How to make a circular saw from a drill with your own hands + video and instructions

Icer October 11, 2018Specialization: master in the construction of plasterboard structures, finishing work and laying floor coverings. Installation of door and window units, finishing of facades, installation of electrical, plumbing and heating - I can give detailed advice on all types of work.

I can't afford to buy a professional table saw, so I decided to make my own. I built it on the basis of an electric drill using woodworking waste and am ready to tell you about all the stages of its assembly.

Circular saw from a grinder or circular saw

When working with small workpieces, it is enough to get by with a small circular saw. A circular saw is made with your own hands from available power tools; you will need a grinder or a circular saw.

There are many options for stationary use of improvised tools. It is enough to secure the device from the bottom of the table to access the material to the disk. The height is adjustable depending on the workpiece, but for safety reasons should not exceed one third of the size of the saw blade. This installation option is not available for the switch; it is necessary to modify the device for convenient operation.

A fairly common option is to use a frame on guides. The simple design allows you to use the tool to work at any angle. It consists of two parallel metal pipes or angles on which the saw is mounted.

A hand-made circular saw makes the work you do faster and more economical. Such a device will be needed during major repairs and other actions related to cutting wood. The simplicity of the design, the possibility of using scrap materials, makes the cost almost zero, and making it yourself allows you to add the necessary functionality for the job.

Factory-made screwdriver attachments

Today, there are factory adapters on the domestic market that can be used to turn a drill into a hand-held circular saw.

Their advantages include:

• Workmanship;
• Compatible with any type of drills and screwdrivers;
• Adjustment of cutting angle vertically and horizontally;
• Ease of use.

Despite the advantages, such adapters have a number of disadvantages. Among them are:

• Limitation on cutting thickness. This is due to the fact that such machines are adapted to a specific disc diameter. Increasing the thickness of the cut is possible only by purchasing a more efficient adapter;
• High cost, which exceeds the price of a home-made device several times;
• Expensive spare parts and their lack of free access.

Required Tools

In order to design a carriage for a circular saw with your own hands and then use it comfortably in a home workshop, first of all, you should prepare a set of materials and tools for its manufacture:

• Stationary circular saw on a sawing table;
• A screwdriver or drill, as well as a hand router;
• Assembly adhesive – epoxy resin is suitable;
• Hacksaw or grinder - you may need to saw off protruding parts of the structure;
• Self-tapping screws to secure parts of the product;
• Metal nuts are smaller in diameter than the thickness of the profile hole - they will be buried in it for a short time;
• 2 U-shaped corrugated channel pipes made of metal (for example: aluminum);
• Two slats made of plywood or wood - they will serve as guides. In terms of thickness, they should fit freely into the U-hole of the profile;
• Square thin plywood strip for the base;
• Two wooden walls - for the manufacture of thrust walls of the carriage.

Carriage drawings:

Drawing 1

What is a drill circular?

• 04-03-2015
• 45
• 2375

In a home workshop, a situation often arises when you need to cut a piece of wood lengthwise into separate bars. To do this you need a circular saw, which not every craftsman has. You can perform this operation with a handsaw, but it is a very difficult job. It is especially difficult to complete this task when there must be several cuts and the material is very durable. There is no point in purchasing a factory-made circular installation for these purposes. But you can make a small machine for cutting such slats. It will be especially useful for those whose hobby involves modeling.

Image 1. To make a circular saw from a drill, you will need thick plywood or chipboard.

You can make a small circular saw using a conventional drill, which will act as a drive. When the machine is not being used for its intended purpose, its base is put away on a shelf and the drill is used in the usual way.

