Do-it-yourself mini circular saw at home

Disk selection criteria

The disk for the mini-circular machine must be chosen correctly, and several criteria are important.

Number of cloves. Keep track of the number of disc teeth. Their number will affect the quality of the cut parts and the cutting speed. The fewer teeth, the longer this or that work will take. It should be taken into account that the optimal diameter is 20 mm (models up to 85 mm are available for sale).
Parameters of the material that will be cut. If you plan to separate dense raw materials, it is recommended to use plates supplemented with carbide solders. Such devices are more expensive, but can be used longer and with higher productivity.

Disc type based on engine power. The power level of the engine influences the choice of a suitable saw blade. For example, for equipment that is planned to be operated in “peak” order, it is recommended to purchase negative angle disks with a large number of teeth.
External disk size. Be sure to keep an eye on this parameter of the saw blade you choose. This indicator should not exceed the casing indicators. If this rule is violated, then the small tool will turn out to be less convenient and, if necessary, it will be very difficult to fix it on a special plate.

Mini circular.

Model overview

Today there are many popular and productive models of small circular saws. They are very popular due to their functionality and small size. It is worth considering a small rating of the most popular models.

The Skil brand produces good budget-class instruments. They are distinguished by a 10 mm seat and a large diameter saw blade (89 mm). This popular tool can easily withstand impressive loads, as it is distinguished by the highest quality workmanship.

Skil products can be easily compared with expensive items from more well-known and larger brands. They are aimed not only at household use, but also at more serious applications.

Many furniture makers turn to such tools because they provide the highest performance and do not require constant repairs.

One of the most popular models of the Skil brand is the one marked 5330. This tool is ideal as a professional one.

However, it also has such disadvantages as:

impressive weight;
not the best ergonomics;
high cost for certain ones - even for the simplest saw you will have to pay at least 2 thousand rubles.

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:

POWERFUL 250 Watt DIY mini table circular circular

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.

It is recommended to buy a tool with similar listed properties and features to cut thin wood, as well as soft metal profiles. For these materials, such a device is ideal. As for denser raw materials, a small hand-held circular saw is unlikely to cope with them and can cause serious damage.

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.

It is more convenient to work with these devices because your hands do not get tired. The master can cut the parts he needs for a long time without looking for support.

What is a mini circular saw?

An electric mini circular saw is a narrow-profile equipment that is quite capable of replacing a conventional circular saw or angle grinder.

The tool is indispensable for home construction. It can handle cutting any lumber using a saw blade.

The structure of the saw has a complex design, but despite this, it is not difficult to make it yourself. This does not require special skills of an electrician or mechanic.

Saw based on a grinder

Home craftsmen strive to have an angle grinder available. This tool takes its rightful place in the workshop. The Bulgarian allows you to:

cut metal;
clean welds.

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Sometimes craftsmen purchase a new grinder while the old tool is still in working condition. So that it does not waste time collecting dust on the shelves in the workshop, it can be used as a basis when making parquet flooring, and by adding a table to the frame, it is possible to build a stationary circular saw.

Before you begin, you need to prepare materials and tools. During work, you will need sheets of plywood, wooden blocks, wires, and external switches. It will be easier to perform the actions if the master has the opportunity to use a drill, hammer, jigsaw, and pliers.

The grinder itself will be needed when cutting materials for making a circular saw. When all the materials and tools are prepared, you can proceed to practical work:

Four rectangular sheets with sides of 40 and 80 cm are cut out of plywood.
All four sheets are combined to form a box with a base of 80x80 cm.
To facilitate the joining process, four small blocks are fixed in the corners (they will not only facilitate assembly, but will also give additional strength and reliability to the structure).
The hollow box is covered with a tabletop (the simplest option can be cut from plywood, but professionals recommend using a material with a laminated surface).
A narrow space is cut out in the prepared tabletop through which the cutting tool will come out.
Holes are drilled on both sides of the cut to ensure reliable fixation of the tool.
The grinder is placed under the tabletop, securely fixing it with fastening materials (the grinder must be secured so that it does not change its position during operation).
Any power tool has a power button; it must be locked, since in the future the circular saw will be turned on via an external switch.

