Homemade jigsaw machine - design and production at home. DIY jigsaw machine - simple modifications! How to make a jigsaw from a sewing machine

The idea of ​​making a jigsaw came to me many years ago, but I brought it to life much later - when someone discarded a faulty sewing machine produced by a Podolsk plant fell into my hands.

From the “insides” of the machine, I took only the main shaft and the “needle bar” assembly, and dismantled the remaining parts. I also cut off the front part of the platform, leaving only the thrust bearing under the L-shaped body stand. I sanded down all the tides on bottom surface. I drilled holes in the corners of the thrust bearing and through them I attached the inverted machine to the table top of the cabinet from below. By the way, I also used the cabinet from an old footstool sewing machine True, finding such a cabinet is perhaps more difficult than the machine itself. But it is not difficult to make it from a 20 mm thick chipboard. On top, the lid was covered with a steel sheet 1.5 mm thick (can also be made of duralumin).

A pulley with a diameter of 80 mm for a V-belt drive was installed on the protruding end of the main shaft (you can also take it from an old foot sewing machine, you just need to bore it for a V-belt). A similar pulley, but with a larger diameter (100 mm), was installed on the electric motor shaft. Electric motor - single-phase (220 B) with a power of 180 W and a speed of 1350 per minute, together with a pulley, used from an old one washing machine

The electric motor was mounted on the lower platform of the stand, which was made from fairly strong bakelite plywood 20 mm thick, since there was no floor in the stand itself. In the platform, I previously cut out oblong grooves through the holes in the legs of the electric motor to move the motor in order to tension the drive belt. The sawing unit is difficult to manufacture and requires some experience in working with metal. But it does not require precision (particularly precise) execution, so its parts, right down to the saw, can also be made by yourself.

The sawing unit is shown in the figure. A mandrel with a slot made of a hexagon is put on the needle bar, which is fixed with locking screws. A file is inserted into the slot of the mandrel, onto the shoulders of which a washer with a slot-like hole and a groove is first put on. The washer with its groove rests on the shoulders of the file. Then the union nut is put on and carefully tightened so that during operation the file did not break, a thrust roller assembly is provided. To do this, a hole measuring 65 × 13 mm is sawed in the lid. Above this hole, a plate is symmetrically fastened to the cover with countersunk screws. Below it, a roller holder is installed. It is fixed with countersunk screws and a plate with two threaded holes. A roller made of steel is installed in the slot of the roller holder and secured with a rivet-axis with a diameter of 3 mm. The plate must be installed flush with the surface of the lid, so you need to select a recess for the plate with a chisel.

The file is made of carbon steel, if there is no purchased one The teeth are cut with a small file and needle files of the same shape as longitudinal hacksaws The teeth must be set, but since they are very small, it is almost impossible to use a special tool for this purpose Therefore, the saw blade must be clamped into small a vice, then with a beard and a hammer, light bending blows should be applied through the tooth. Then the file is turned over and the remaining teeth are bent in the same way. After sharpening, the teeth must be hardened.

The desktop jigsaw machine is designed for cutting out various parts that have complex configuration, from sheet materials. This tool is capable of working with MDF, chipboard, fiberboard and many others. Jigsaws can also cut out the internal contours of parts if you first make a small hole. This tool has a wide range of applications, since it is capable of providing high productivity, which cannot be achieved with a conventional hacksaw.

Design features

The design diagrams of all jigsaw machines are usually the same. Having carefully examined the drawings where this tool is depicted, you can see the following structural components:

• the bed, which is also often called the body. It is designed to accommodate all structural elements of the unit;
• drive mechanism;
• crank mechanism. It is necessary to convert the rotational energy of the motor shaft into the movements of the saw used during operation;
• double rocker arm. Equipped with fasteners for a file and a tension device;
• Desktop. In some modern models it has a rotation mechanism that moves at a given angle.

How to make a machine from a jigsaw?

To make a jigsaw from a manual jigsaw, you need to follow these instructions:

1. First you need to make a table where a homemade jigsaw will be installed in the future. For this purpose use any durable sheet material– thick plywood, metal and others.
2. They do it in the table through holes, designed for cutting blades and various fasteners.
3. The resulting jigsaw table is installed and securely fastened to a suitable wooden table.
4. The resulting table is equipped with guide rails.
5. Fixed at the bottom manual jigsaw, which allows you to replace the drive mechanism of the machine and many of its other structural elements.

