How to make a circular saw from a coping saw

Circular saw for wood with their own hands

A crosscut saw made by own hands often is not inferior to the factory one. Manufacturing with drawings of such a unit you can see below. The device of such saws is similar to circular saws. Their advantages. limited weight and dimensions. They are therefore not only used in garages, but also on construction sites. The tool is needed for one purpose. cutting the ends of boards at different angles. Thanks to the fact that during the work the part is fixed, the cut comes out flat.

People who deal with woodworking, give preference to a homemade machine. Saws made by own hands according to own drawings can be used for a long time. The unit is a circular saw, the device of which gives a better opportunity to make a cut at an angle of most materials, including metals. It is possible to save money by making a trimming saw by yourself.

  • Grinding with an angle grinder
  • The details of fabrication
  • A crosscutting saw from a circular saw
  • Saw from various scrap metal
  • Advantages and disadvantages of self-made machines
  • How to choose a saw
  • Comparison of finished products
  • Properties of finished products
  • Nuances of use

The advantage of a homemade trimmer

Today no one is surprised by a crosscut saw. There are a lot of modifications, from branded to cheap Chinese, with a longitudinal and angular cuts on the market. But their cost is sometimes exorbitant, and their accuracy is not always what they claim to be. Is it possible to do without buying specialized tools, you ask. The installation we offer proves that the cross-cutting saw with a slit can also be made at home. The cost of assembling it is minimal. over, the drill on the basis of which our facer is made, can also be used for other purposes.

  • For the base: 14-20 mm thick plywood, galvanized on one plane;
  • Pobedite-blade longitudinal-cutting blade 125 mm in diameter;
  • Three pieces of plywood: 30×15 cm. for the handle, 24×15 cm. for the carriage, 18×14. for the base post;
  • The inseparable window hinge.1 pc;
  • Drill (can be without reverse);
  • Two pairs of p-shaped split window rails for furniture drawers;
  • Hardware: bolts, nuts, self-tapping screws;
  • Cardboard for the template;
  • Carpentry glue, wood varnish.
  • Drill or electric screwdriver;
  • Electric jigsaw with a wood saw;
  • Pliers, drills, screwdriver attachments;
  • Paint knife, tape measure, pencil, paint and glue brush.

Particularly Interesting

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Step-by-step guide

Let’s review the sequence of steps for converting a circular saw into a coping saw. The peculiarity of the “parquet” is its characteristic stroke. Move it along the surface of the material to be cut, but not vertically. Therefore, the machine will represent their base, which, firstly, will allow positioning and fixing the workpiece, and secondly, it has a base with stops, along which the circular saw will move in the device (parquet).

Preparation of the base

The base of the circular saw trimmer is a rectangular sheet of thick plywood or chipboard that is not deformed. Further on the base plate will be rigidly fixed to the shelf for circular saw movement.

It is necessary to make a slot in the base sheet (in the table) for the free passage of the saw blade. the blade must completely cut the workpiece positioned on the surface of the table, so the saw teeth must go deeper than its surface, but the blade must rotate freely. It is even recommended to form a table of two sheets of particleboard or plywood attached to each other flat: then a crosscut must be made in the upper sheet for the free movement of the saw blade.

Determining the shelf height for cross-motion

If the person working on the machine is right-handed, then the shelf for the circular saw must be located on the right edge of the table to be able to fix the workpiece on the table.

It is necessary to adjust the protrusion on the circular saw to the maximum and measure at what height above the table you need to position the shelf for the cross movement of the circular saw, so that the teeth of its saw blade do not touch the table. This measurement will actually determine the maximum thickness of the blanks.

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Constructing the shelf

On the surface of the table relative to the slot, screw the pieces of chipboard or thick plywood to each other to the previously measured positioning height of the circular saw, by screwing them to each other.

It should be considered that on the very last level will go a layer of chipboard, which will form the shelf for the circular saw movement. So when building up the height you need to keep in mind the thickness of the last layer of chipboard.

The movement shelf of the circular saw consists of two parts symmetrically arranged relative to the cutting line for the free movement of the blade. In fact you should get 2 “bridges”, exposed parallel to each other through the space for the saw blade and the right edge of the table in the very right part of this table.

Setting the stops

When the circular saw shelf is formed, it is necessary to position the saw on it and to mark it in such a way that the teeth of the disk get into the cutout under them, but also do not interfere with anything. It is necessary to mark the dimensions of the body on the shelves. exactly at these marks later you will need to expose the stops for circular saw’s movement.

