How to make a desktop jigsaw with your own hands. How to make a homemade jigsaw machine. How to make a machine from a sewing machine

The idea of ​​\u200b\u200bcreating a home-made jigsaw is most often due to the shortcomings that a factory hand tool has. You can make a small desktop machine with your own hands, which will include a pusher, a reciprocating motor, a file tension system. In this case, you do not need complex drawings - having understood the essence, it is easy to achieve a result.

The desire to create a homemade jigsaw may arise for several reasons:

1. There is no power supply in the workshop, but it is possible to use low power internal combustion engines.
2. There are pneumatic motors, but the compressor power is not enough for a serial tool.
3. The electric motor is powered by batteries or solar panels, the power of the source is not enough for the use of power tools.
4. It is required to obtain saw movement parameters that are unattainable when using a serial tool.

Designing a jigsaw is not difficult. A typical structure looks like this:

The unit can be easily adapted to any torque source. A pair of pulleys (one is located on the motor shaft, the other drives the crank mechanism) allow you to vary the gear ratio, reducing the load on the power unit and allowing you to get the desired speed (they are also responsible for the number of saw strokes per minute) on the actuator.

A machine built according to the above scheme may have most different configuration, the material of manufacture is also selected individually. An example of a finished installation looks like this:

Disadvantages of a manual jigsaw

Manual electric jigsaw is designed to form even cuts. At the same time, as the rollers, rod, and pusher wear out, the saw may be beating and deviate from a straight line, and the angle of attack may change. Regardless of the quality of the tool assemblies, the following features are always present:

1. When the saw becomes blunt, a deviation from a straight line is observed when cutting material of uneven density (for example, low-quality chipboard). The saw is able to leave the cut line, having met a knot in the wood.
2. When trying to make a figured radius cut, one can observe the following picture: the upper cut line, followed by the worker, follows an exact trajectory, the lower one deviates, goes to the side, the radius becomes larger. The higher the wear of the tool and the lower the sharpness of the saw, the more pronounced this phenomenon.
3. Some materials cannot be worked with the pickup or bottom feed of the saw. The carpenter is required to drive the tool forward extremely evenly, which cannot be done very accurately, resulting in a beating of the saw along the path of entry and exit.

It is even more difficult to work with thin saws designed for curly cuts. If there is no practice, it is very difficult to achieve a good result, especially on a thick slab or wood materials. Consider how you can make the work of a carpenter easier, and the result better.

Standard Solutions

The machine is made from a manual electric jigsaw based on a simple table. This device is common, mass-produced, samples can be seen in the photographs below.

The mechanics of work is simple:

• The jigsaw clearly fixes the tool, ensuring that there is no influence of the human factor (the hand can lead the jigsaw unevenly).
• The presence of a support allows you to move the device without deviations along the trajectory.

With the help of a table, jigsaws begin to cut in a straight line, but the possibilities of such a device are limited. If you remove the side stop and try to guide the workpiece, forming a curved cut, the same problems of saw deflection arise. The problem can be solved by using a simple saw, rigidly fixed with a pair of rollers. Making curly cuts is now convenient and fast. How homemade and industrial products of this type look like is shown in the following photos.

Tensioners for curved cuts

To perform very thin and precise curly cuts, you can make a machine from an electric jigsaw with a saw blade tension system. The idea of ​​\u200b\u200bdoing it yourself is as follows:

1. A very thin saw is used, ideally for a manual jigsaw.
2. A clamp is attached to the rod of the power tool, which will stretch the cutting blade.
3. The trajectory stabilization system will regulate both one freedom of movement and two (horizontal and vertical).

Used as tension block hand jigsaw clamp, to which an adapter is made, which in turn is inserted into the clamping fixture of the power tool rod. To ensure the adjustment of one freedom of movement, a pair of angles and a bolt are used. The result of the implementation of the idea is presented in the following photo.