Anyone can make such a jigsaw machine with their own hands. Its advantage is that at any time this unit can be quickly disassembled and only hand tools can be used.

Homemade jigsaw table machine from a manual jigsaw

How to make a more professional instrument?

A homemade jigsaw machine can have all the qualities that are present in professional equipment. To make it you need to follow these instructions:

1. The bed is made from any durable material– 12 mm plywood, plastic, textolite and others. It should consist of a base, a housing to accommodate all structural units and a work table.
2. On the other side, a rocking chair with an eccentric is placed. They need to be connected to each other using metal plates with sleeve-type bearings. The resulting structure is installed using screws.
3. The intermediate shaft is formed from several bearings.
4. The metal pulley is placed very tightly on the shaft and the screw connection is secured.
5. To change the movement characteristics of the rocker, 4 holes are made on the eccentric flange round shape threaded. They should be placed at different distances from the center line. The amplitude of movement of the rocking chair is regulated by the location of the screws.
6. The rocking chair is formed from wooden rocker arms, which are attached on a hinge to the stand.
7. Small cuts are made at the rear ends of the rocker arms. They are designed to install tension screws.
8. The front ends of the rocker arm are designed for mounting a saw blade. It moves using special metal hinges. Before attaching the file, it is installed in a groove located on the work table.
9. The rocking stand is made from whole piece durable material. At its upper end a groove is made for installing the rocker arm, and near the lower end a small rectangular hole is cut out for mounting the second rocker arm.

How to make a machine from a sewing machine?

A sewing machine makes an excellent jigsaw, which is equipped with a saw blade movement regulator. It is not difficult to do if you follow these instructions:

1. The thread weaving mechanism is removed from the bottom of the machine. On some models it may be located in a different location.
2. To dismantle this unit, you need to remove several bolts, then remove the cotter pin and drive shaft.
3. The top protective panel is unscrewed. After this, the groove along which the sewing needle moves must be expanded to suit the parameters of the file.
4. The cutting element itself is also slightly modified. It is trimmed according to the length of the sewing needle.
5. It is not necessary to make an adapter to install the cutting element. Instead, you can grind down the upper incisors a little and process the lower zone of the blade.
6. The file is inserted into the needle holder and work begins.

All presented options for manufacturing jigsaw machines are very successful. The resulting units are distinguished by high labor productivity, and making them is not at all difficult. Depending on their skills, each master will be able to choose best model homemade equipment.

Video: Jigsaw from a sewing machine

A pulley with a diameter of 80 mm for a V-belt drive was installed on the protruding end of the main shaft (you can also take it from an old foot sewing machine, you just need to bore it for a V-belt). A similar pulley, but with a larger diameter (100 mm), was installed on the electric motor shaft. Electric motor - single-phase (220 B) with a power of 180 W and a speed of 1350 per minute, together with a pulley, used from an old washing machine
The electric motor was mounted on the lower platform of the stand, which was made from fairly strong bakelite plywood 20 mm thick, since there was no floor in the stand itself. In the platform, I previously cut out oblong grooves through the holes in the legs of the electric motor to move the motor in order to tension the drive belt. The sawing unit is difficult to manufacture and requires some experience in working with metal. But it does not require precision (particularly precise) execution, so its parts, right down to the saw, can also be made by yourself.

The sawing unit is shown in the figure. A mandrel with a slot made of a hexagon is put on the needle bar, which is fixed with locking screws. A file is inserted into the slot of the mandrel, onto the shoulders of which a washer with a slot-like hole and a groove is first put on. The washer with its groove rests on the shoulders of the file. Then the union nut is put on and carefully tightened so that during operation the file did not break, a thrust roller assembly is provided. To do this, a hole measuring 65 × 13 mm is sawed in the lid. Above this hole, a plate is symmetrically fastened to the cover with countersunk screws. Below it, a roller holder is installed. It is fixed with countersunk screws and a plate with two threaded holes. A roller made of steel is installed in the slot of the roller holder and secured with a rivet-axis with a diameter of 3 mm. The plate must be installed flush with the surface of the lid, so you need to select a recess for the plate with a chisel.