By following these step-by-step instructions, you can assemble a working model of the saw, as in the photo.

also build a movable carriage into which a nail is driven, and then its head is bitten off using pliers. The result is an important structural element - an eccentric on which the workpiece is placed. With its help, when rotating the part, it is possible to accurately cut corners, turning rectangular workpieces into rounded parts.

DIY mini circular.

A circular constructed using a similar method .
At the same time, in many ways the process is noticeably simplified, since it will be much easier to attach the tool to the tabletop.

Purpose of a circular saw

Home craftsmen strive to fill their workshops with a variety of useful devices and equipment. Having a circular saw, it will be easy to carry out woodworking without spending a lot of time and without exerting much physical effort. For example:

cut a board;
process the workpiece, strictly maintaining the dimensions indicated in the drawing;
cut wood.

The design of the tool is easy to manufacture, which attracts the attention of craftsmen who want to create useful devices with their own hands.

A circular saw consists of the following elements:

beds;
countertops;
cutting tool;
a motor that ensures rotation of the shaft, and subsequently the rotation of the cutting tool.

The operation of a circular saw is that after starting the electric motor, its shaft begins to perform rotational movements, driving the cutting tool. The cutting tool is a disk with sharp teeth.

The disk is secured so that its middle is below the level of the table top. As a result, only a separate segment of the disk is displayed above the surface.

The workpiece is brought directly to the rotating disk, the teeth of which cut into the wood, creating a perfectly clean cut strictly according to the drawing.

The circular can be supplemented with the following elements:

a pusher that moves the wooden workpiece in the direction of the rotating disk;
lifting mechanisms providing cutting depth.

Using ready-made drawings and diagrams, home craftsmen can assemble a tool based on:

Bulgarians;
washing machine motor;
chainsaws;
drills.

Circular saw from washing machine motor

If you have an old washing machine on your household that has exhausted its working life, you can use its parts. The motor from a washing machine can give life to a new tool.

If there is a choice, then the engine must be taken with a high power level. If there is no choice, then the engine that is available is taken as a basis.

Initially, you need to prepare the motor for the future circular machine. Using an ohmmeter, the coil with the highest resistance is determined. The following are subject to verification:

connections at the brush and commutator outputs;
speed sensor wires.

Next, you need to connect each of the two outputs of the collector to two contacts of the coil. After connection, a test run is done and the device is connected to the power supply.

If you swap the contacts, the rotational movements will occur in the opposite direction.

You can increase the functionality of a homemade circular saw if you equip it with a device that reduces or increases the speed of rotation of the disk.

To do this, you can use a trigger from a hand-held electrical appliance or a dimmer as a basis. They are connected in the following sequence:

one of the coil contacts is connected to the armature contact;
the second contact is connected to mains power;
the remaining armature output is output via a dimmer in the same way to the mains power supply.

After the motor is completely prepared, you can proceed to the further construction of the circular machine.

As a frame, it is better to take a welded metal frame, in the lower part of which the motor is fixed. The next stage involves manufacturing the motion module.

The cutting tool (disc with teeth) is rotated through a drive belt, which is fixed on a pressed-in smaller pulley. It is important to make notches on the pulley that will prevent the poly V-belt from sliding.

To prevent the drive loop from slipping, a small protrusion is specially welded on the edge of the larger pulley. Before starting the circular machine, it is important to check the reliability of the fastening of the disk and the motor itself. If a disc comes off during operation, it can cause serious injury, which in some cases can even be fatal.

Circular manufacturing process

In order to construct a circular saw from an angle grinder with your own hands, you need to think through the design of the machine. It is important to determine the tasks for which the homemade device will be used. After this you need to create a drawing. It indicates the main structural elements, their dimensions and performance characteristics.

After creating the drawing, the necessary materials and tools are purchased. The assembly of machine elements is carried out separately.

When making circulars, you must follow safety precautions:

Installation work is carried out only in special clothing. Eyes should be protected with goggles, hands with gloves.
All mechanisms of the device must be tightly secured. The angle grinder must not be allowed to move. The power tool must be secured to the base of a table or workbench.
Only high-speed saw blades may be installed.