The saw provides a clear vertical movement, you can create a good tension, but there is a mandatory runout in the horizontal direction. The canvas goes with pickup, it does not move in a straight line.

The development of this idea is in the next photo. Here the part fixing the trajectory moves, and the metal clamp provides structural rigidity and mechanical resistance.

The system is stabilized in two degrees of freedom, the cut made with its help is accurate and accurate. Using a diamond-coated cord for a hand jigsaw, you can cut glass without the formation of sloppy chips on the edges.

Devices for extremely fine work

If you need to work extremely delicately and slowly, you will need to reduce the force on the cutting blade and at the same time provide a strong tension and precise movement of the file. To do this, a homemade jigsaw is equipped spacers with long shoulders.

In this case, the power tool does not operate in the cut zone, but at some distance. This allows, depending on the wishes of the carpenter, to adjust the force, speed and amplitude of the saw movement. One of the options for implementing the idea is presented in the following photo.

Depending on the needs of the master, the structure can be made of steel, have additional fixing zones, the power tool can not be installed rigidly, but with the possibility of movement within its support beam.

In practice, such solutions are rarely used. For delicate work that is done constantly, it is much more profitable to purchase a specialized band saw that will ensure quality and productivity.

As can be seen from the presented designs, a jigsaw can even be made from a sewing machine with a moving stem.

The jigsaw machine allows you to quickly and efficiently cut wood. consists of a working surface, racks, motor and spindle assembly. Some devices are made on stands. Clamps are quite often installed in the side of the work surface. It is also worth noting that the models differ in power. The manufacture of a jigsaw machine can only be carried out if the instructions are followed.

Desktop devices: expert reviews

If you believe the reviews, then making a desktop modification is very simple. First of all, a rack is prepared for the work surface. Its width should not exceed 30 cm. It is more expedient to select a motor of a single-phase type with a maximum voltage of 220 V. A home-made jigsaw machine (desktop) produces an average operating frequency of 55 Hz.

Reviews of experts say that yews are best used from steel, if desired, they can be cut out on their own. The file is mounted on a spindle assembly, which is attached to the rack. Many models use a latch that plays the role of a stop. To fix the file, a small screw is used.

Models on legs

If necessary, you can do this with your own hands. Modification drawings include frames of different sizes, and spindle assemblies are usually used with guides. Many models are made on a wide bed. Legs can be installed from tubes. There are also machines with plates. After cutting out the working platform, you should take up the spindle assembly.

If we consider devices with control units, then the model will require a controller. It is more expedient to use a motor of a collector type for 220 V. Yews are installed on jigsaw machines of a rotary type. The direction must be welded to the edge of the plate. The file in this case must be securely fixed. The optimum height of the spindle assembly is 2.2 cm. At the end of the work, it is important to install the power cable and connect the equipment.

Feedback on devices with a wide frame

Professionals are able to assemble a jigsaw machine with their own hands. Device drawings indicate the presence of wide stops. However, first of all, you need to install the frame. If we consider a simple machine, then the latch for modification can be selected for a small length. Reviews of experts indicate that two racks are enough for the model. A welding inverter is used to assemble the machine. The spindle assembly itself is installed in the central part of the working platform. The hole for the file can be made with a cutter. It is also worth noting that experts do not recommend the use of two-phase motors.

Compact modifications

Following the instructions, you can assemble a compact jigsaw machine with your own hands. Device drawings include double racks and narrow frames. Beds are applied with a low profile. Many models have a spindle assembly without a holder. In this case, the guides are set to a short length. For self-assembly of the model, it is recommended first of all to choose a high-quality frame.

Additionally, a clamp is soldered under the work plate. To reduce the level of vibration, you can use the lining. To fix it, ordinary glue is used. The file for modification should be selected with a small thickness. The optimal installation distance of the central node is 14 cm. At the same time, the width of the platform is on average 17 cm.