The file is made of carbon steel, if there is no purchased one The teeth are cut with a small file and needle files of the same shape as longitudinal hacksaws The teeth must be set, but since they are very small, it is almost impossible to use a special tool for this purpose Therefore, the saw blade must be clamped into small a vice, then with a beard and a hammer, light bending blows should be applied through the tooth. Then the file is turned over and the remaining teeth are bent in the same way. After sharpening, the teeth must be hardened.

On this stationary jigsaw It’s more convenient and more productive to work than with a manual electric one, especially with small workpieces. And the quality, in my opinion, is much higher.

Jigsaw diagram and drawings

The video shows a jigsaw from an old sewing machine in action

Well, another option for creating a jigsaw

Materials and tools used

List of materials:
- old sewing machine;
- engine of suitable power;
- Belting;
- plywood;
- round timber;
- bolts;
- sheet iron;
- channel;
- profile pipes;
- plastic ties;
- cutting blade from a manual jigsaw.

List of tools:
- ;
- Miter saw;
- ;
- ;
- taps for threading;
- dye;
- spanners, screwdrivers.

Homemade manufacturing process:

Step one. Preparing the Sewing Machine
Let's prepare the sewing machine, we need to remove all unnecessary things. First, we disassemble the lower part, unscrew the connecting rods, we need to completely remove the base from the machine.

Next, the sewing machine has two rods at the back; we leave the one that moves, on which the needle is attached. The other rod needs to be removed; it is not needed. At the same time, we lubricate all moving parts, since the load on the sewing machine will be greater.

Next, we need to make a frame, that is, that part of the frame on which we will install the part from the sewing machine. The frame must be strong, since the machine will be held on by only two bolts. The author uses a piece of channel material as material. We cut off, weld the mounting ears and securely weld the channel to the frame. After this, you can secure the sewing machine to the bed.

All that remains is to make a clamp for the knife, cut a slot hole in the workpiece with a hacksaw for metal, and then insert a knife into the slot and weld the slots from the outside so that the saw has something to rest against. But when welding, you need to make sure that the saw itself is not welded.
We will clamp the canvas with two bolts, drill holes for them and cut the thread.

We install the engine, the author installed a capacitor next to it with plastic ties. We also install a switch; the author uses it as a keyboard type and is easy to use. We run the cable along the frame and secure it with plastic ties so that it does not interfere.

Probably in almost every family, inherited from their grandmother, there is an old hand (or foot) sewing machine lying around. No one will sew on it anymore, but it’s a shame to throw it away - it’s a working thing.

It is from such a sewing machine that you can make a manual jigsaw for cutting plywood, balsa and plastic. Additional materials will require a file for figure cutting from a jigsaw (you can buy such a file at a tool store for 15-20 rubles). On average, it takes about 20 minutes to convert an old sewing machine into a manual jigsaw.

Such a jigsaw will be very useful for those who like to make crafts with their own hands, a modeler, or just someone who likes to put their hands on wooden dies and make a necessary and useful thing out of them!

By the way, using the technology described below, you can also electric jigsaw. To do this, you just need to take an old electric sewing machine as a basis.

The procedure for re-equipment is as follows:

1.Remove the thread weaving mechanism (it is located at the bottom), you need to unscrew two bolts.
2.Remove the drive shaft of the thread weaving mechanism; to do this, knock out the cotter pin.
3. We unscrew the panel (again a pair of bolts) that covers these mechanisms and, in the place of the hole where the needle goes through, use a file to saw the slot to the size of a jigsaw file.
4.Now you need to prepare the file:
4.1) cut off its top so that the length is like that of a sewing machine needle.
4.2) use a file to grind down the teeth at the top until a solid blade appears to the length of the base of the needle.
4.3) on the back side of the file we also grind down to the thickness of the base of the needle.
4.4) sharpen the lower part of the lance to the point

5. Now insert the file into the needle holder of the sewing machine.
6. By turning the wheel of the sewing machine, we make sure.
- that the file does not touch the foot and the panel.
- that the plywood goes under the saw in the upper position of the mechanism.
- that the broaching mechanism is working, and set the broaching speed convenient for work.