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The process of making a manual circular saw requires skills in using machine tools. It is also important to know the specifics of the grinder’s operation and functionality.

DIY circular grinder at home

A circular grinder is a homemade device for cutting boards, particle boards, plywood and other wood lumber. This mechanism is small in size and is used in home workshops. To make a circular saw from a grinder, you need to study its design and purchase the necessary materials.

Materials and accessories

To create a manual circular saw from an angle grinder, you will need the following equipment:

Bulgarian. It is recommended to use models with a powerful electric motor to cut thick boards.
Disk. It must match the diameter of the mounting hole. It is important that the disc has teeth. It is recommended to use discs with an abrasive or diamond coating.
Electric drill. It is used for making holes necessary for installing brackets.
Welding machine. It connects metal plates.
Chipboards.
Tools for taking measurements: ruler, caliper.
Clamps, bolts, angles, nuts and other fastening connections.
Hammer, screwdriver, pliers and wrench.

Steel is used to make the frame. It is recommended to make the working surfaces of the circular saw from plywood or MDF. The thickness of plywood sheets should be 9-12 mm.

Manufacturing instructions

The process of making a manual circular saw from an angle grinder is carried out in several stages:

Assembling the frame in accordance with the drawing. The base for the machine can be made from a corner or a pipe with a rectangular cross-section. The parts of the frame are connected by welding. It is important that the base of the circular is stable.
Installation of chipboard or plywood boards on the base surface. A slot is made on the working surface to secure the saw blade.
Attaching the grinder to the work surface using curved metal plates. Use a drill to make recesses for the bolts.
Exiting the wire from the start button to the side edge of the angle grinder using a corner. This allows you to turn off the equipment from any position in emergency situations. For safety reasons, it is recommended to place the button at a far distance from the saw blade.
Manufacturing a sliding stop bar designed to adjust the thickness of the cut parts of the workpiece. The stop is secured with clamps.

After completing the installation work, it is necessary to check the functionality of the circular machine. The disk must rotate strictly in 1 direction. Otherwise, the lower edge will move, which will lead to the scattering of sawdust and other industrial debris that occurs during the process of sawing boards. It is recommended to test the homemade device by sawing a thin part. It is important that before starting sawing the machine reaches the operating spindle speed.

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 of a homemade circular saw from an angle grinder

A homemade circular machine consists of the following elements:

Bed. This element is a rectangular frame on which the main parts of the circular are attached. The frame is made of metal and has high strength. The parts of the circular machine are attached to the frame using bolts or by welding.
Wood disc. He cuts lumber. This element is installed on the drive shaft. The diameter of the disc is 14-30 cm.
Engine. It is used to transmit rotation to the sawing mechanisms of a circular saw. When creating a manual circular saw, it is recommended to use grinder motors with a power of at least 1600 W.
Rotation transmission mechanism. It consists of 2 pulleys located on the motor and drive shaft. Pulleys allow you to adjust the speed of the saw, depending on the type of wood.
Emphasis. It is designed for longitudinal sawing of workpieces and processing parts at an angle. The stop is attached to the working part of the machine.

A homemade circular saw has the following advantages:

Low cost of the device in comparison with stationary models.
Ease of manufacture.
High disk rotation speed (9000 rpm), which increases the speed of sawing parts.
The grinder can be dismantled and used for another purpose.

Homemade circular machines are most often used in repair and construction work. They can be used in the manufacture of furniture and other wood structures.

How to make a permanent stationary circular?

Now let's move on to the simplest part. This possession does not develop in one day, but collecting it is not so easy, and it also requires a large number of elements and parts. With such a stationary workbench, you can cut everything easily: both thin and thick timber. In principle, if you are not a master of wood design, then the tabletop option will be enough for you. If robots are moving frequently and with high intensity, you may want to think about assembling a stationary saw.

Regardless of whether a tabletop or stationary circular saw is made, the table is covered with a thin ball of steel or galvanized steel, which is necessary to increase the value. In addition, without a special coating, after about an hour a small hole will appear in the center of the table, and you will no longer be able to make a deep, straight cut. Let's take a look at how to develop and select the main nodes and what is special about the installation.