Table production process

• You need to cut a tabletop of the required size from a sheet of plywood. Markings are applied to the lower area using a metal ruler and pencil. Cut the plywood with a jigsaw, milling the edges if necessary. If the plywood is not laminated, we clean the surface of the table with sandpaper.
• They shift it and make markings from the bottom for attaching a manual circular saw. To do this, remove the disk from the device and place it with the sole in the required place. We make marks on the table top and at the base for fasteners and a hole for the saw blade. Drill holes for the bolts. They will be twisted from above under the tabletop and held in place with nuts at the bottom. Therefore, the holes are countersinked from the edge of the working plane, and the bolt heads are leveled so that they do not protrude.
• If it is planned to cut the material at different angles, the slot for the saw-tooth circle is made in the shape of an inverted trapezoid. For straight sawing, an ordinary groove is made. Before marking the slot and holes for fasteners, you need to apply a saw, adjust the marks and only then cut.
• Draw with a pencil the areas where the stiffening ribs are located. They are made from boards and installed below 8-9 cm from the edge of the tabletop itself. The table legs must be fixed to the ribs. The ribs are secured with self-tapping screws at intervals of 15–25 cm, and in addition they are glued with PVA. Self-tapping screws are screwed on top, under the tabletop, the heads are completely recessed. The ribs are fastened together with self-tapping screws.
• The legs are made of timber or boards, their length will be from 100 to 113 cm. The legs diverging downwards will give significant stability. They are fixed with large bolts twisted on the outside and reinforced with nuts on the inside. Timber ties will strengthen the frame.
• In order to adjust the height of the table, nuts are attached at the bottom into which M14 bolts are screwed. Now you can secure the saw from below by passing the drive into the prepared slot.
• We attach an electrical outlet to the table, run an electrical cable from it and set the switch. Power to the outlet will be transferred from the switch. We stretch the cable from it to the nearest source in the workshop. With the support of the construction screed, we fix the ON-OFF key on the body of the circular saw in a recessed state.
• Let's start producing auxiliary stops. For the stop you will need a number 30 square cut aluminum pipe and 2 screws with wing nuts. We saw off a piece of pipe along the length of the tabletop, making holes for screws 3 cm from the edge. 2 clamps are cut out from pieces of plywood. The system is ready.
• To process across the table, we use a plywood sled. We align them with the edges of the table, press them down and move them along the toothed circle. We cut a hole in the passage area of ​​the circle. Small components can be placed directly inside the slide and sawed. Dust will be removed from under the table, but a significant part of it will still fly upward, so it is good to supplement the device with an upper dust extractor.

Working with a circular saw is very dangerous, for this reason it is necessary to take care of protecting your fingers. Cut a pusher from a piece of wood or furniture board.

Additions to the completed design

Some craftsmen, when assembling a table for a hand-held circular saw according to unique drawings, completely remove the factory safety cover and replace the factory platform with a homemade one. If cutting at an angle is not planned, you can remove all devices for adjusting the tilt of the disk. The electric saw is fixed directly to the new base, which makes it possible to gain a couple of millimeters of cutting depth.

Without an internal casing, it is easier to remove the blade; the electric saw will not become clogged with shavings when working with wet boards. Dismantling will require extra time, but the service life of the motor is preserved and overload is prevented.

Mounting a circular saw

The matter remains small. The circular electric saw is located inside the prepared hole. The sole is secured with bolts, and the gear drive must fit freely into the socket.

The table for the circular saw is almost ready. Now it needs to be treated with a moisture-protecting material, then coated with varnish in several layers (to minimize slipping).

The resulting system can be supplemented with anything at the user’s discretion (safety cover, device for adjusting the tilt of the disk, carriage, etc.).

How to ensure safety and emergency stop

The standard switch on the tool is inconvenient to use when the saw is under the table. You can move it to an accessible place by soldering longer wires. But more often they go the other way. The keys on the circular are fixed with a tie, and a simple button for a single-phase motor is installed on the stiffening rib. The network is connected to it at the input, and the instrument at the output. To avoid cutting off the cord plug, install a socket. Now the circular machine is controlled by a button and stops quickly if necessary.

Common causes of injury:

1. Cluttered workplace, unstable structure. There should be nothing unnecessary on the table; the slightest loosening should be eliminated.
2. It is forbidden to take workpieces with your hands near the disk. When working with small parts, it is convenient to hold them with a piece of wood.
3. You cannot use a circular saw without a protective shield. Additionally, glasses are required to prevent any flying twigs or chips from getting into your eyes.