These spacers should be made from scrap wood chipboard or thick plywood. They must be not less than 5 cm wide. Their main feature. the most flat edge, along which the circular saw will move. The stops should be set so that the circular saw runs tightly and evenly along them without any backlash.

To do this, it is recommended to expose them initially to the glue, and before it sets, to test the walking of the cutter. If everything is aligned correctly, then the limiters (or guides) should be fixed with self-tapping screws, screwing them to the shelves. As the rails are 5 cm wide, it is recommended that the width of the shelves should be at least 10 cm.

Alignment of the workpiece guide

This should be a strip of particle board or thick plywood, only here at least 10 cm wide, because it will have a much longer length. the rail should be 20% longer than the table, so that it is always possible to fasten it with a clamp in two places. It is set closer to the front edge of the table at the desired angle to the slot for the saw blade, and secured with screw clamps.

It is not necessary to fix the guide on the self-tapping screws, because then you will lose the opportunity to correct the angle of cut if necessary. The guide for the workpieces, of course, should be one, as the second simply will not be possible to fasten with a clamp in 2 places. When working on such a trimmer, the workpiece should be pressed firmly against the pre-fixed guide with one hand, while the other (right hand) performs cutting of the workpiece with the circular saw.

How to choose a mitre saw

Trimming saws differ in technical characteristics and can be of the simple (conventional) or combined type, which somewhat expands their functionality.

The difference of combined models from usual ones is that their design implies possibility of transformation of the end saw into circular saw by means of fulfillment of not complicated movements of main saw elements.

In addition, an important functional feature is the presence of the broach, which also extends the capabilities of the used equipment. Trimmer saw with pullback.In a special publication of our portal we will tell in detail about crosscut saws. You will learn the scheme of the device and the principle of operation, basic and additional functions, features of combined crosscut saws and the rating of the best models of crosscut saws with wood broaching 2019

You will learn the scheme of the device and the principle of operation, basic and additional functions, features of combined crosscut saws and rating of the best models of crosscut saws with wood broaching 2019

For stationary installation, it is better to use models that have a broach function, which allows you to process wide wooden workpieces.

Tips for choosing conventional and combination models

In order to make the right choice and take into account all the nuances associated with the peculiarities of using such equipment, it is necessary to listen to the advice of experienced users, which can be formulated as follows:

  • The tool must comply with its purpose. do not buy an expensive and powerful model, if you intend to use it periodically and for personal purposes.
  • In the same vein should be considered and the presence of additional options that increase the cost of the model, but are not used for small amounts of work.
  • Availability of protection and safety equipment is an important point when choosing a crosscut saw, t.к. if used incorrectly it is easy to get injured working with such equipment.
  • In connection with the fact that power and weight are directly related to each other, it is better to choose a less powerful model, but with less weight, if it is necessary to carry out jobs of travelling nature.
  • The size of the saw blade and the availability of the broach determine the technical capabilities of the tool to handle the material in question.
  • The frame must be heavy enough to support the saw in place, and the rotary table and stops must hold the material securely in place.
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recommendations for wood mitre saws selection

When selecting a model that involves stationary installation and intensive work, you should pay attention to the following points:

make, circular, coping
  • power and weight in this case are not the fundamental selection criteria, and the most important indicator will be the spindle speed, on which depends on the purity of the cut;
  • it is mandatory for a permanently installed tool to have all kinds of short circuit current and overheating protection of the electric motor;
  • The size of the saw blade should be the maximum possible, which will expand the capabilities of the device;
  • a broaching mechanism is optional, but highly desirable.к. It also affects the functionality and performance of the tool;
  • tool is to be welcomed as it affects its functionality and productivity;. equipment with additional options is to be.к. this is also positively reflected in labor intensity of operations performed with such equipment.

Recommendations for the selection of metal mitre saws

The basic selection criteria for saws designed for cutting metal are the same as for analogues that involve working with wooden workpieces, but, in addition, it should be remembered that:

Different types of discs are used for different kinds of metal, so special attention should be paid to their purpose and the size of the seating, as well as the outside diameter. The larger the metal workpieces to be processed, the larger the diameter of the saw blade should be

The protective cover must completely cover the disk during operation. The presence of a depth of cut limiter expands the capabilities of the machine. The more powerful electric motor has a higher output and the motor heats up less during operation.

Which motor to choose to make a circular saw?

Every owner would like to have a device for working with lumber in the garage, at the cottage, in a private home or when repairing a city apartment. But even a manual circular saw costs from 10,000. In this article we will talk about how to make a circular saw from a used washing machine motor. Such a home-made electric saw, assembled by your own hands at home, is able to dissolve boards of five-centimeter thickness. Weighs just over 20kg and is easy to carry in the trunk of the car.