That's the whole change. Now you have a much-needed machine for cutting plywood, plastic and balsa in our DIY business.

See an example of cutting ribs for an aircraft model

Of course, all this can be done with an ordinary hand jigsaw, but it will take much longer. Why waste time when you can save it?

Also interesting:
Small homemade jigsaw- a small tabletop jigsaw.
Jigsaw - a tool for the workshop - article about how to use a jigsaw correctly.
Do-it-yourself CNC machine - how to make a multifunctional CNC machine at home.

Valery comments:

This machine was made from a sewing machine and brought to everyone’s attention by an aircraft modeller.

the novel comments:

Making a jigsaw with your own hands

• Types and purpose
• Manufacturing
• The basis of a sewing machine

For a person who is used to on our own To cope with everyday problems, a jigsaw is a necessity. Electric jigsaws are also good for those who like to tinker, for those who live in their own home, and for summer residents. You can make a jigsaw with your own hands, since this model differs significantly in better side from hand tools. An electric tool improves the quality of sawn products, and also facilitates and speeds up the work process.

Types and purpose

A jigsaw is a thin saw that additionally has a ski to guide the saw blade along the surface. The jigsaw was invented by Albert Kaufman, who at first simply replaced the needle of a foot- or electric-powered sewing machine with a blade. A modern jigsaw has simple design as electric motor and setting the blade in motion simple mechanism. The front, upper part of the tool has a guide, and the lower part contains a retractable saw blade that makes cuts. An electric jigsaw has a support platform that allows you to focus on the part being cut and work with great precision.

The device of a homemade jigsaw.

A jigsaw can cut through plastic, plywood, copper, brass or steel with equal success. The functions of a jigsaw should allow it to make both straight and curved cuts on various types of materials without disturbing the external contour of the product. The fixed position of the tool allows you to make cuts high precision. Hand jigsaws do not have a tension system and guides, thanks to which a jigsaw has such a smooth and stable move.

A manual jigsaw is inconvenient for cutting out small parts. Since it is quite heavy, you have to hold it with one hand and guide the workpiece with the other. A tabletop jigsaw does not have this drawback, but it is difficult to process large parts with it, and it is quite large in size. It is best to use such a jigsaw as a mini-machine for the production of small workpieces. The simplest desktop jigsaw is easy to make with your own hands.

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Manufacturing

Drawing of a thermoelectric jigsaw.

The simplest model is made quite quickly, but its availability is usually sufficient for household needs. A carefully made jigsaw will be no worse than one made in a factory, and in some ways it may be able to surpass it. In order to make a jigsaw, you will need:

• manual jigsaw;
• heating thread;
• screws;
• plywood;
• duralumin pipes up to 12 mm in diameter;
• drill;
• clamp.

For normal operation of a jigsaw, the following parts must be present: a comfortable handle, a switch (a push-button switch is most convenient), a power cord, and a heating filament.

Fundamental electrical diagram starting the electric motor.

The first step is to make a frame from a duralumin pipe, but for the base you can also use textolite of at least 10 mm or thick plywood. The lighter the frame made, the easier the jigsaw will be to use. The frame must have a channel for the power cord. Experts believe that best form frames - one in which one of the sides is deviated by 45º.

Then an earring is made from a millimeter-thick copper sheet and attached to the frame with screws in the place where the frame is connected to the handle. The earring, screw and wing nut form a clamp in which the heating filament is fixed. The clamping cheeks are made from a 0.8 mm thick duralumin sheet, and a push-button switch is located between them.

After this, a slot-like hole is cut in the plywood through which the file can pass. It is convenient to make this gap using a drill. Markings are made and holes along it, the transitions between which are smoothed. Instead of plywood, plexiglass, plastic, or metal can be used. The drill is then used to make mounting holes in the plywood and on the base plate itself. A jigsaw on a plywood base is secured with screws so that the file can pass through the gap. The structure is attached to a table or workbench using a clamp so that the file is directed upward. If the clamp is not suitable, you can use another fastener that is more suitable for the specific case. Although the file in this case remains standard, both hands are freed up, thereby increasing the cutting capabilities, so the design is functional even in this form.