Making a table for a manual circular saw is not a difficult task, but requires care. The dimensions must be strictly adhered to so that the parts fit securely, otherwise there is a risk of loosening, which is difficult to eliminate. It is especially important that all legs be the same length to ensure the product is stable.

Stationary machine

If a master dreams of taking up woodworking seriously, then he has only one way - making a full-fledged circular installation. Creating such a unit will take more effort and time, but during its operation it will recoup all costs. The only requirement is a well-thought-out drawing, so it is better to use ready-made diagrams that can be slightly “adjusted” to your conditions.

bed

This is the basis for any machine - the frame on which all the main structural elements are attached. It must be stable and reliable, so there is only one optimal material - unsurpassed metal. The best options are a thick-walled corner or the same profile pipe. Welding is usually used to fasten parts of a stationary machine. If a dismountable structure is planned, then it is possible to use a bolted connection, but in this case it will be difficult to call the fastening “strong”: it will require constant checking.

Tabletop

And here metal is also a favorite. The best materials would be steel or aluminum alloys. A possible option is thick plywood, which is covered with sheet iron. An ideal tabletop for any woodworking machine must have a smooth surface, be able to resist friction, and easily support weights of up to 50-60 kg, without the slightest hint of deflection.

A hole is made in it for the disk. There are two options that are used in the case of a circular saw:

• the cut is made in a single sheet;
• The tabletop is assembled from two canvases.

The second method is preferable for a metal tabletop, since cutting a groove at home is a rather complicated operation. A parallel stop is attached to the tabletop. A convenient metal corner is often used in this role. A hole is also made to attach it. An alternative is reliable and powerful clamps.

Motor

The choice of engine for a future circular saw depends on what kind of lumber they plan to process. If disks with a diameter of 150-170 mm are used, then a unit with a power of 0.5 kW will be sufficient for them. For larger disks (from 350 mm), a more serious engine is suitable - at least 1.1 kW.

If the circular saw is located outdoors (for example, on the street under a canopy), then you can even use a gasoline engine with low power. It is possible to make it removable.

Rotation transmission

The best drive for a circular saw is a V-belt drive. In this case, 2 pulleys are used: the first on the engine, the second on the drive shaft. The reasons for this choice are safety and convenience: in the event of a minor emergency, the belt will simply slip, notifying the technician about the need to turn off the device.

Pulleys that have different annular grooves (grooves) or diameters make it easier to regulate the disk speed, which allows you to find the optimal mode for processing different types of wood. The shaft to which rotation is transmitted from the rotor is almost impossible to make with your own hands, so this part has to be purchased or ordered from a turner. The bearings used to install the shaft must be sealed, otherwise their service life will be short.

Pendulum suspension

Anyone who is not a stranger to working with metal will be able to make a circular machine that has a special feature - a pendulum engine mount. Its convenience lies in the fact that the shaft, motor and cutting disc are located in one common frame.

One side of it is attached with a hinge to the frame, the other is held in place by a screw, which can be adjusted if you need to change the height of the disk exit. The advantage of this system is the ability to use discs of different sizes and ease of adjustment of the cutting height.

A simple DIY circular saw can be made from various tools, but the best option is a stationary model equipped with a powerful motor. On the other hand, the choice of model depends entirely on the craftsman, on the planned “favorite” blanks and the volume of work.

You can get a closer look at the process itself by watching this fascinating video:

Step-by-step instructions for assembling a table for a circular saw

1. Manufacturing of the body. Sheet material for the body is cut to size: 400 mm by 800 mm. The parts are fastened using self-tapping screws and bars. It is better to carry out the assembly by first drilling out the external parts of the box. The result is a rectangular box without a bottom or lid. The upper part of the bars is subsequently used to secure the plywood sheet.

2. Preparing and securing the plywood top. Hole slot. First, a piece 800 mm by 80 mm is cut out of a sheet of plywood. Next, measurements are taken of the support shoe of the saw that will be mounted on the tabletop. Markings are made on the back side of the plywood. 2 central axles will be required. Without them, it is impossible to make accurate markings. Then marks are applied to the plywood corresponding to the dimensions of the support shoe. Then they take the measurements that the circular has: the diameter of the lower protective casing, its thickness, the maximum distance from the edges of the support shoe. In accordance with the obtained dimensions, place marks and cut out a rectangular hole using a jigsaw.