Making a workbench

The working table of a circular saw made from a grinder is a workbench. It performs the following functions:

Fixation of wooden products for their further processing.
Storage of necessary tools.
Assembly of wood structures at any stage of work.

The workbench must meet the following requirements:

Its height should be no more than 95 cm.
The working surface has the shape of a rectangle. Its length should be no more than 180 cm, width - 92 cm.
The support legs are manufactured according to individual parameters and can have different sizes.

To make a layout for a circular table, 4x8 cm boards or 5x10 cm timber are used. The main material of the tabletop is hardwood. The boards are covered with plywood sheets on top. When constructing the workbench cover, metal materials are used.

The workbench is made in several stages:

Creating a drawing indicating the dimensions of the workbench parts.
Making a supporting frame by cutting timber. It is necessary to make 4 support legs, 4 spacers and 4 horizontal beams. All elements are fastened using self-tapping screws and a screwdriver.
Design of the cover layout. The boards are treated with glue and attached to each other.
Sanding the table top. To fix it, it is recommended to use a frame made of boards connected with staples.
Installation of tabletops and cabinets using self-tapping screws.

To expand the functionality of the workbench, it is recommended to equip it with a vice that allows you to work with workpieces of various shapes.

Design elements of a self-made wood sawing machine

To make a stationary machine for sawing materials at home, you first need to know what structural elements it consists of. Whether it’s a homemade machine made from a manual circular saw, a grinder, or a tool assembled from disparate elements, the set of basic parts is the same.

The surface of the table must be made smooth for a higher quality product at the output.

The main elements of stationary circular installations are:

Table for connecting and securing mechanisms. If the circular saw is powerful and massive, it is better to use a metal table. Options made from chipboard, wood, plywood are suitable, the main thing is that the surface is smooth.
Shaft. The most important detail. When making it, a lathe is used separately. The dimensions should be calculated accurately to avoid runouts.
Casing. This element ensures safe use of the circular saw.
Engine. When using a grinder or circular saw, it is part of the power tool.

Helpful advice! If the design is supposed to be prefabricated, then when creating a circular machine with your own hands, the engine from a washing machine will be the most successful option.

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The design of the circular must necessarily have moving parts of the drives, and a button must be built into the power supply circuit to stop the engine in emergency situations.

Circulars of any fixed type consist of main parts

Stationary machine with your own hands

To perform everyday or one-time tasks, a hand-made circular saw is quite suitable. Small-volume sawing work does not imply heavy loads on the disk drive. The compact tool has small dimensions, which makes it possible to put it away after finishing work in a certain place. An experienced carpenter will need to make a large stationary type circular saw.

Making a stationary circular saw with your own hands will require precision and literacy from the master. Drawings presented in many types of literature will help in manufacturing. It is worthwhile to treat every component of the unit competently and carefully, because the circular machine is used at high speeds with a cutting tool.

Circulation table

Assembly diagram for a circular table

Table design diagram for a circular saw

The main condition for making a table is the selected material. It is recommended to use a solid steel sheet, duralumin or silumin alloy. Materials such as moisture-resistant plywood, plexiglass and textolite require processing and installation on top of a galvanized sheet. The use of any material in manufacturing must meet the main conditions:

increased vibration resistance;
sagging with a load exceeding 50-60 kg is unacceptable;
the presence of a perfectly flat surface.

In cases where the conditions are not met, a DIY circular saw may stop due to a jammed disk or a broken drive. The consequences can be different, from a damaged part to injury to a person.

There are several options for making a circular table. Stationary tables can be sawed or made from two parts. The circular saw blade should protrude no more than a third of its diameter.

Saw blade

The design of a DIY circular saw must contain a saw blade. The working surface of the disk is set to one third of the total diameter. For example, with a diameter of 210 mm, the disk should protrude 70 mm from the table. Parts with greater thickness will require a powerful motor, from 1 kW. A miniature circular saw will not cope with such tasks.

The splitting knife installed on some models serves to prevent short circuits and jamming during operation. It is located at the back a few millimeters from the teeth of the saw blade. The device may also be needed when making a circular saw with your own hands.