As a heating thread, you can use a nichrome spiral from any heating device, for example, from an iron. It is secured like a standard saw blade between the ends of the frame with slight tension. To heat the filament, 14 V is supplied, and a rheostat is used to control the voltage. Current determines length and thickness nichrome thread, a rheostat helps set the optimal current strength. The current strength affects the temperature to which the thread is heated; if it is too high, the material will heat up and may catch fire, and if it is too low, cutting will be impossible.

An optimally tuned jigsaw, made by yourself, will allow you to cut out shapes with complex shapes.

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The basis of a sewing machine

Jigsaw speed regulator.

The advantage of this design is primarily its simplicity, since the drive does not even have a belt drive. This model will cut boards up to 50 mm with ease. The jigsaw will consist of 2 wooden parallel mounted levers, which are mounted on a rigid wooden frame. They are connected at one end by a strong nylon cord, and at the other by a tensioned file. Due to a pair of eccentrics, the file will make reciprocating movements, since this pair of rotating weights is attached to the lower lever, swinging on the axis of a support block with a sliding bearing. It is most convenient to use a working motor from an old sewing machine as a drive. If the weights are eccentrically fixed on the axis, then each revolution of the motor shaft will provide a cycle of reciprocating movement of the saw. By changing the size of the attached weights and the degree of tension of the nylon cord, the stroke of the saw can even be changed. You will need to make:

• sewing machine motor;
• boards;
• steel rod 20 mm in diameter, a threaded bolt works well;
• steel strip for making weights; old watch weights will also work;
• saw blade.

The body parts are made from 2 boards, sawn to size 20x250x800 mm, so that the holes match more accurately, they are first fastened together. When cutting out the outline, all the edges of the parts are rounded, except for those adjacent to the base. The distance from the attachment point to the axis of rotation of this tool is 6 mm greater at the upper arm. This allows you to increase the resource and efficiency of work, since when moving up, the saw moves back, and when moving down, it leans forward. If the inclination is reduced, the tool will cut more slowly, but the accuracy will increase.

The support axis is used to attach loads to it on both sides. Before final tightening the nut, you should make sure that the weights are installed symmetrically, since if the reciprocating movement is uneven, the cuts will be very sloppy. Then the support block is installed on the lower lever; before final fastening, you need to check whether the loads touch the lever during operation. The motor is connected to the jigsaw using a flexible rubber hose of sufficient length.

The upper and lower arms are installed on the frame; saw blade holders are cut out at their ends and secured with pins. The better the tension of the file, the faster, cleaner and smoother the cutting will be. You can use threaded rods, as in branded jigsaws, but tensioning with a nylon cord is also quite effective.

Making a homemade jigsaw

• Jigsaw machine: practical recommendations
• A few words in conclusion

Homemade jigsaw. Sounds unreal. However, professionals have always been valued and in demand. Carpentry can be both your main income and a pleasant hobby. The hands of a carpenter produce wonderful products, unique and inimitable. IN modern world, with its terrible ecology, every person increasingly strives to surround himself with natural, natural materials. Handmade wooden items can become an exclusive, priceless gift.

A jigsaw is capable of cutting any sheet material lengthwise and crosswise.

But in order to create all this magic, you will need not only quality wood, but also tools. A wide variety of wood jigsaws are sold in stores, but a true master will not be satisfied with such a tool. Because they are not suitable for performing truly delicate jewelry work. There is only one way out - to make a jigsaw. If you have hands and a bright head on your shoulders, then you can do this task.

There are several options for making such a tool: upgrading a purchased model or making it from improvised means. There are two types of jigsaws for wood: manual and electric. Hand tool– this is a classic.

Making from a sewing machine

• old-style sewing machine;
• file

Drawing diagram of a homemade jigsaw.

1. After unscrewing the bolts, the needle is carefully removed.
2. The drive shaft is removed.
3. The protective panel is unscrewed.
4. The hole for the needle expands to the size of the prepared file.
5. The length of the file is trimmed to the size of the needle.
6. The top and bottom of the file are ground off.
7. The file is inserted in place of the needle.