3. Attaching the saw to the plywood table top. First, 4 holes are made in the shoe. Diameter - 10 mm. Next, install the tool so that the working part fits into the cut hole. When the saw is level, you need to mark the location of the holes. Marks are made in the central part. In order for the tool to stand securely, you will need plowshare bolts with a countersunk conical head (M8) for fastening. To install them, you will have to take care of the high-quality recess of the cap; it can protrude by a maximum of 1 mm when not tightened.

The plywood is drilled from the outside, the diameter of the resulting holes should be 8 mm, and then a countersink should be made for the head. When the holes are ready, the saw itself is installed on the cutting table for the circular saw, the bolts are tightened from the inside using nuts with plastic locks or spring washers.

4. Fastening the tabletop to the body. Start button. First, holes are made at a distance of 30 mm in the corners of the plywood table top. Then a hole is drilled in the central part of the bars. The parts are connected using an M8 18 mm steel fitting. The usual “Start-Start” button is installed on the side. An electrical network is laid inside the case, and the button on the instrument itself is pressed.

5. Making a thrust beam. A simple table for a circular saw will become much more convenient if you equip it with a stop beam. The drawings contain all the necessary dimensions. The beam can be made from plywood and secured using full extension furniture rails. The resulting beam should slide above the surface at an angle of 90° to the cutting plane with a slight gap.

6. Stop for longitudinal cuts. It is made from aluminum cornice. 150 mm from the edges, first drill holes for the bolts, and then draw 2 lines from the place where the bolts are attached to the center line. At the intersection and further towards the bolts, 12 mm holes are made at a distance of 30 mm. The bolts from below are tightened with nuts. And along the drawn lines they make slits in the tonic; their width can be seen in the photo.

• Serious tool
• Assembly of a stationary structure
• Make other options
• Desktop instrument

- a necessary and useful tool in the arsenal of a home craftsman. It is especially necessary for those who work a lot with wood. To make a circular saw on your own, all you need is a great desire, the necessary tools and the ability to work with metal.

Jigsaw attachment

Now cutting out figures from plywood has become easier and faster. Use a jigsaw attachment. It is easy to use, universal (suitable for almost all models of screwdrivers) and has a long service life, as it is made of durable materials. A thin tip helps to cut even complex shapes from wood.

The attachment will be useful for experienced craftsmen, carpenters, and artisans. Compatible with electric/pneumatic drills. Allows you to cut aluminum/stainless steel sheets up to 2 mm thick.

Jigsaw for cutting shapes from plywood and thin sheets of metal

Tips for making and using the tool

To ensure the circular machine works properly, follow the recommendations:

Options for power tools based on an electric drill.

1. Based on a drill, you can build a multifunctional home circular machine that can perform the functions of a lathe, cutting machine, grinder, sharpener and circular saw.
2. On the machine, you can select grooves in workpieces if the saw blade is replaced with a flat cutter.
3. A mini-circular saw can be used as a cutting machine in the manufacture of frames.
4. It is advisable to make the desktop metal. If it is wooden, you need to cover it with a sheet of metal.
5. The saw blade should extend above the table by a maximum of one third of its diameter.
6. To make a side stop, it is better to use pieces of steel angle 60x80 mm.
7. It is recommended to use self-aligning ball bearings.

It is capable of processing wooden, plastic, hardboard blanks, cutting them into thin plates and strips. It can be used to polish small items, sharpen drills and cutting tools, and mill grooves. It can be used with great success in workshops of schools and creative houses. To make it you need several pieces of chipboard, a piece of sheet metal, bolts and nuts.

Safety precautions at work

The presence of electrical components and a rapidly rotating saw blade makes a circular saw a highly dangerous tool. Therefore, when working on it, you must follow the following safety rules:

• Use protective clothing and glasses to protect your eyes;
• Start cutting workpieces only after the saw blade has reached its maximum rotation speed;
• It is necessary to work on the machine cyclically. After 15 minutes of continuous operation, allow the tool to cool for the same period of time;
• Install the saw blade only in the direction of rotation of the drill spindle. To do this, there is an arrow on the side of the disk indicating the direction of rotation.

