How to make an electric screwdriver with their own hands. Where to start the work

How to make a mini drill with their own hands?

When solving various household and hobby radio tasks it is often convenient to use a mini drill. Such a device allows you to significantly save time on drilling holes with an awl or other improvised means, with much less risk of breaking any part. And the result of the work is incommensurably better. with a flat surface of cylindrical shape. The main stumbling block in the work of such a device is the high cost of a quality model, so many are wondering how to make a mini drill with their own hands.

All homemade mini-drills that you can make yourself can be divided into electric (driven by an electric motor) and manual mini-drills (manually rotated). The first option has significant advantages due to autonomous operation, but at the same time, you need both the engine and the power source for it. The second version of the mini drill requires neither power nor an electric motor, so it is much easier to make if you have all the necessary materials. Having chosen which type suits you best, you can move on to making it.

Ways to solve the problem

Such a tool as an electric screwdriver, although it is the most popular, but still not every home handyman uses it daily. With each passing day, the battery is subject to spontaneous discharge, resulting in the destruction of the internal structure of the product.

After the battery does not hold a few minutes, the question arises what to do now with an electric screwdriver? It is possible to buy a new battery, but first it is necessary to find it, because only authorized dealers can offer exactly the same design of the power element. The second option is to throw away the electric screwdriver and buy a new one, (it is a medium quality product). The third option is the easiest, but at the same time, it requires an effort. to convert the product to AC power.

The advantages of the latter option are the following factors:

• No need to constantly recharge the battery, which is very stressful during the work process;
• Now the electric screwdriver can be stored as long as you want, without thinking about the fact that the battery spontaneously discharges with each passing day;
• Constant torque, which will provide the voltage from the mains.

Among all the advantages will remain only one disadvantage, which is due to the need to connect the device to the socket, so the product must be tethered to the power grid during work.

Why you need a conversion

The main reason for converting a portable cordless electric screwdriver into a corded tool is that the life of the mechanical part of the power tool is much higher than the life of the battery. When the battery (or a set of batteries) finally break down, the electric screwdriver may work for a long time, but it is difficult to buy new batteries for various reasons. For example, such a model is no longer available, and it is impossible to find a battery of the same form factor. there is no unified installation standard for different manufacturers. Also, the batteries can get lost, fail prematurely due to careless handling, etc.д.

If the batteries are still functional, but they do not hold a charge very well, the work turns into excruciating. And sometimes in stationary conditions it is more convenient to connect the tool to the mains than to spend time charging the battery. In all these cases, the life of an electric screwdriver can be extended by converting it to 220 V. You can do it with your own hands.

DEKO electric screwdriver with 20 volt lithium battery

Drill cutter construction

Drill is not the most powerful tool, and therefore at home you can make only a light machine for milling.

In order to process the wood properly, the drill must be firmly fixed to the table top and the workpiece itself: it must not move during the work. If you create a design with the drill on top, you can work quite strong wood and create a complex configuration.

Important! From an electric screwdriver you can make a milling machine of various kinds. on this later in this manual.

Table with router

If conventional grooves or a tongue-and-groove joint is to be milled, it is advisable to use a construction with a protruding work piece (chisel). This is a fairly simple assembly diagram for mounting on a small workbench.

The cover must be turned upside down during work and a hole must be cut there for the tool cutter. About 5 mm larger than the diameter of the cutter to be used. Perpendicularly to the table top you must install a strong bar so that the axis of the spindle coincides with the created hole.

One of the possible shapes of a milling machine

Using stops and clamps, the power tool is attached to the workbench. In working condition, the chuck is located under the cover, and the drill protrudes. As soon as the processing of the wood surface begins, the part will move along the table, while not exceeding a certain zone, which is limited by the template.

Any other method of fastening can be used. it all depends on the tools available and the fantasy of the master. In this situation, the most important thing is that the axis of the cutter used should exactly coincide with the center of the hole.

Important! All parts of the machine must be securely fastened, if there are distortions, the equipment must be reworked.

A simple machine tool

How to make a milling machine from a drill. three basic parts:

All this is made of plywood. Parts must be perpendicular. Under the sole it is required to make a hole through which the cutter will exit.

The stand should be as wide as the body of the electric drill and about 20mm longer. On it fix the drill with clamps (just above the chuck). It is desirable to use an additional stop for a more secure fixation. In this way, the back side of the body on the back of the spindle will be securely fastened.

The braid is needed to increase the rigidity of the machine. It adheres one part to the sole, the other to the stand.