Materials for tabletop jigsaw:

1. You need to make a frame from a duralumin pipe.
2. When making it, do not forget about the need for a channel in order to subsequently lay the power cord.
3. Making a C-shaped frame from a copper sheet. Next, it is attached with screws to the frame in the place where it connects to the handle of the tool.
4. A gap is cut in the plastic. A file passes through it. You will need a drill to cut the hole.
5. Mounting holes are drilled on the plastic.
6. The jigsaw is attached to a plastic base so that the file passes through the gap.
7. The structure is attached to the table using clamps.

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The jigsaw consists of a motor and a rocker with a saw.

Motors from washing and sewing machines can be used for the motor. The body is made of plywood. It includes the base itself and the table. The box should be located between the base and the table, and on inside shelf-bracket and intermediate shaft. And on the reverse side there is a disk and a rocking chair.

The eccentric is connected to the rocker using a rod. The rod is made of steel plate. It's all connected with screws. The intermediate shaft should be installed on several bearings; they are covered with a lid to prevent dirt and sawdust from entering. The double-strand pulley is placed on the shaft and secured with screws. The eccentric of the jigsaw is also installed. Four holes are drilled on the eccentric flange. Thanks to this, the stepped screw will change position. Accordingly, the amplitude of the swing will change. A rocker is a wooden rocker in which you need to install a screw. And on the front side of the structure there are metal plates with hinges, with the help of which the files are attached. The file is placed in the slot of the work table and clamped tightly.

Rocker arms oscillate frequently and violently during operation, and the plates are subjected to excessive heavy loads. Therefore, it is necessary to pay due attention correct fastening saws. The plates must fit securely into the slots and be tightly tightened. But the earrings that hold the files are installed in such a way that the screws do not clamp the halves too tightly.

Main characteristics of household jigsaws.

The axis should get a little freedom. The screw that tightens the rocker arm must have a small gap for the thrust screw. The rocking stand itself can be made from a block. A groove is made on the upper side of the block for the upper rocker arm. The stand can be made from halves or made into composite parts.

These are the homemade items you can make with your own hands. There are different jigsaws for wood, but you won’t find a better one than the one you make yourself. Such a tool will serve you faithfully for many years. This is a real help for the home craftsman. There is so much you can do using this simple unit. But still, this device can be dangerous, so before you start working, you should familiarize yourself with the rules for using the tool.

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Safety precautions when working with a jigsaw on wood

1. Don't forget about a protective suit, goggles and, of course, a respirator.
2. Do not overload the tool, this will cause a drop in speed.
3. Do not leave the device plugged in unattended.
4. Do not put the jigsaw down until it has come to a complete stop.
5. It is forbidden to work with a faulty tool.
6. Under no circumstances should the material be held in your hands. It must be securely fastened.

Tips for working with a homemade jigsaw:

1. It is necessary to carefully monitor the condition of the files. Dull saw blades do their job poorly and poorly and put a harmful load on the drive.
2. If it is necessary to make straight cuts, use saw blades with wide canvas, this gives a perfectly even cut.
3. As a result of pressing on the tool, the blade will overheat and inevitably become dull. You need to work smoothly and carefully.
4. When cutting soft metals, wipe the blade with machine oil.
5. When working with wood, use maximum speed.
6. Keep an eye on the instrument and its technical condition.

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A few words in conclusion

Working with wood will bring you a lot of pleasure and joy. Wonderful things are made from this material. You can make wonderful gifts and souvenirs for friends and relatives with your own hands.

If you have never used a jigsaw on wood, then be sure to test your strength. This skill will be useful to everyone home handyman. After all, this tool makes not only various openwork decorative crafts, it is also indispensable during construction and repair work. This is a universal tool in the workshop. A jigsaw effectively cuts not only wood, but also plastic, drywall, laminate, ceramic tile and even metal sheets. Ease of use makes it an optimal cutting tool.

A jigsaw from a sewing machine, or use whatever is at hand and don’t look for anything else

here's something else I dug up -

The idea of ​​making a jigsaw came to me many years ago, but I brought it to life much later - when someone discarded a faulty sewing machine produced by a Podolsk plant fell into my hands.