Other homemade machines

Many users are interested in what else can be done using improvised tools from a drill with their own hands? There are many answers - home craftsmen are already making various homemade products from drills in garage workshops. A drill is a universal tool, so with a certain skill and imagination you can make anything your heart desires.

1. A sharpener, you just need to buy some emery in the form of a circle and make a special holder in which the drill is attached.
2. Drilling machine - there are special holders for vertical drilling or stand.
3. Small lathe for wood processing.
4. A mini-drill for various needs of the home craftsman.
5. To easily mow the grass around your garden plot, you can make your own trimmer from a drill.
6. A grinder from a drill is made quickly, just buy specific attachments.
7. Garage auto repairmen install original engine replacement winches based on old, very powerful tools.
8. Gardeners make holes for planting young trees using a homemade drill bit.
9. When pouring the foundation for a utility room in the private sector, some users use a homemade vibrator made from a drill to quickly compact the concrete structure.

Original devices

The list of homemade products can be continued endlessly, but we’d rather talk in more detail about some homemade machines that can be made from any model of drill.

Drill

A drill made from a drill is not a fantasy, but a real and fairly universal machine, assembled independently. The main thing is that you need to order from Chinese engineers (if you couldn’t find it in your city) a flexible shaft from a standard medical unit. As a result, a drill appears in your arsenal, which can be used for engraving work or drill holes using special burs in small parts or structures that cannot be reached with a standard drill.

Lathe

A woodworking or lathe for home can easily be made using a drill. The tool must be secured with special clamps quite firmly, and a specially designed holder with several sharp pins must be inserted into the chuck to keep the workpiece from turning. The center of the rear holder (headstock) and the clamp at the front of a homemade lathe should be located on the same axis. Precision is necessary to prevent runout as the workpiece rotates. After installing the part, the tailstock is firmly fixed with a special clamp.

The third element of the machine is a tool rest in the form of a wooden block on which a chisel or other tool for processing the workpiece will rest.

A lathe for processing wooden workpieces will work properly if the drill has a built-in electronic speed controller. Using the trial method, you establish the optimal rotation mode for effective wood processing. Using such a woodworking device, you can make unique products for household needs: for example, a rolling pin or pestle with a mortar, a candlestick or a prefabricated candelabra.

Winch

An original winch based on an old but powerful drill will become an indispensable assistant in the household, especially for those users who live in their own home and have a personal plot. A simple situation: you decided to install a larger container in your summer shower, but raising it to such a height alone is problematic. Using a winch, this can be done in a few minutes. You just need to first calculate the weight of the container and the spindle speed.

According to garage craftsmen, a homemade winch can easily lift the engine from a passenger car. Watch the video if you don't take my word for it:

Experts advise using a homemade device, setting the drill at the lowest speed. This design can move objects with different masses, because craftsmen even make winches based on an ordinary car starter.

Wood lathe

Creating products from wooden blanks is impossible without a woodworking machine. As a working surface of the machine, you can use a workbench made of wood with a flat surface.

According to the dimensions of the tool, make a bed from a lath in which the screwdriver will be located and fixed. A regular clamp is used for fixation. The bed is attached to the base using self-tapping screws or a clamp.

A mandrel with teeth is placed in the screwdriver chuck. To make the tailstock, 2 bars with an adjustment screw, sharpened to the dimensions of the cone, are suitable. The headstock is attached opposite the screwdriver. In this case, its axis should be at the same level with the headstock adjusting screw.

Use a clamp to secure the back stop to the base of the future machine. A simple wood lathe is ready to use.

Kinds

Do not think that mini saws are represented by only one standard model. In fact, you can find many different types of this instrument on sale today. It will be possible to choose the ideal option for any work.

It is worth considering in detail what types of small circulars exist and how they differ from each other.

Manual

This instrument has a rather complex design and structure. As a rule, these types of tools are designed to work with fairly thin and pliable materials.