Jigsaws for 2 kW

If you wish, you can make this jigsaw machine with your own hands. Drawings for assembling modifications are very easy to find. As a rule, frames are used with a width of 35 cm or more. The thickness of the plate should be about 1.5 mm. The hole for the file must be made before installing the central node. If we consider models without stops, then the frame is used with a low profile. It is also worth noting that it is more expedient to install the spindle assembly on a lining.

A casing is used to reduce the noise level. Many models use multiple stops. In this case, the node is installed at a height of 10 cm. It is better to fix the file on the plate. The clamp can be screw type. After fixing the central node, the motor is placed. For modification of this type, a device with a single-phase unit is suitable.

Models for 3 kW

At 3 kW, a do-it-yourself desktop jigsaw is quite simple to make. Experts recommend using racks with wide stops. Fasteners need to be installed only after the central node. The file for modification can be picked up by 1.2 mm. Some experts make a hole after installing the frame. In this case, the supports are soldered on the sides of the table.

Next, it is important to evaluate the size of the spindle. It is more expedient to use the motor with a protection system and a casing. It is also worth noting that collector devices that operate at a frequency of 45 Hz are very popular. They have low energy consumption and do not overheat. Holders are used to fix workpieces. The optimum spindle height is 15 cm. It is also worth noting that there are models with tuning plates. A flywheel is used to control the rack. To install the control unit, there is a conventional controller.

How to make a 5 kW device

Having prepared a few stops and you can make a jigsaw machine with your own hands. Expert reviews indicate that 5 kW models are well suited for ripping. Before starting work, all the necessary tools are prepared. You will need a saw, as well as a welding machine and a cutter. It is more expedient to assemble a frame for a jigsaw machine from steel plates with a thickness of 1.3 mm or more. For the motor, you need to immediately provide a place. The beds in the devices are installed with a high profile.

At this stage, you can immediately cut a hole for the file. The plug assembly must be mounted on the top of the plate. Additionally, it is worth noting that the file will require a large holder. If we consider a simple model, then the racks can be installed on the sides of the frame. Yews are used rotary type. At the top of the frame must be a rack. A small casing is selected under the motor. On average, the frame width should be 35 cm. If we consider professional models, then they use adjustable clamps.

Modifications for two quills

How to make a jigsaw machine with your own hands? The model with two quills is assembled only on a wide frame. First of all, plates are cut out under the bed. If we consider a desktop modification, then it is more expedient to install the control unit at the top of the device. The optimal frame width is 45 cm. In this case, the spindle assembly is installed behind the stops.

Must be provided for racks. Many models use transfer blocks. In this case, the motors are suitable only for a collector type with a frequency of 30 Hz or more. The file is installed as standard in the holder. The optimal height of the spindle unit for models is 35 cm. Quills for adjusting the bed are used with flywheels.

Models for three quills

On the basis of a single-phase motor, it is easy to do this one with your own hands. Tools should be prepared in advance. Many models are equipped with frames for four stops. They are long and high profile. It is also worth noting that the spindle units are selected with. At the beginning of work, it is very important to calculate the length of the frame. If we consider ordinary spindle assemblies, then the rack for them is prepared for a short length.

The central support must withstand heavy loads. A welding inverter is used to install the plates. The motor will require a casing that will significantly reduce the noise level of the device. A saw for modifications of this type is suitable for 1.2 mm. With a power of 3 kW, a device for three quills will produce a frequency of 55 Hz. Brackets are needed to fix the flywheels.

Many people know from childhood the fun of sawing with a jigsaw. The technology is simple. But despite the seeming ease and simplicity of work, you can get very beautiful lace made of wood or plastic. This is a very slow process that requires perseverance and patience. To facilitate labor, jigsaw machines were developed. They are functionally divided into two groups: with manual and electric drive.

Muscle-driven jigsaw device

Homemade machine is easy to make. You can find many drawings of this plywood product. With a jigsaw, with your own hands and with an improvised tool, a simple but functional device is assembled in a short time.