From the “insides” of the machine, I took only the main shaft and the “needle bar” assembly, and dismantled the remaining parts. I also cut off the front part of the platform, leaving only the thrust bearing under the L-shaped body stand. I sanded down all the ridges on the bottom surface. I drilled holes in the corners of the thrust bearing and through them I attached the inverted machine to the table top of the cabinet from below. By the way, I also used a cabinet from an old foot-operated sewing machine. True, finding such a cabinet is perhaps more difficult than the machine itself. But it is not difficult to make it from a 20 mm thick chipboard. On top of the lid I covered it with a steel sheet 1.5 mm thick (can also be made of duralumin).

A pulley with a diameter of 80 mm for a V-belt drive was installed on the protruding end of the main shaft (you can also take it from an old foot sewing machine, you just need to bore it for a V-belt). A similar pulley, but with a larger diameter (100 mm), was installed on the electric motor shaft. Electric motor - single-phase (220 B) with a power of 180 W and a speed of 1350 per minute, together with a pulley, used from an old washing machine
The electric motor was mounted on the lower platform of the stand, which was made from fairly strong bakelite plywood 20 mm thick, since there was no floor in the stand itself. In the platform, I previously cut out oblong grooves through the holes in the legs of the electric motor to move the motor in order to tension the drive belt. The sawing unit is difficult to manufacture and requires some experience in working with metal. But it does not require precision (particularly precise) execution, so its parts, right down to the saw, can also be made by yourself.

The sawing unit is shown in the figure. A mandrel with a slot made of a hexagon is put on the needle bar, which is fixed with locking screws. A file is inserted into the slot of the mandrel, onto the shoulders of which a washer with a slot-like hole and a groove is first put on. The washer with its groove rests on the shoulders of the file. Then the union nut is put on and carefully tightened so that during operation the file did not break, a thrust roller assembly is provided. To do this, a hole measuring 65 × 13 mm is sawed in the lid. Above this hole, a plate is symmetrically fastened to the cover with countersunk screws. Below it, a roller holder is installed. It is fixed with countersunk screws and a plate with two threaded holes. A roller made of steel is installed in the slot of the roller holder and secured with a rivet-axis with a diameter of 3 mm. The plate must be installed flush with the surface of the lid, so you need to select a recess for the plate with a chisel.

The file is made of carbon steel, if there is no purchased one The teeth are cut with a small file and needle files of the same shape as longitudinal hacksaws The teeth must be set, but since they are very small, it is almost impossible to use a special tool for this purpose Therefore, the saw blade must be clamped into small a vice, then with a beard and a hammer, light bending blows should be applied through the tooth. Then the file is turned over and the remaining teeth are bent in the same way. After sharpening, the teeth must be hardened.

It is more convenient and more productive to work with such a stationary jigsaw than with a manual electric jigsaw, especially with small workpieces. And the quality, in my opinion, is much higher.

Diagram and drawings of a jigsaw lobzik_stanok-1.jpeg lobzik_stanok-2.jpg

Attached images

#6 Vasya Nikonenko

• City: Brusiliv
• Name: Vasya Nikonenko

A jigsaw from a sewing machine, or use whatever is at hand and don’t look for anything else

deep in the soul - a tyrant

• City: Novosibirsk (Narodnaya-Ippodromskaya)
• Name: Andrey

A jigsaw from a sewing machine, or use whatever is at hand and don’t look for anything else

#8 Sergey Viktorovich

A jigsaw from a sewing machine, or use whatever is at hand and don’t look for anything else

A jigsaw from a sewing machine, or use whatever is at hand and don’t look for anything else

put the jigsaw upside down

the most reasonable, and compact, plus there is a swing of the file, I adapted my own fiolent, plus, it’s easy to remove for other work. And if you do it, then with a rocker arm under a thin file, then you can cut it out.

#10 Vasya Nikonenko

• City: Brusiliv
• Name: Vasya Nikonenko

A jigsaw from a sewing machine, or use whatever is at hand and don’t look for anything else

Eh Vasya, Vasya. But what about the wood turner?

What about a lathe, a lathe is being built.

You can put a regular jigsaw upside down.

