself. The abrasive disc will be driven by an electric motor using two bushings.
You can strengthen the design of the device if you take the motor from the washing machine as the engine. In addition to polishing discs, in this case, grinding and abrasives can be installed on the tool.

How to make a sander

You can make a simple typewriter from your PC’s hard drive. To do this, you need the hard drive itself, an abrasive, a PC power supply. It will be designed to work with small details. When disassembling the disc, glue the abrasive onto the rotating surface. After that, the structure must be connected to a power supply unit (power supply), and then the entire structure must be fixed on the working plane of the table, equipped with a speed controller and a switch.

Smooth start and speed control

Smooth start-up of power tools is the main guarantee of its longevity. Remember when a light bulb burns out? Most often at the moment of switching on. Because after connecting to the electrical network, the load increases sharply. The worn-out places of the spiral do not stand up and it burns out.

The same processes take place in the angle grinder. At the moment of switching on, the current rises sharply, because the driving forces need not only to move the armature, but also quickly gain the necessary speed. The effect of such a hard start can be the most deplorable – a winding break.

To reduce the likelihood of tool failure due to hard starting, it is necessary to modify the angle grinder and equip it with a small built-in soft starter.

Another improvement is the rotation regulator. Everyone knows from their own practice how inconvenient it is to work with a tool that does not have a rotation adjustment. If there is no such device in an electric drill, then it is difficult to choose the rotation speed and drill feed. This will either cause the drill to jam or break.

The lathe works in a similar way, in which there is a whole set of special gears for adjusting the spindle rotation. This largely affects not only the safety of the cutter, but also the quality of material processing.

Combine two advantages – smooth start-up and shaft speed control using an electronic circuit. It is quite possible to assemble it yourself and install it directly into the machine body. With such a scheme, it will start smoothly without creating overloads in the windings and the network. And with the same scheme, it will be possible to adjust the speed in order to select the mode of operation with any material.

If you cut metal with significant thickness and hardness, then you need to maintain high speed. But when processing surfaces of low-melting materials, high speed will do more harm than help the cause. It needs to be reduced. It is dangerous to work with stones or tiles at high speed. And here it must be slowed down.

Even when grinding the disc, the rotation speed must be proportionally changed, because the linear speed of the disc edge will decrease. You cannot do without a speed regulator when working with a diamond cut disc, because at high temperatures it breaks down very quickly.

Everything suggests that if an angle grinder does not have a speed controller, then it must be made and installed in the machine.

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

The power tool in our workshop occupies one of the main places. Each electrical device performs all functions in accordance with technical data. What else would you like? I really want the tool not to fail for a longer time or not break at all. As a person gets used to a friend – a dog, so he gets used to an instrument.

  • Homemade from angle grinder
  • Circular saw made of angle grinder
  • DIY angle grinder repair:
  • Drill stand for a drill: how to make a holder, bed

One of the basic tools is the angle grinder, which we call the angle grinder. It is a versatile tool that can cut, grind, clean the surface, saw boards and can be adapted to many more operations.

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 amount of load. Depending on the read value, this element controls the shut-off device.

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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 takes place 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 revs are 3000, then the range in which we can adjust the revs will be below this value.

In its simplest form, you can use a thyristor-based regulator circuit. He will 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 a different 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 another scheme, the main load falls on the shut-off element. It should 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 on the printed circuit board. The printed circuit board can be manufactured in different ways. It can be etched out of foil-coated PCB, you can even cut it with a cutter, but it will turn out very rough. 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 case of the angle grinder to install it. It is desirable to install it so that it is convenient to use, and so that it does not interfere with the work process.

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. The efficiency will be obvious by changing the glow of the light bulb.

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.

STEP 1. Disassembling the hard drive

First you need to disassemble the hard drive.

To do this, remove the cover and carefully remove the rocker arm servo and the rocker itself.

To put it simply, everything to the left of the magnetic disks.

STEP 3. Security

To prevent the grinding disc from spinning out, we recommend making a protective shield that can be made from a regular aluminum can.

STEP 2. Sandpaper

Cut a circle with a diameter of 9 cm from sandpaper with a hole in the center for the size of the spindle. Then evenly glue several strips of double-sided piping tape to the resulting circle and place the grinding disc on the pancake.

Of angle grinder

The angle grinder is designed for grinding. It can be said that it is an angle grinder, but there are some subtleties. The tool does an excellent job of tough jobs such as removing old paint, removing corrosion or streaks on metal. For factory models, there are nozzles that allow you to make a more delicate cleaning. This is possible due to the different grit sizes of the emery sheet. Household appliances work only in one mode with revolutions up to 14-15 thousand per minute.