Adjustable side support

Any type of work will require a stop. The side support is made of a block of dense wood. In other cases, it is possible to make it from a metal corner. The arrangement should be slightly longer than the table structure. The stop is installed using bolts. The template is installed between the table and the cutter for precise installation and better settings.

Shaft

Homemade shaft

The most important part of the design is the shaft mounted on the circular saw. A self-made shaft for a circular saw can damage the structure and cause injury. The reason for this is runout, which cannot be avoided when making a shaft using artisanal methods. The manufacture of the shaft should be entrusted to a specialist with good turning equipment. You should remember that there is a cutter that needs a seat. The holes must be symmetrically machined and machined.

Finished shafts are sold in specialized markets. Preference should be given to parts with a self-aligning bearing. Otherwise, the conventional mechanism may soon render the circular machine unusable.

Broadcast

There are several types of gears that can be used in the design of a DIY circular saw:

V-belt transmission;
mechanism consisting of gears.

The preferred option is to use a belt drive. Using a mechanism with gears can lead to jamming if a foreign body enters and injury to the worker. When choosing the pulley diameter, the maximum number of revolutions of the saw blade is taken into account.

Motor

Electric motor for circular saw

In most cases, homemade machines are equipped with an engine from an old washing machine. The main features are increased service life and efficiency. The speed of such engines is not high, which makes working on a circular saw assembled with your own hands safer, longer, and has a positive effect on the result. The use of a special three-phase motor implies the presence of a 380 Volt network. If one is not available, you will have to use a starting and running capacitor, which leads to additional costs.

Scope of application of a homemade circular saw

During the construction of a new house, when wood material is used in large quantities, a homemade circular saw will not be enough. And such a device will require more functionality. But when performing repairs, a home circular machine becomes an indispensable technical assistant.

A DIY circular saw allows you to carry out safe work and speed up the construction process

Quite often, the dimensions of wooden elements are determined directly during the work. The ability to independently provide the process with the necessary materials significantly saves money and time. And often the quality of wooden blanks is guaranteed to be higher.

Using a homemade homemade circular saw, you can cut boards into bars, make planks, slats, trim blanks, saw slabs of wood materials into fragments of the required sizes.

Using a homemade circular saw, you can make such types of furniture as a table, shelf, rack. A similar stationary home tool is applicable when creating wooden sports equipment, making containers, etc.

When installing a disk with certain technical characteristics on a sawing machine, the mechanism can be used as a circular saw for metal. It is allowed to saw soft aluminum and sheets of other types of metal, the thickness of which does not exceed 2 mm. When working with thicker material, the mechanism will overheat, triggering an automatic shutdown.

For harvesting firewood and simple cutting of pieces of wood, a firmly fixed table with a slot for a saw will suffice

Mini table saw

A stationary machine is more functional and safer to use. A homemade table-type circular saw is made at home in the same way as a hand saw, with the addition of some elements. A homemade circular saw with your own hands will require prepared drawings. The process involves using a 2 cm pipe, the metal is bent in a U shape. The mount is installed with bolts to the table, the lower ends are bent in the direction of work. Additional stability is obtained by installing a lever with a jumper welded together in the shape of the letter “T”.

DIY mini circular

A table for a DIY table saw can be used as a cutting machine. The cut cannot reach more than 8 cm, so larger jobs will require the use of a larger machine.

Determining the parameters of a homemade circular saw at home

The primary task is to choose the power of the future stationary circular machine. Typically, devices with a power of up to 850 W are recommended for home use. If you are planning not to carry out repair work, but to build, for example, a bathhouse or a summer house, as a result of which you will need to cut a lot of material, then you can use a 1250 W motor. A device with a higher rating is not recommended, since such powerful circular machines require not only a solid stand-table, but also fixing the latter to the floor by fastening or concreting.

An important characteristic is the cutting depth. In home devices, it should not exceed 8 cm. In fact, this indicator is quite enough for sawing boards, plywood or wood boards.

When making a mini-circular saw or a full-scale sawing structure with your own hands, be sure to take into account the rotation speed. If you just plan to cut boards to make certain wooden elements, then you can limit yourself to a motor with a low or medium frequency. If you need perfectly smooth and clean cuts, it is better to use a high-speed motor. The optimal indicator for a home power tool is considered to be 4500 rpm.