Using them, it is permissible to perform the following tasks:

• saw wood moving along the grain;
• sawing wood across the grain;
• cut various subtypes of wood (these include materials such as MDF, laminate and chipboard);
• cut metal with a thin and soft structure.

Such instruments have the following characteristic features:

• they have very modest sizes, making them easy to use and move from place to place;
• are distinguished by their low weight (this figure rarely exceeds 2 cm);
• as a rule, these models have low power;
• The saw blade size in hand saws is small;
• The cutting depth of this tool is also not very deep.

Disk

The mini circular saw also has a rather complex design. The main part of this tool is a disk designed for cutting various materials. This element has special teeth and is driven by starting an electric motor. Such tools are good because they are usually equipped with a number of additional functions that are very useful during certain work.

Such additions include the following:

• the ability to adjust the cutting depth - for this it is possible to shift the cutting half of the disk in relation to the thrust base of the device;
• removal of dust and chips - a number of tool models have a special connection required for connecting an industrial-type vacuum cleaner (this modification is especially relevant when it comes to large-scale repair work in order to prevent dust from settling on other pieces of furniture);
• protection against accidental shutdown - often to initiate a circular saw on wood you need to press two buttons in succession;
• continuous operation (without breaks) - this useful addition comes in handy if you plan to make fairly long cuts that take a lot of time.

Tabletop

Otherwise, such a circular saw is called stationary. It is multifunctional and very convenient to use. Moreover, such a machine can be made with your own hands, which is what many home craftsmen do. Of course, this unit will take up more free space, but it will also be more productive in its functions.

Rechargeable

Since modern high-capacity batteries have impressive dimensions, they hardly fit into the small body of a mini-circular. A capacious battery does not fit in this design. It is necessary to take into account the fact that the good thing about using these tools is that you don’t have to stay close to places where there are sources of electricity.

Rechargeable models are also good because their owner can stock up on an additional battery. The latter will make it possible to extend the operating time of the unit.

Other homemade machines

Many users are interested in what else can be done using improvised tools from a drill with their own hands? There are many answers - home craftsmen are already making various homemade products from drills in garage workshops. A drill is a universal tool, so with a certain skill and imagination you can make anything your heart desires.

A sharpener, you just need to buy some emery in the form of a circle and make a special holder in which the drill is attached. Drilling machine - there are special holders for vertical drilling or stand. Small lathe for wood processing. A mini-drill for various needs of the home craftsman. To easily mow the grass around your garden plot, you can make your own trimmer from a drill. A grinder from a drill is made quickly, just buy specific attachments. Garage auto repairmen install original engine replacement winches based on old, very powerful tools. Gardeners make holes for planting young trees using a homemade drill bit.

Characteristics and power

The functionality of using the equipment will depend on the correct choice of parameters, including speed indicators and drive power. The power rating is affected by the maximum permissible diameter of the toothed saw. It is believed that to process lumber with a thickness of about 10 millimeters, an electric motor with a power of 1 kW will be required. Based on the thickness of the processed and sawn timber, you should select the power of the electric motor.

Transmission from the drive in a self-made circular machine is best done using a V-belt. This allows you to ensure the necessary safety of using the equipment. When foreign objects get under the saw, the V-belt drive will slip on the pulleys, which eliminates injuries and jamming of the working disk.

Which circular saw to choose for installation

Long cuts, for example when cutting boards into timber or cutting wane, require prolonged work under significant load. In this mode, only high-quality circular saws can serve for a long time.

The same is true when working in stationary mode. When the circular saw is turned upside down by the saw blade and secured in the table, it turns on and works for a long time. At the same time, the graphite brushes actively wear out, the contacts of the rotor and the gears of the transmission mechanism are erased.

Optimal power is from 1.2 kW to 2.2 kW. There are large models with a power of up to 5.5 kW. But they are expensive and consume a lot of energy, and their power can be excessive.

Manufacturing technology

Using 20 mm plywood, you must make a blank for the tabletop, being guided by the selected dimensions. The canvas is marked using a marker and a ruler, and then cut with an electric jigsaw. The edges must be processed with a router. The material is sanded.