The sole is the base of the design. To make it, you must first make a drawing: draw (or print on a printer) a square, where the sides must be equal to the body of the electric drill. Next, add one strip each (on the two adjacent sides) that is equal to the thickness of the plywood. On the sole mark the center, to subsequently make a hole there with a drill.

The sole is cut along the contour. It is desirable to round the corners, so as not to hit them during work. On the reverse side you need to make a 4 mm hole and a few holes, where the heads of the countersunk screws can go.

Important! A piece of rubber or linoleum is attached to the bottom of the sole to achieve a smooth glide.

If necessary, the stand can also be made of metal The stand is placed in the chosen location and screwed on. The reducer should be placed so that one side of it rests against the base, and the other against the stand. This way the construction is as rigid as possible. It is necessary to fix the position of the drill when it is lowered below the soleplate. A stop and clamp is used for this.

Machine with vertical movement of the cutter

In this case, the sole must be lengthened. A large board with a U-shaped vertical profile (2 pieces) must be screwed to it. These will serve as guides.

The drill will be mounted on one side of the bar and on the other side there will be two rails in a metal profile. At the bottom of the foot you need to screw in a screw, which will act as a stop when you move the body of the used drill down.

The cutter can be placed on the side cylindrical stands. And attach a spring at the bottom, which will return the tool to its original position. For fixation use metal corners, self-tapping screws or staples. The depth of milling can be changed with the help of screw stops.

How to make a simple and powerful electric screwdriver

Good day all dear friends! In today’s article I would like to show you a rather interesting idea of self-made. In this article we will consider how to make a simple and powerful electric screwdriver, the power and reliability of which will exceed the majority of budget analogues. This electric screwdriver we compare to budget screwdrivers because its cost will be extremely small. And since this homemade product consists of the simplest and most accessible materials, for sure you will have something on hand and you will not have to buy anything, and thereby reduce the cost of the assembly. This handy thing is perfect for those who need this tool, but do not have money for a normal tool, but to spend money on a Chinese trinket. In general, this is a very interesting thing, so let’s not procrastinate with a long preface!

For this craft we will need:- Rechargeable batteries 18650 3 pcs.- An electric motor with a 550 grade metal gear motor- A power connector- A chuck for a power drill-electric screwdriver- A on/off switch- A button that closes the circuit when you press it.- Some kind of plastic case for the batteries (like a box for flash drives, etc.).п.)- Electric screwdriver bit set- Wires- Plywood.- Metal plate.- Screw and nut. Metal washers. Self-tapping screws

The tools we will also need:- A drill and a set of drills- A marker- Wood glue (PVA)- A jigsaw or a regular hand.- File- Paint (not necessary)-pliers- box cutter- screwdriver- soldering iron and solder- electrical tape or heat shrink

First we need to make a handle for our handiwork, to do this we need to find a stencil on the Internet or draw it by ourselves. Next, the cut out stencil should be attached to the sheet of plywood taken by you and a marker to the contour, to repeat these steps we have to 3-4 times. The number of these elements depends on the thickness of plywood you choose and on how thick you want to hold the handle.

The next step is to cut out our just-drawn blanks. Cut out with the jigsaw, it will be as accurate and fast as possible. But if you do not have an electric jigsaw, you can also do the usual manual one. After all blanks are cut out, they should be glued together into a sandwich. We will glue it with ordinary PVA glue, because it is available and wood glues well. We apply glue to the workpieces over their entire area and put the glued workpiece under the press (at least by pressing a couple of books) for a day.

Then for better grip and convenient work with device we make rounding of sharp edges of future handle. We will round the edges with the help of a file.

Let’s continue to work with the handle. And at this stage we have to make a couple of holes. One through hole in the upper part (see “The button”). (see photo) it will serve as a mounting hole for the engine. And also it is necessary to make a hole in the face of the upper part (for the button), at first it is necessary to make through hole with a thin drill, and then to enlarge it with wider drill for installation of the button itself. And in the end it is necessary to treat, any protective compositions of the handle, for this you can use stain, varnish, paint, but the author of this self-made project took what was at his hand, namely silver lacquer and covered her handle.

Then the next step is to attach the power part of the construction, namely the electric motor with a gearbox to our newly made handle. For this you need to take a small metal plate from which you should cut a strip the length of which should be about the diameter of the electric motor. After cutting the plate, make a couple of through holes on its edges. The diameter of the through holes you just made should be slightly larger than the diameter of the screw you took. Then we bend the plate so that it takes the shape of the motor. After that put the plate on the motor, put them on the handle so that the holes on the plate coincide with the hole on the handle. We insert and tighten the nut, but for a stronger clamping it is necessary to use metal washers.

After that we put the chuck on the motor gearbox shaft. Such a chuck can be easily found in Chinese online stores for relatively small money.