For a circular machine, you can use a motor from a washing machine

Be sure to take into account the height at which the start button will be located. Its location should be convenient for pressing.

Important! The control panel of a homemade circular saw must be accessible.

Possible options for small, DIY circular saws

Any stationary circular machine , even a homemade one, requires a fairly spacious workshop. The space should allow not only to install the unit itself, but also to place the workpieces intended for cutting in the desired position. If the task is not to cut large-sized wood, but simply, if necessary, you need to make your own slats or bars for repairing furniture, etc., it would be more rational to acquire a mini table saw.

You can make such a device yourself, using the same principles as when creating stationary machines from an angle grinder or a circular saw. Only the stand will not be a trestle, the support of which is the floor, but a frame on which a small table with a fixed hand tool is installed.

Helpful advice! When making a circular saw of this type, it is important to take into account the overall height of the structure, that is, the plane on which the material intended for sawing will be located. Overestimating or underestimating the level will cause significant inconvenience.

The miniature machine is more functional and safer to use

If you need to create a mini circular saw with your own hands to make very small workpieces (aircraft, ship modeling), you can assemble the tool using a PVC pipe as a body and borrowing an engine from children's toys. It is easy to make a hole for the shaft in such a pipe. You can use a glue gun as a connecting material. Such a circular machine can be powered either from the mains or from a battery. To ensure autonomous operation, it is necessary to provide a special compartment for batteries in the housing.

How to make a circular saw with your own hands: preparatory stages of work

Before putting an end to the question of the advisability of making a circular saw yourself, you need to get acquainted with several similar devices firsthand and watch videos on the Internet. During observations and inspections, special attention should be paid to the main elements, parts, and methods of fastening. To understand how to make a circular, you need at least theoretical knowledge.

The manufacturing process can be implemented in two ways:

a set of elements for the future design is available, you just need to complete the assembly;
The components of the circular must be purchased.

In the case of the latter option, the task becomes somewhat more complicated, since parts and mechanisms are most often purchased in different places, but they must comply with technical and functional characteristics.

Scheme for making a circular saw with your own hands

Helpful advice! It is necessary to purchase elements for the future design of the circular only after a detailed installation drawing has been developed.

Without a drawing, it is impossible to take into account the dimensions of the elements and select a complete set. Quite often, this stage (drawing work) is omitted by home craftsmen due to lack of execution skills. There is no need to do this, since it is quite enough to draw a saw. At a minimum, this will allow you to visualize the future unit. Imagining what the end result will be is extremely important.

Only after you have a drawing or sketch and all the necessary elements, you can proceed directly to the assembly process.

Sources:

https://mainavi.ru/instrumentyi/samodelnaya-tsirkulyarnaya-pila/ https://lesoteka.com/instrument-i-oborudovanie/tsirkulyarka-iz-bolgarki https://remoo.ru/instrumentyi/cirkulyarka-svoimi-rukami

Circular machine design

Making a bed for a circular saw with your own hands is very simple. For manufacturing you will need the most ordinary lumber and very little time.

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Before you think about the design of the upcoming machine, you need to calculate the load to which it will be subjected. The main thing in the frame is reliability and stability. For powerful production saws, the base is a welded reinforced metal structure. But you don’t need such a unit to use it yourself.

If you have just decided to make your own woodworking machine, then you need to take into account the basic parameters of the equipment. Since saws can be different, naturally, the design of the bed can also be different.

First of all, you need to determine the power of the tool. As a rule, for home use, equipment is chosen whose power parameters do not exceed 850 Watts. But, for example, when building a summer house or country house, it is often necessary to cut a very large amount of wood.

That is, more circular power is required. But experienced craftsmen do not advise buying saws where this figure is more than 1250 watts. Installing this equipment in a home workshop is absolutely not justified. And working on it will only increase electricity costs.

The greater the productivity of the machine, the more stable the base is needed. For professional circular saws, as a rule, a base is installed, welded from a steel profile. Sometimes these frames are even concreted into the floor. Because vibration of the device can cause danger to life.

Depth of the proposed cut. The thickness of the material that will be processed on your machine depends on this parameter. This figure in semi-professional and professional machines ranges from 5 to 8 cm. For cutting boards and thick plywood, this is quite enough.