On the underside of the tabletop you need to mark for the saw. To do this, the blade is turned over, and the saw should be installed without a disk at the intended location. This way you can mark the parameters of the sole. Using a router, a recess is made in the tabletop in the range of 8 to 10 mm, and it is necessary to follow the seat that was marked in advance.

Manual router from a screwdriver

To convert a screwdriver into a manual router, you will need a sheet of plywood or chipboard, a clamp, fasteners and a feather drill (crown) for woodworking. To attach the future router using a plywood clamp, a stand and stop are made. Their sizes depend on the dimensions of the screwdriver.

Using a drill, a hole with a diameter of 40 mm is drilled in the central part of the rack. It will provide access to the cutting part of the milling cutter to the workpiece being processed.

Secure the screwdriver to the stand with a clamp. In this case, you need to leave a small gap (2-3 mm) between its cartridge and the stand. Secure the cutter in the chuck.

A homemade hand router has little power. Its spindle rotates at low speed. Therefore, the router can be used for processing small workpieces.

Other homemade machines

Many users are interested in what else can be done using improvised tools from a drill with their own hands? There are many answers - home craftsmen are already making various homemade products from drills in garage workshops. A drill is a universal tool, so with a certain skill and imagination you can make anything your heart desires.

1. A sharpener, you just need to buy some emery in the form of a circle and make a special holder in which the drill is attached.
2. Drilling machine - there are special holders for vertical drilling or stand.
3. Small lathe for wood processing.
4. A mini-drill for various needs of the home craftsman.
5. To easily mow the grass around your garden plot, you can make your own trimmer from a drill.
6. A grinder from a drill is made quickly, just buy specific attachments.
7. Garage auto repairmen install original engine replacement winches based on old, very powerful tools.
8. Gardeners make holes for planting young trees using a homemade drill bit.
9. When pouring the foundation for a utility room in the private sector, some users use a homemade vibrator made from a drill to quickly compact the concrete structure.

Main components, materials, tools

The algorithm for creating a circular saw with your own hands is quite simple. First you need to determine for what purposes the circular will be used. If this is a small portable machine for working with laminate and plywood, then it is worth considering a device made from a hand-held circular saw, and if there are more ambitious tasks, then it is better to think about a more reliable engine and the impressive size of the machine.

In any case, you will have to make drawings of the device in order to calculate how and where the equipment will be installed, how the main parts will be attached, and at the same time think about what tools will be needed for the work.

For a small portable circular saw made from a handsaw, you can use the popular design of assembling a body from multi-layer plywood or pieces of chipboard. Well, if you plan to use a belt drive and a motor from a washing machine, then you will need a tool for working with metal. You can't do without welding work here.

Design

It is better to make the machine small in size so that it can be put away on a shelf when its presence is no longer needed. Its design is extremely simple:

• base made of a thick board or piece of chipboard;
• working surface;
• racks;
• shaft with circular saw;
• electric drive in the form of a drill.

We make the base from a 30 mm thick chipboard sheet; it is enough to cut out a piece measuring 300x250 mm. For the desktop, we choose a sheet of duralumin 4 mm thick - it is quite rigid and light, so as not to weigh down the entire structure. In the right place we make a hole for the circular saw measuring approximately 160x10 mm.

The holder for the drill itself can be made independently - all the necessary dimensions and drawings are available on the Internet, but a similar design for the shaft with a saw can be purchased in a store or at a clothing market. The bearing for the shaft must be chosen to be dust-proof - when the homemade machine is working, there will be a lot of small waste in the form of wood dust.

A circular saw from a drill is assembled according to the standard scheme: first, all parts are fixed to the base, then the work table is mounted and the drill is connected.

How to make a washing machine engine

If there is an old washing machine collecting dust on the farm, the motor of which is in working order, it can be used as a basis for making a circular washing machine.

Remove the brushes, commutator and speed sensor wires from the housing. For reliability, it is recommended to check them with an ohmmeter.

Connect both collector outputs and coil contacts into a complete structure. Be sure to check the functionality of the device by connecting it to the network.

To change the direction of rotational movements, the contacts should be swapped.