The scope of jigsaws is extensive. They are used for cutting figured products from a variety of materials. And also machines are needed when cutting lumber. In this case, the outer contour of the workpiece remains intact. If you use various nail files, then a homemade jigsaw will perfectly process natural wood, plywood, chipboard, plastic, metal, in particular aluminum.

Examples of drawings of a do-it-yourself jigsaw machine, which works on muscle strength, have been repeatedly cited in various magazines of the Soviet era.

Nail files for such a jigsaw machine are produced in the form of a flat blade.

The main parts of the machine:

• Stanina (A).
• A working table with a slot for a saw (B).
• Large drive pulley acting as a flywheel (D).
• Small drive pulley. The drive is combined with a crank mechanism (D).
• Levers (B).
• A pedal that spins the flywheel through the crank assembly (E).
• Saw Tension Unit (G).

The master, constantly pressing the pedal with his foot, spins the flywheel. Through the belt, the movement of the flywheel is transmitted to the second pulley. Which, in turn, makes the crank mechanism with the saw blade move.

If the flywheel is correctly balanced, without distortions and with a uniform, correctly selected mass, then the nail file achieves good smoothness. Such a plywood sawing machine allows you to quickly produce many simple similar products. Cutting time and effort is significantly reduced.

With this design of the machine, the size of the initial workpiece is limited. It depends on the length of the levers (B). When the pattern becomes more complex, it is necessary to rotate the product around the saw.

Since the foot drive does not provide a completely uniform stroke and limits the freedom and imagination of the master, most often such machines are replaced with electric ones.

The design of the electric jigsaw

An electric tape jigsaw is a household universal device for making souvenirs, furniture, and various interior items. There are many options for the manufacture of such machines. But the main elements on which product quality and ease of use depend are the electric motor and the blade of the blade.

Main structural elements:

• Saw blade.
• Crank mechanism.
• Drive part.
• Tape tensioner.
• Bed or desktop.
• Various accessories.

Device and principle of operation

Alteration from a manual jigsaw

The first step is to make a desktop for the mechanism. For these purposes, a metal sheet or thick plywood is suitable. Holes are drilled and cut out in the worksheet for the cutting tape and fasteners.

Then the jigsaw table is placed on a regular table. After fixing, you can assemble the guide rails. To reduce vibration, it is enough to cut the rubber gasket of the desired size and place it between the jigsaw table and the main surface.

The above design is convenient in that it can be easily disassembled, and it can be used again as a manual jigsaw.

Since the standard apparatus has springs that tension the saw, a rocker is needed. One end of the rocker arm is attached to the cutting element of the machine, and the other is under spring tension. These simple actions will easily turn an ordinary jigsaw into a machine.

When using the device, it is important not to forget to turn off the pendulum stroke before starting cutting.

Sewing machine assembly

From a sewing machine, you can also quickly and easily assemble a homemade jigsaw machine. Moreover, this device has an interesting feature - a nail file stroke regulator, since there is a speed switch on sewing machines.

First, at the bottom of the machine, you need to find the thread weaving knot. To do this, unscrew a few screws. Inside, the cotter pin is knocked out and the drive shaft is removed, which is connected to the weaving complex. After completing this procedure, the top panel is unscrewed. The groove along which the needle traveled expands slightly to fit the saw blade. The nail files themselves are slightly shortened to the size of the length of the needle. To fix the saw itself, you can make an adapter. But the easiest way is to grind off the upper part of the cutting blade and sharpen the lower one. After that, you can insert the nail file in place of the needle and get to work.

When working with jigsaws of any type, you should not forget about the safety rules. Do not leave the device turned on for a long time unattended.

If the master has long hair, then it is better to pick it up or use a special cap. It is better to roll up sleeves on clothes. The room must be well ventilated. In the room where carpentry work takes place, a first aid kit with first aid for cuts must be kept.