Then we proceed to assembling the electronic stuffing. For the beginning let’s take some not large plastic container (plastic because plastic is quite easy to work with). On the container taken a small number of holes should be made to install the switch and the lead wire (see. the photo below).

Now let’s deal with the switch. Two jumpers should be soldered to the switch. One of the jumpers should connect the lower left-hand contact with the upper right-hand contact, and the other one vice versa. Then let’s solder the wires to the middle and bottom pins. photo). Let us install the switch in the case in its mounting place. Then let us install the power plug in its mounting place. Then by means of a pair of self-tapping screws we screw the plastic case to our wooden handle and to secure the connection not to let the self-tapping screws through the plastic you should use the washers.

Then let’s take the button and put it in its place on the wooden crank, putting the wire through it. One of the wires coming from the button, we should solder to one of the contacts on the motor. And to the second contact of the electric motor should be soldered a small wire, which in place of the second wire, coming from the button, should be put through a hole in the plastic casing, which was made before. After that, connect all the wires. Connect the red and black wire to the power connector, according to polarity, and connect the two wires from the motor and the button to the wires that come from the central contacts of the switch.

Instructions for rewiring

Let’s take a closer look, step by step, at how you can convert a cordless electric screwdriver to a corded tool.

Disassemble the battery

In order to convert the tool to a corded tool that receives voltage from the native charger or computer power supply, you need to follow simple steps.

First disassemble the old battery pack. Unscrewing the fastening screws. It is important to keep all the terminals.

Remove the innards

Remove the battery and carefully loosen the terminals. Then a wire with a cross section that can handle the operating current is soldered to these terminals. The wire must be at least 2.5 mm² and as long as is necessary for comfortable operation of the electric screwdriver. Now remember which color wire you solder the minus and plus terminals to.

Connect the wires

Disassembling the computer power supply case. Remove the board and unsolder the wires on the power supply stub. Instead of the yellow and black wire, solder the battery terminals to the wires coming out of the power pack. Black wire is the minus terminal, and yellow is the plus terminal.

You can increase the power that the power supply produces by connecting the black wire to the black wire and the yellow wire to the yellow wire. This will improve the performance of the electric screwdriver because there is less loss.

To start the computer power supply, short the green wire from the 20-pin connector to the black wire. This can be done directly on the power supply board. For convenience, you can connect a switch to the green and the free black wire.

For ease of use you can solder a special connector to the wires, allowing them to disconnect. The polarity must be observed, otherwise the electric screwdriver could be damaged. To do this, the connector must be keyed (a special tab on the housing, not allowing you to connect it incorrectly).

Put everything back together and connect the electric screwdriver to 220V

It is necessary to assemble a “modified” battery. Insert the terminals with wires and lead them out through the drilled hole. Inside the body of the former battery is recommended to put a capacitor of 10000 uF capacity at 16 V or 25 V and connect it to the terminals in parallel. Choose a capacitor with a voltage of 1.5 or 2 times the nominal voltage of the tool.

This capacitor will compensate for the high inrush current. If it is not put, the probability of power supply tripping by the built-in protection increases significantly. It is also recommended that a weight be placed inside the tool to ensure balance. This will reduce the strain on the hand while working.

Important! Be sure to secure all wires properly before assembly to prevent them from coming loose.

Assemble the computer power supply together and connect the electric screwdriver to the 220 V mains. If you inspect the tool and find that it lacks power, you can replace the low-voltage wire.

Safety precautions

The place to work when modifying the device should be sufficiently lit. Daylight or LED lamps are most effective with daylight shining in from the window to the left. Avoid glare or direct light in the eyes.

To avoid electric shock it is better to avoid contact with grounded objects, such as radiators, gas stoves. Work table, chair, floor must not have any conductive surfaces.

When working with radio components need to check them for absence of voltage, for this purpose is suitable indicator screwdriver. After disconnecting the power supply it is necessary to remove the charge from the capacitors of the circuits. Remove the charge with a voltmeter, for example.

Connect the equipment only after checking that it is firmly connected. It is better to check not only visually but also mechanically.

Electric socket must be mounted firmly, not dangling, not to have wires pulled out. Sometimes to connect to a network of 220 use an extension cord, it is better to be a surge protector with a fuse and a switch.

What you can make out of an old electric screwdriver with your own hands: battery, motor, motor

At home you can turn an old electric screwdriver into a household appliance or appliance for various purposes. For this you will need a little imagination and additional tools. Homemade devices and tools will cost much less than their factory-made counterparts, and their service life will be several orders of magnitude higher.

angle grinder

In the absence of grinder can be replaced by a self-made angle grinder, made from an old electric screwdriver.