The circular saw is always useful at home: in the country house or at a private home. But not everyone can afford a good expensive tool, and the cheap analogue quickly fails. The way out. to make a circular saw with your own hands. For example, you can make it out of the motor from an old washing machine, which is a pity to throw away, and takes space.

A working motor from a washing machine should not gather dust in the garage. Even a home handyman can find a use for it. We will tell you how to make a homemade circular saw from a washing machine motor.

Such a tool will help to saw firewood, master carpentry work

But be careful: the careless use of a homemade machine can lead to unpleasant consequences. That’s why you must be absolutely sure of your abilities before you get down to work

For a 350 mm saw blade you need 1 kW power to start. A disc with a diameter of 170 mm requires about 500 watts. So you can put the motor from an old washing machine.

In a washing machine, the speed is controlled by the tachometer, which controls the control module. But it is impossible to connect the module to the circular, so install a voltage regulator. Use the wiring diagram for proper motor installation.

You know what motor you need and how to connect it. Now consider the circuit design of the circular saw.

The main load will be on the moving elements. This:

  • The drive belt does not have to be taken from the washing machine, you can use other belts. The main thing is that they should have serrations, like a wedge type belt.
  • You need to make flow grooves on the small pulley. They will cling to the belt during operation, which will avoid slipping.
  • A larger disc is welded to the large pulley, which prevents the belt from slipping.
  • To mount the circular saw, use a shaft where it is mounted, as well as a washer and a nut that secures the. It is advisable to pick up or take this set from the factory installation, so that the disk is as securely fixed as possible.
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Creating a design, you must take into account that it is designed for 300th disc. Of course, the circular machine made with their own hands is only suitable for domestic use. Therefore, try not to overload the engine.

Often such machines are stored in the yard, outside, so protect the electrical part from moisture.

The frame is made of a metal sheet 3 mm thick. Before you make the frame, prepare a metal angle of 30 mm.

As shown in the photo above, the master has installed the frame in homemade stands of pipes. Now it is possible to adjust the height of the device. However, it is recommended to make a one-piece frame by welding pieces of angle between each other. The strong vibration over time loosens the fasteners of bolts and other elements.

We suggest to read: Does not turn on the washing machine Zanussi causes

Keep in mind that the mini circular saw is different in size. It is much smaller than a regular one and can fit when stored in the pantry.

The washing machine is a useful thing in the household. However, over time, the device fails. The washing machine has an element that should not just lie around in the garage. it’s the motor. It makes a great circular saw.

The concept behind this machine

I probably, like many people, have a hobby. I like to invent, design, build something with my own hands, but the approach to it is quite peculiar. In one of my articles I told about making a CNC machine from what I had accumulated in the garage (of course, much had to be added). I have already tried a lot of things with this machine, including various bas-reliefs and wood crafts. Actually, they have fallen into my heart and want to continue to work with wood using a machine with a cpu, but do not want to create a full-fledged carpentry (although it is possible to come to this).

To make something on a CNC machine, you need a workpiece and not always have enough width or thickness of the board, then you have to glue the workpiece from several pieces, resulting in a shield. The blanks for the future shield must be preliminary processed to make all planes as even and perpendicular as possible. You may have a question. “why not just buy the board”. Because of the hardwood panel is not everywhere to find and even less of them are made qualitatively, and the price of these boards frankly speaking. so-so.

Based on these reasons, and much more importantly. My own interest, I decided to make a machine tool, which could cut and even if desired, saw boards lengthwise, and also did not take so much space.

I must admit right away that the idea is not new, and I looked it up on the Internet, but the execution is slightly different.

Varieties of mitre saws

There are several types of mitre saws (also popularly called “trimmers”). Let’s get acquainted with these varieties.


The basic part of such a saw is the bed. A table is mounted on the bed, which must have a swivel mechanism with a ruler. It is this mechanism that allows the sawing process to be performed at a specific angle, adjusting it to the specific individual needs of each user. And this angle can be changed by moving the working table directly in relation to the frame.

As for the saw itself, it is fixed in this device by means of a lever and also spring-loaded by means of a hinge. Thanks to the pendulum, which gave its name to this type of crosscut saw, the saw moves downward or upward.


When using a combination saw the cutting angle can be changed in 2 directions. Like the previous variant, the device contains an additional hinge. In order to change the angle of cut, it must be adjusted and moved to the side that is opposite to where the drive is installed.

With a broach

This device is considered the most versatile, because the saw can be moved not only around the axis, but also along the kerf in a straight line.

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