The jigsaw has long ceased to be a rarity and is present in the tool kit of almost any home craftsman. It is convenient, able to cut various materials, relatively safe. The electric jigsaw is designed for cutting curvilinear figures, closed or with a complex configuration. It is indispensable when performing many works on home improvement, in the construction of plasterboard structures, boxes, and other works.

However, in some cases it becomes difficult or inconvenient to work with a hand tool: poor visibility of the cut line interferes, it becomes necessary to hold the workpiece with both hands, etc. But the main problem with a manual jigsaw is that the saw blade moves to the side, which is especially evident when cutting materials of great thickness and with small radii of curvature. In such cases, you need a jigsaw machine, which you can create with your own hands.

The purpose of the machine and the principle of operation

Picture 1 - Jigsaw machine

The jigsaw machine is designed to perform a curved or straight cut of sheet materials along a predetermined contour or along guides.

Unlike a hand tool, where the file is fixed only at one end and holds its shape solely due to its own elasticity, on jigsaw machines the file is attached at both ends.

Such a machine can become a woodworking, desktop, saw, 4 in 1, made from a circular, drill and cutter, etc.

The main structural elements are:

• frame with a stretched saw;
• crank mechanism, providing reciprocating motion of the frame;
• work table and bed.

The electric jigsaw successfully replaces the crank mechanism, setting in motion the frame with the file. There are simpler designs, where the jigsaw is simply attached upside down to the desktop from below, and the file either holds its position during operation due to its own elasticity, or is fixed on top with guides or a spring-loaded bracket that moves with it during operation. This allows you to reduce power losses when transmitting movement to the frame, but requires the use of elongated files, which are not often found on sale.

Advantage

The main advantage of a jigsaw machine is the ability to perform an accurate cut, the absence of saw blade removal to the side. In addition, the advantages of jigsaw machines over hand tools are:

• more effective visual control over the direction and accuracy of the cut;
• the possibility of using guides;
• there is the ability to install special templates that allow you to get many identical blanks;
• a narrower file is used, which allows to reduce the radius of curvature and cut parts of a more complex shape.

Together with these advantages, one more thing appears - the need to organize a workplace for sawing disappears, since the machine has an appropriate plane for this.

Important! Along with the advantages, there are also obvious disadvantages - cutting out internal parts is much more difficult or impossible, only trimming along the outer contour.

Basic design - drawings

There are ready-made platforms that allow you to quickly convert a hand tool into a machine tool. However, they are designed for jigsaws from a specific manufacturer and are not suitable for any device. In addition, the price of such platforms often far exceeds the cost of the instrument itself. Therefore, it is much easier to make a machine yourself.

Figure 2 - The design of the jigsaw machine

The basis is the desktop.

It has been empirically established that sheet metal tables demonstrate the greatest efficiency - they are durable, ensure mounting accuracy, do not require frequent replacement and do not reduce the working length of the file.

The jigsaw is attached to the table through the holes in the support plane, if necessary, it can be easily detached and used in the usual way.

The desktop is installed on the frame. It can be made of wood, chipboard or other materials. The main requirement is strength, easy access to the jigsaw and a size (height) convenient for the master.

At the end of the table, a rocker is installed, on which the second end of the file with a tensioner is attached. The simplest option is a conventional spring, which tensions the file and prevents it from drifting to the side with sudden changes in the cutting direction. The manufacture of this assembly is one of the most difficult stages of work, since the quality and cleanliness of sawing, as well as the magnitude of the load on the mechanism and the jigsaw motor, depend on it.

There are two options for the design of the tensioner:

1. Rigid rocker and a spring block at its end with a movable saw attachment.
2. Movable rocker with a spring at the opposite end and a rigid saw blade attachment.

Both options have their pros and cons, the choice is usually made in favor of the option that is the simplest and most accessible in terms of technical capabilities.

How to make a machine from a manual jigsaw?