Angle grinder motor is too powerful. You need a lot of experience in polishing an angle grinder, with special polishing discs and wheels. An angle grinder will not work for delicate work, such as polishing a car. One careless movement and there will be a hole in the transport. The grinder has enough power of 300-400W. A do-it-yourself grinder from an angle grinder has a lot of weight in comparison with a factory analog, but you can customize a homemade product for yourself, which will simplify the use of the machine.

For a homemade sander, you can make a nozzle, which will turn the device into a small belt sander. This option does not use a protective cover. If there is no opportunity and desire to create nozzles, you can change the number of revolutions. Self-change will require knowledge of radio engineering. You need to create a voltage regulator. The procedure is as follows:

  • Solder using a printed circuit board;
  • Thyristors are adapted to radiators;
  • Testing is in progress. Connect a light bulb and turn the toggle switch. The light should fade out smoothly;
  • The device is mounted under the tool casing.
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On expensive devices, you can adjust the speed, but they cost from 10,000 rubles.

Do-it-yourself grinder

  • Tape;
  • Surface grinding;
  • Eccentric or orbital.

Sometimes it is more profitable to make a polishing tool with your own hands. It will be cheaper. The cost depends on the craftsman and the materials that can be converted into a stripper. How to make a sander with your own hands?

Making a grinder with your own hands

It is impossible to make a grinding machine with your own hands without knowing the design and types of tools. The most common grinders:

  1. Angle or otherwise angle grinder. Discs are subject to replacement. The surface is sanded with cleaning wheels. The pressure can be adjusted manually;
  2. Tape. Only used on flat surfaces. The work is done with a sanding belt, suitable for woodworking;
  3. Vibration. Used at the stage of finishing flat surfaces;
  4. Delta grinder. Suitable for products with a curved shape.

Less common tools: straight, polishing, eccentric and brush sander. A device made at the factory or by hand does not differ in design. The main elements can be distinguished:

  • Drive unit. Its power regulates the performance of the device. An electric drive is predominantly used, but there are do-it-yourself pneumatic devices. They are powered by a compressor.
  • Reducer. A machine element present on an angle grinder or drill. The basic part is the spindle. It transmits torque to the tool. There are also models that do not have a gearbox.
  • Working platform. Tapes, discs or circles are used under it. Serves for fastening abrasive materials.
  • Housing. The function of this element is protection against damage and dust. Factory devices have dust collection systems. When made by hand, the material is not able to compete with the factory counterpart, since the quality is better on the factory model.
  • Control system. Regulates the speed and power of the device.

Grinding machines

First of all, it should be noted that grinding machines are professional and household, which model is most suitable for performing the task you need, we will consider in detail in this article.

Professional models of grinders are designed for continuous continuous work. The reliability and quality of components, electronics, materials used in the manufacture of professional models is much higher than that of grinders intended for domestic use. To a tool of this class, high operating requirements are imposed, because it is designed for intensive, multi-shift work.

As a rule, professional grinders have great power and large dimensions. When developing them, many requirements are taken into account, not only the maximum productivity, but also other parameters that will ensure convenient operation, for example, minimal vibration.

Household grinders are designed for casual use. They are calculated, on average, for a total of twenty hours of work per month. Household grinders tend to have fewer functions, lighter weight and less productivity than professional grinders. Every ten to fifteen minutes of operation, a household grinder requires the same rest.

The advantage of household grinders is a significantly lower price and, in addition, they are lighter and more compact, which greatly facilitates their transportation. Therefore, if the purpose of purchasing this power tool. Work at home, in the country or in the garage, it is recommended not to spend extra money on a professional sander.

Angle grinders, which are popularly known as "angle grinders". Are perhaps the most versatile tool. The term "angle grinder" appeared in the USSR in the seventies, when the first models of angle grinders produced in Bulgaria appeared. Angle grinders, in addition to polishing and grinding the surface, can be used for processing and cutting metal.

Belt sanders are mainly designed for rough sanding of flat surfaces. They are widely used when processing large areas of flat surfaces. When it is required to remove a thick layer of material or sand the putty surface. Often belt sanders are used in machine repairs.

Vibratory grinders have a soft rectangular sole that reciprocates at high speed and low amplitude. Designed mainly for finishing and polishing flat surfaces. With the help of vibrating grinders, plastic, metal, wood, stone, composite materials are processed.

The eccentric sander is a kind of specialist for curved and contoured surfaces. They are used for grinding, cleaning, polishing metal, mineral and wood surfaces, including fine grinding. The main difference between eccentric sanders and vibrating sanders is the presence of an eccentric. The eccentric allows the sole of the grinder to perform both reciprocating and circular movements at the same time. This difference provides another direction for surface sanding and significantly increases the performance of the sander.

When working with grinders, it is recommended to use protective goggles and a respirator mask, because a large amount of fine dust is generated during grinding work.