It's possible, but not an option for me

A jigsaw from a sewing machine, or use whatever is at hand and don’t look for anything else

Previously, they used compressors from a refrigerator. The main thing is to disassemble it carefully. But it lags behind in terms of convenience with a manual one. But if you do it manually, it’s better to buy it; it’s very difficult to do it yourself.
You can also make a ribbon, it’s better than a stationary jigsaw.

• City Ufa
• Name: Dmitry

A jigsaw from a sewing machine, or use whatever is at hand and don’t look for anything else

Vasya Nikonenko. Don't take on everything at once. Either you’ll get tired of finishing what you started, or you’ll give it all up. Well, you will have the wrong experience and it will be difficult to work in the future due to the dispersion of energy on unnecessary things.

And anything can be done that does not contradict the laws of physics. The question is whether this should be done

Making a jigsaw with your own hands or how to automate the work process?

Many DIYers at home use a jigsaw. The variety of these instruments is great. There are both hand and power tools to choose from, allowing you to make a variety of crafts. But, if there is no desire or opportunity to buy a jigsaw, then is it possible to make DIY jigsaw. The answer is yes, and in more than one way. In this article we will look at options for homemade jigsaws for home use.

1. Making a jigsaw from a sewing machine
2. DIY jigsaw from a desk
3. Buy or make it yourself?

Making a jigsaw from a sewing machine

Many people inherited hand or foot sewing machines from their grandmother. No one will use them for their intended purpose, but it’s a shame to throw them away. But it can be used to make an excellent hand jigsaw for cutting plywood, plastic and balsa. Additional material For the rework, only a jigsaw file will serve, and the whole job will take no more than twenty minutes. It will be beneficial for all those who like to make things with their own hands. The conversion process is as follows:

• The thread weaving mechanism is removed. It is located at the bottom and can be removed by unscrewing two bolts;
• The cotter pin is knocked out and the drive shaft of the thread weaving mechanism is removed;
• The panel that protects the mechanisms is unscrewed, and the slot in which the needle goes is expanded to the size of a file;
• The file is being prepared. To do this, it is cut so that the length is like that of a needle. The upper teeth are ground off with a file, and the lower part of the file is ground off to the tip;
• The file is inserted into the needle holder.

Note. If we take as a basis electric machine, then you can make a jigsaw using the same scheme. After this, you need to turn the sewing machine wheel and make sure that the saw does not come into contact with the foot and the panel, that the plywood passes freely, and that the mechanism is working properly. This completes the conversion. Now you have a homemade jigsaw, which is quite suitable for most jobs.

DIY jigsaw from a desk

Another option, how to make a jigsaw with your own hands, is a little more complicated than the previous one, but it is also more practical and convenient. To do this, you will need an electric jigsaw, which will make the work as easy as possible. To build the machine you need: any old desk, a jigsaw (will serve as a power unit), a manual jigsaw and plywood (for making arcs and rods).

Note! As power unit You can use absolutely any model of electric jigsaw.

The process begins with the manufacture of a “swing”, which at one end will be connected to the mechanism electric tool, and the other - to hold the file. The jigsaw is attached with self-tapping screws under the table cover. Made in the lid round hole so that the file moves freely in it and dust and shavings do not get stuck. The swing is installed above the power tool, and a saw is fixed between them.

One end is attached to the jigsaw, and the other is attached to a wheel at the end of the swing. The start pedal operation is very simple. To do this from metal plate a product is formed with a hook at one end and a fastening at the other. The hook is placed directly on the start button of the tool, and the other end is attached to a wooden plank that will serve as a pedal.

Buy or make it yourself?

Homemade jigsaws can be made using the most different ways and different in design. The most common is the conversion of an electric saw into a machine for work. This is quite simple to do; its design is similar to that described above. But it is always necessary to take into account what material (thickness, dimensions) will be processed. If these are thick materials, then you need to calculate the working space so that they fit there. This point is also important in terms of choosing a file.

Important! If you are counting on large volumes of work, then homemade machine will be ineffective for you.

The designs of homemade machines range from the simplest to the very complex. The advice I would like to give: do not invent overly complex mechanisms, because this will take a lot of your time and require considerable investment, so homemade apparatus loses all meaning. If you need a professional, powerful tool, then it is better to buy it right away. And for simple home crafts and simple tasks, even the simplest machine will be enough.

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