Consider the procedure for the manufacture of a jigsaw machine. The design is a desktop with a jigsaw fixed from below. The rocker consists of a rigidly reinforced rack with a movable spring-loaded lever. This option is considered affordable and reliable, devoid of unnecessary components and parts.

For simplicity and clarity, it is recommended to sketch working drawings that will clarify some design features and answer questions about dimensions, connection points and other details of the assembly process.

The creation of the machine can be divided into three stages, which should be considered separately:

Preparatory stage

Before starting the direct manufacture of the machine, it is necessary to make some preparation. First of all, you should make a special adapter for installing the file. In most jigsaws, the landing end of the file is inserted into the socket and clamped with a screw.

The cutting body of the machine is a thinner and longer file with holes at the ends, which are put on special pins (or through which the fixing screws pass). Therefore, it is necessary to make an adapter, the lower part of which copies the shank of a standard saw blade for this jigsaw, and the upper part is equipped with a hole for a screw with a nut, with which the adapter is connected to a machine saw.

Here, the procedure is not limited by anything - some grind a part of the desired shape from a metal plate, others take a piece of a finished file with a shank and weld a steel washer to it, followed by processing for accuracy.

In addition, it is necessary to prepare the necessary tools and materials, including:

Figure 3 - Drawing of a jigsaw machine

• Bulgarian;
• electric drill with a set of drills;
• screwdriver;
• welding inverter with electrodes;
• pieces of chipboard or plywood for desktop and bed;
• connecting corners;
• fasteners(self-tapping screws or bolts with nuts).

This list is not exhaustive and additional tools or materials may be needed.

Create blanks

The first step is to make a desktop. A piece of plywood or chipboard of the planned size is sawn off. There are no special restrictions here, but you will have to take into account the size of the room in which the machine will be located. A table that is too small will be inconvenient for working with large details, and an excessive table area will take up a lot of space in the room (or workshop).

As a rule, when choosing the size of the table, they are guided by the size of the parts that will be processed on the machine. On the table, holes are made for attaching a jigsaw and a file. To do this, unscrew the sole from the tool, apply it to the table and mark the centers of the holes for the connecting bolts.

Important! The connecting bolts that fix the jigsaw on the work surface must be with a countersunk head so that they do not protrude from the plane of the table and do not scratch the workpiece during operation.

Figure 5 - Jigsaw rocker

The second step will be the manufacture of the rocker arm. It needs two elements:

• rack;
• movable lever.

For the rack, a profile pipe of rectangular section is taken and a support platform is welded in the lower part.

Its size should ensure the immobility, stability and reliability of the rack during operation under load.

The height should correspond to the length of the file in the maximum raised state, plus a small margin for the size of the attachment point.

The best option - in the middle position of the file, the movable lever is in a horizontal position.

The movable element is a beam mounted on a rack by means of a swivel joint. The length of the front part ensures that the attachment point of the file is located exactly above the corresponding element of the jigsaw. The back of the lever is connected to a spring that provides tension.

Then you need to make a tension unit. It is a conventional spring, which is tensioned with an adjusting screw. It is attached to one end of the spring, threaded into a special loop on the frame and pulled with a nut and washer.

Attention! From vibration, the tension nut is able to unwind, weakening the tension. It is recommended to fix it with a lock nut.

Assembly

The assembly process is not difficult. You need to do the following:

1. Connect the desktop and bed.
2. Install jigsaw.
3. Fasten the rack with bolts.
4. Install lever.
5. Attach tension spring and fasten on both sides.

If the calculations were done correctly, the file will move exactly vertically without yawing to the sides. It is recommended that before starting the jigsaw, check its progress and make sure that no unforeseen situations are expected.

When working with a jigsaw machine, you should adhere to the following rules:

• do not bring your hands to the moving file;
• do not try to stop the file or lever with your hands;
• change the cutting body only when the jigsaw is stopped;
• do not apply great efforts when feeding the workpiece to the cutting body;
• do not work with workpieces that are too thick.