But working with logs on this machine will be inconvenient. In addition, you need to take into account that this characteristic is reduced in a homemade saw. The depth of the cut will be approximately 1 cm less. But this can be avoided if you provide in the table frame the ability to lower or raise the disk.

When making a tool with your own hands, you need to take into account the frequency of its rotation. If a circular saw to prepare building materials, then this figure may be less. If a clean and even cut is needed, then the rotation speed is needed quite high. This is needed, for example, for making furniture.

But even in this case, there are certain nuances. This saw is not suitable for cutting plastic materials. Due to the very high speed of the tool, the disk heats up and the plastic begins to melt.

Therefore, it is better to choose a device where the rotation speed is no more than 4500 rpm; in this case, the frame for the circular saw can be made of wood. The vibration of this machine is low and additional reinforcement of the table is not required.

Well, in the end, what needs to be considered is the location of the buttons and other controls on your machine. When assembling the saw with your own hands, do not forget that access to the control panel must be safe. This rule is even more important when the open part of the saw is located at the bottom of the tabletop.

In this design, it is best to place the panel with switches on the outside of the machine or make a rising tabletop. This design is also convenient for servicing the device. Then, when you have taken into account all the nuances and little things, you can begin directly assembling the table.

Circular from Dremel

Dremel is a power tool with a huge number of names. You may know it as an engraver, straight grinder, mini drill or drill. The essence is the high speed of rotation of the working tool on the shaft with the compact dimensions of the Dremel.

To assemble a Dremel-based mini circular saw you will need:

Discs;
Plexiglas;
Pipe clamps;
Bolts;
Wing nuts;
Pipe insulation;
Screws;
Drill;
Screwdriver;
Knife;
Wood glue.

The process of assembling a mini machine with your own hands follows the following instructions.

Wooden boards with approximate dimensions of 2.5 by 20 by 120 cm are sawn into 4 elements - 2 by 25 cm in length and 2 by 10 cm.
Other boards with dimensions of 2.5 by 5 by 120 cm are cut into 4 elements, each 14 cm long.
According to the pre-prepared cardboard template, make markings on the board. Its size should be about 2.5 by 20 by 25 cm. The template may be different, since it directly depends on the specific model of the Dremel used.
According to the markings, the board is sawn and drilled. Finish the edges with a cut to allow the tool to fit into the cutouts.
Using screws, all the structural elements of the mini circular are connected.
The Dremel is installed in place and secured with clamps. If necessary, do not forget to modify the grooves and notches.
Using plexiglass, you need to make a covering for the worktop of the mini machine.

At this point, the assembly of the Dremel circular saw can be considered complete. In this case, we are dealing with a truly mini circular machine. a circular saw that is more impressive in size . Therefore, the following two examples of mini circulars may be more suitable for you.

Circular from the engine

To manufacture such a unit, you can use any asynchronous motor with enough power for you. The choice of motor is based on how hard of a job it has to do.

The frame is made from a profile pipe by welding the elements. You can make a tabletop or floor design.
A metal sheet is mounted on top of the frame. Its thickness should be 3-4 millimeters. Fix using screws with countersunk heads. Instead of metal, textolite or plywood, covered with a thinner sheet of metal on top, is suitable.
The motor and shaft are connected to a belt drive.
Use the electrical connection diagram that matches the motor.
A switch is installed along with a block of capacitors in a convenient area of the structure.
The body of a mini circular saw can be assembled from wooden blocks.
If you have the desire or opportunity, cover the frame with sheet materials. The advantage of a wooden structure is that no welding is required. Connections are made with self-tapping screws and bolts with nuts.
The main working unit is installed under the desktop. It includes an electric motor, a spindle and a circular saw blade.
To assemble the spindle, many people use the pedal assembly of a regular bicycle.
It is recommended to use discs with a diameter of up to 130 millimeters. To satisfy everyday needs, such parameters will be sufficient.
For the engine, provide an air cooling system by blowing.

We figured out how to make a mini circular saw based on almost any asynchronous motor with our own hands. The task is not the most difficult, but requires a careful approach to execution.

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