This is done using a nozzle or adapter, equipped with a reducer, which can be purchased in ready-made form. It is also possible to make such devices with your own hands.

Use pins, nuts and washers, the diameter of which is similar to the diameter of the chuck of an electric screwdriver.

After disassembling the tool body and dismantling its gearbox, insert the end of the nozzle or adapter into its chuck in place of the gearbox. Assembling the body of the new tool, the homemade angle grinder is ready for use.

Grass trimmer or lawnmower

Equipment for mowing grass on the site is not cheap. If necessary, it can be made at home using an old electric screwdriver. In addition, it is necessary to prepare these materials:

• Plastic pipe up to 2 m long;
• Fixing elements;
• plug;
• Motor from an electric 12 V electric screwdriver and its battery;
• wire;
• Adapter for the pipe (40-50 mm);
• button;
• Plastic bucket;
• crocodiles (clips);
• office knife blade.

The working process to create a grass trimmer or lawnmower consists of several steps. To get the desired result, it is necessary to observe their sequence:

• Disassemble the case of an electric screwdriver, removing its motor.
• Mark the places on the plug for fastening and drill them with a drill.
• Fix the motor to the plug by screwing it down with 2 to 3 screws.
• Solder the motor leads.
• Install on the landing place of the motor. Wires coming from it, spend through a plastic tube.
• Mark the place on the pipe for the triggering button with a marker. Drill a hole.
• Connect the wires to the button. To quickly turn on the device using the battery, you can also solder crocodiles.
• Make a holder for the battery from the adapter.
• Install the storage unit by connecting it to the adapter on the pipe.
• Use the blades of a paper knife to make blades for the future equipment.
• Connect motor shaft and nozzle using a terminal clamp.
• The protective cover can be made from a plastic bucket by connecting it to the lower end of the pipe.

Such a home-made device can be used for mowing young vegetation.

Engraver

For the construction of the drill, both cordless and electric model of the electric screwdriver will work equally well. To remake it, it is enough to buy a special adapter and make a bit with a diameter that fits the adapter.

Using a self-made chuck gives the possibility to use different tools for the engraver’s work.

Garden shredder

On the basis of an electric screwdriver you can make a shredder of garden branches (with a diameter not exceeding 1 cm) or grass. The power of an electric screwdriver must not exceed 0.5 kW.

It is advisable to follow this sequence of operations when working:

• Prepare a container with grass or branches to be shredded. This can be a bucket or a large bucket.
• In the central part of the bottom of the container bore a hole, in which the shaft will be inserted for fixation of the cutting elements of the chopper.
• To install the shredder and work comfortably, it can be placed on the edge of a table or a frame made of wooden slats can be made for it.
• Install the cutting elements on the shaft, attaching them with bolts. Hacksaw blades set with the sharpened point downward are better suited for this purpose.
• In the lower part of the frame install the electric screwdriver with mounted knives.
• Solder a button to turn the machine on.
• Cut a hole in the lower part of the vessel wall (10×20 cm). Insert a metal or plastic sleeve through which you will drain the shredded material.

The device is ready to work. To ensure efficient operation, it is recommended that the branches be broken into small pieces beforehand.

Hand router from an electric screwdriver

To convert an electric screwdriver into a hand router, you will need a sheet of plywood or particle board, a clamp, fasteners and a feather drill (drill bit) for woodworking. To fix the future cutter with a clamp, a stand and a stop are made of plywood. Their dimensions depend on the dimensions of the electric screwdriver.

Using a drill in the central part of the stand drill a hole with a diameter of 40 mm. It will provide access for the cutter’s cutting part to the workpiece to be machined.

On the stand clamp to fix the electric screwdriver. At the same time, a small gap (2-3 mm) must be left between its chuck and the stand. In the chuck to secure the cutter.

Homemade hand router has a small power. Its spindle rotates at low speed. Therefore, the cutter can be used for machining small workpieces.

Circular saw

You can make a circular saw from a nutrunner. To fix the future equipment, a plywood sheet is used, in the central part of which a hole is sawed according to the size of the electric screwdriver. At the top and bottom of the base, the tool is secured with self-tapping screws or clamps.

The cutting element of the saw can be secured with the bolt M10X 50, on which a washer and a rubber washer are put. The cutting part is tightened in the upper and lower part of the bed.

To create the sides of the circular saw, a plywood sheet with dimensions of 11.5×15 cm is used. They are assembled using self-tapping screws. In the central part of the frame a cut is made (27X40 cm) to fit the blade. It is important to fix the sawblade firmly to the frame to prevent play during the sawmill’s operation.