In addition, you should remember the fire safety rules and always unplug the tool from the socket at the end of work.

Independent production of a jigsaw machine is not of fundamental difficulty, however, not every master has a need for it. As a rule, such devices are used by people who perform a large amount of work and need to create optimal conditions for this. Everyone chooses the design features of the machine for their own reasons and preferences, there are many options available. The quality and safety of the product directly depends on the degree of care and accuracy of assembly.

1. Device and principle of operation
2. Assembly instructions
3. How to remake a manual jigsaw
4. Machine from a sewing machine

Desktop jigsaw - equipment for cutting, sawing curly parts from various materials. Its feature is the possibility of cutting while maintaining the integrity of the outer contour of the workpiece. Depending on which file is installed on the structure, the machine can process natural wood, its derivatives, plastic bases or metal.

The device is indispensable for construction and repair work, the production of furniture, souvenirs. Often equipment is purchased for domestic purposes. Sometimes it is irrational to buy a factory unit: you can make a jigsaw yourself. The photo shows the design of the tool.

Device and principle of operation

The stationary factory sample includes a desktop for a jigsaw, a unit with a cutting element is fixed on it, an electric drive installed under the table top and a crank mechanism. The tension unit is installed at the top or bottom of the machine. Many models of units allow you to cut material at different angles. This is necessary for the implementation of an oblique cut. Often, for convenience, markings are applied to the swivel mechanism, stops, guides. The length of the cut depends on the dimensions of the table, in most models it is 30–40 cm.

The power of an electric jigsaw can be small. For domestic purposes, a 150 W unit is sufficient.

An important element is the crank mechanism. It is responsible for the quality of the transmission of the engine torque to the forward-return movement performed by the cutting element in a vertical position.

A standard jigsaw tool is characterized by an oscillation frequency of up to 1000 per minute with an amplitude of 3-5 cm. In some samples, the speed of processing various materials is adjusted. In most cases, a saw up to 35 cm long is installed on such a tool, which allows cutting parts up to 10 cm thick.

In order for the cutting element to serve for a long time without breakages, cracks, it is necessary to provide it with optimal tension along the entire length. For this, helical and spring springs are used. As an additional option on the factory machines, an air pump is provided to remove sawdust from the cutting line. A block with a drilling rig is useful, but you need to pay extra for each additional node.

Assembly instructions

A jigsaw is made from a refrigerator compressor, an ordinary drill. You can set the cutting blade in motion using the engine from the washing machine. Another option is to use manual electric jigsaws, old sewing machines. The figure shows a design drawing.

How to remake a manual jigsaw

First of all, the table is made. For this, a sheet of thick plywood or metal is used. Through holes are cut in it for the cutting blade, fasteners. Through them, the manual unit placed from below is fixed to the supporting structure. Next, the jigsaw table is fixed on any stable wooden table. Guide rails are added.

If necessary, the machine can be quickly disassembled.

The standard device is equipped with springs that provide the file with the required level of tension. You can not do without a rocker, one of its edges is under spring tension, the second provides attachment to the cutting element of the jigsaw. You can also clamp the web between two guide rollers.

Before starting work on a homemade jigsaw, the pendulum stroke must be turned off.

Machine from a sewing machine

A jigsaw from a sewing machine contains a saw blade travel controller provided with a speed switch on the equipment.

For manufacturing, the weaving mechanism is removed. In most designs, it is placed below. The bolts are unscrewed, the cotter pin is knocked out, the drive shaft leading to the thread weaving unit is removed.

Then the upper protective panel opens, the groove along which the needle moved expands to the file width parameters. Jigsaw saws are slightly modified: they are cut according to the size of the longest needle that could be installed on the machine. In order not to make an adapter for fixing the cutting element to the seat, grind off the upper incisors, make the lower part of the blade sharp. A cutter is installed in the needle holder. After that, they start cutting blanks.