You can increase the functionality and reliability of a circular saw by equipping it with a device that will increase or decrease the rotation speed of the cutting blade. A dimmer or trigger of a hand-held electric tool is used as such a device.

After making the base of the saw, you can begin arranging the tabletop. To do this, use a metal frame on which the machine motor is welded.

Screwdriver as a generator

The screwdriver is used for the generator. This is painfully easy to do. It is necessary to remove the battery, attach wires to the terminals using alligator clips and connect them to the consumer. You definitely need to check the polarity with a multimeter first. A hex key must be inserted and clamped into the chuck to assemble the furniture. By rotating the spindle, a current will be generated that will be supplied to the consumer. However, it should be noted that the voltage generated by this electronic machine may be enough to charge a mobile phone or operate a small LED lamp.

Making a countertop

Work on the manufacture of this part of the equipment is carried out in the following sequence: We begin by marking a piece of plywood, carried out so that its edges are flush with the edges of the prepared sheet of iron. After marking, using a hacksaw or electric jigsaw, you can cut the plywood blank to the required size. If desired, you can process its edges using a cutter, although this is not at all necessary (the main requirement for this element is its reliability, not attractiveness).

Upon completion of these operations, the surface of the tabletop is carefully processed (rubbed) with medium-grain sandpaper.

Then, on its lower part, the location of the slot for the saw blade is preliminarily marked. To do this, it is necessary to determine the dimensions of the sole of the circular saw prepared for installation. To make measurements easier, the blade is simply removed from the saw, after which you can easily determine the dimensions of the seat.

For ease of marking the tabletop, the saw blade is removed

Upon completion of its preparation, you should take a circular saw and try it on at the installation site. If necessary, the position of its attachment points is adjusted (at the same time, the contours of the slot for the saw blade are specified).

The finished plywood table top is covered with a steel sheet attached to it using self-tapping screws. Subsequently, it will be possible to apply special markings to the working surface, allowing the position of the wood piece to be adjusted during its processing.

A selection of products from AliExpress

On the Aliexpress website, the buyer is offered various adapter options to choose from, with which you can turn a regular drill or screwdriver into a hand-held circular saw. The most optimal of them is a set consisting of a set of saw blades of various diameters and drive axle shafts.

In addition to them, the delivery set may include cutters of various diameters for cutting small grooves.

We present to your attention a selection of the 3 best offers that can be found on AliExpress.

1. The best set in terms of price and quality ratio. The kit includes a disc with a diameter of 110 mm. Adapter, washer, nut and key for securing the disk. The best choice. View on AliExpress.
2. The best set of different discs. The set includes 2 adapters and 5 discs (from 22 to 44 mm) for sawing various materials. Made of stainless steel. View on AliExpress.
3. Another interesting set of 5 discs at a reasonable price. The set includes 5 discs with a diameter from 22 to 44 mm, differs from the previous one in price - slightly lower, because... Not many have been sold yet. So hurry up and buy. The quality is no different from the previous one. View on AliExpress.

Pay attention to the number of reviews, rating and price - hurry up to buy the nozzle while the discount is valid.

Shaft and bearing selection

The shaft is one of those units that you do not want to do yourself. In the worst case, you need to go hardware and buy a used shaft with a seat for the disk. The priority should be a new product. The most important thing is to completely eliminate runout, since this negative factor increases significantly when the disk is operating under load, which can lead to the fact that the mini circular saw, and even the stationary one, will be destroyed. As for bearings, it is better to give preference to self-aligning ball bearings. Again, any homemade option will not work, since such a product will not last long. It is advisable to protect the journal and bearing with a casing, which will prevent the entry of dust and chips. In principle, the circular saw is almost ready; all that remains is to assemble a couple more units.

Flexible shaft - extension

The flexible shaft is indispensable for furniture makers. It helps to attach fittings, screw small shelves and assemble components even in hard-to-reach places. The shaft bends at a large angle and transmits movement from the screwdriver to the nozzle located at the end, allowing you to quickly screw in self-tapping screws.

Flexible extension for screwdriver and drill

The device is made of high quality materials. The shaft is resistant to constant use, does not fray or deform. Suitable for most modern drills and compatible with a variety of fasteners.