Making a jigsaw with your own hands. Jigsaw from a sewing machine Jigsaw from a sewing machine
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Perhaps you have an old sewing machine lying around and covered with dust.
In this article, the author YouTube channel"Vladimir Natynchik" will tell you how to make a completely suitable and functional electric jigsaw from it.
This homemade machine will not require in the manufacture of turning work. All you need are screwdrivers and wrenches.
Materials.
- Old electric sewing machine
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- Spray paint blue metallic
- Sheet plywood
- Bolts, nuts, washers M6
- Second glue, soda
- A pair of bearings, like these
Tools used by the author.
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- Hacksaw
- Wrenches, screwdriver
-, wood drills.
Manufacturing process.
So, Vladimir found an old seagull sewing machine.
To make a machine out of it, you will have to remove the fabric feed mechanism and rotate the bobbin. Those bolts that were not unscrewed, the master warmed up gas burner. After such a procedure, everything is very easy to understand.
At the top of the mechanism, the author made a small revision, lubricated important components, and removed the regulators.
Old electrical wiring has also been replaced.
Then the master painted all the surfaces of the machine spray paint"blue metallic".
With painting, he hurried a little, the machine needs to increase the working stroke of the rod. After all, now the plywood will be cut, and the fabric will not be sewn together. He made a lining out of 20mm plywood and screwed it between the base and the top of the machine.
In order to avoid unwinding of the bolts from vibration, the author filled them with paint.
The first check for performance and the amount of stroke of the blade.
There was a small problem. When the blade is loaded, it does not hold well on the rod, and shifts back.
In order to solve this issue, the master made a special stop from an M6 bolt and two bearings with washers laid between them.
Having made a cut in the plank, I fixed the bearings in it, and cut off the excess bolt.
On the underside of the machine, he secured the thrust mechanism with superglue and soda.
Now small tests on sawing a piece of plywood. Cuts very quickly and without chips. Well, Vladimir gave a second life to an old typewriter!
We independently remake an old sewing machine into a jigsaw.
There are many videos on the network about using old sewing machines in a new quality. To do this, in the body we leave only a crank, a vertical rod for attaching a needle, a flywheel with a groove for a belt drive. To rotate the flywheel, an electric drive for manual sewing machines is used. (A lyrical digression off topic: I purchased the drive 30 years ago to make an electric spinning wheel according to drawings from the Young Technician magazine. Wool from a white sheep was spun on the spinning wheel and a winter sweater was knitted. e. disappeared). foot pedal for speed control and the electric motor in the picture below.
The Network Roll Review recommends the use of leaf springs with the point of application of force at the center of the long spring, or a block of coil springs with precise fixation of the lower edge of the file. A long leaf spring significantly increases the overall dimensions of the device. The coil spring unit is difficult to make at home. A scheme is chosen - a short spring fixed at one end.
A piece from an old metal meter was perfect for this. The stiffness of the spring can be adjusted by setting the number (stack) of springs and moving the latch along the spring. The use of a short spring complicates the attachment of the file, because. the free end of the spring describes a curved line, respectively, and the lower end of the file will also not move strictly vertically.
The existing round hole in the spring is bored out with a needle file for a rectangular hole according to the size of the saw blade fixing unit. The result was a knot swinging along the long axis of the spring. Fixing the node from below with a segment of the rod. Fixing the saw blade with a screw. When changing the file, the knot does not fall out. the screw clamping the file does not allow from above, and from below the axis of rotation at a small angle.
The manufacture of the attachment point for the upper end of the file is not difficult and is clear from the photo.
The next feature of using sewing machines for making a jigsaw is a small stroke of the working rod - about 25 mm. For reference: the working part of purchased files is approximately 85 mm with overall length files 120 mm. It is possible to eliminate this shortcoming. To do this, the body of the machine is installed through a gasket (I have a thickness of 45 mm - three plates furniture chipboard,) Under the working rod there are three gaskets of 15 mm. As the working part of the file wears out, one gasket is removed and so on.
When using files (notched saw teeth on piano wire with a diameter of 1 mm for a length of about 30 mm), it is not necessary to remove the spacers. Since the machine is quite old and worn out, i.e. rumbles and to eliminate noise, rubber shock absorbers are fixed on the base racks. The first works - plywood material 3mm of good quality.
For a person who is used to coping with everyday problems on his own, a jigsaw is a necessity. Electric jigsaws are also good for tinkerers, for those who live in their own home and for summer residents. You can make a jigsaw with your own hands, as this model differs significantly in better side from hand tool. 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, which additionally has a ski to guide the saw blade along the surface. The jigsaw was invented by Albert Kaufman, at first only replacing the needle with a blade sewing machine with foot or electric drive. The modern jigsaw has simple design in the form of an electric motor and driving the blade simple mechanism. The front, upper part of the tool has a guide, and the lower part contains a retractable saw blade that makes cuts. At electric jigsaw there is a support platform that allows you to focus on the sawn part and work with great accuracy.
A jigsaw can cut plastic, plywood, copper, brass or steel with equal success. The functions of the jigsaw should allow it to make both straight and curved cuts on various kinds of materials without violating the external contour of the products. The fixed position of the tool allows you to make cuts high precision. Manual jigsaws do not have a tension system and guides, thanks to which the jigsaw has such a smooth and stable ride.
For cutting small parts manual jigsaw uncomfortable. Since it is quite heavy, it has to be held with one hand, while the other hand guides the workpiece. The desktop jigsaw does not have this drawback, but it is difficult to process large parts with it, and it has a considerable size. It is best to use such a jigsaw as a mini-machine for the production of small workpieces. Protozoa desktop jigsaw easy to make by hand.
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Manufacturing
The simplest model is made quite quickly, but its presence, as a rule, is enough for domestic needs. A neatly made jigsaw will not be worse than a factory-made one, but in some ways it may be able to surpass it. In order to make a jigsaw, you will need:
- manual electric jigsaw;
- heating thread;
- screws;
- plywood;
- duralumin pipes up to 12 mm in diameter;
- drill;
- clamp.
For the normal functioning of the jigsaw, there must be the following parts: a comfortable handle, a switch (most conveniently a push-button), a power cord, a heating thread.
First of all, a frame is made from a duralumin pipe, but textolite of at least 10 mm or thick plywood can also be used for the base. The lighter the frame made, the easier it will be to use the jigsaw. The frame must have a channel for the power cord. Experts believe that best form frames - one in which one of the sides is rejected by 45º.
Then, an earring is made from a millimeter thick copper sheet and fastened to the frame with screws in the place where the frame is connected to the handle. An earring, a screw and a wing nut form a clamp in which the heating thread is fixed. Pressing cheeks are made from a duralumin sheet 0.8 mm thick, and a push-button switch is located between them.
After that, a slot-like hole is cut in the plywood through which the file can pass. It is convenient to make this gap with a drill. Marking is made and holes along it, the transitions between which are smoothed. Instead of plywood, plexiglass, plastic, metal can be used. The drill then makes mounting holes on the plywood and on the base plate itself. The jigsaw on the plywood base is fixed with screws so that the file can pass through the gap. The structure is attached to a table or workbench with a clamp in such a way that the file is directed upwards. If the clamp does not fit, you can use another mount that is more suitable for a particular case. Although the file in this case remains standard, both hands are freed, due to this, the cutting possibilities are increased, so the design is functional in this form.
As a heating thread, you can use a nichrome spiral from any heater, for example, from an iron. It is fixed like a standard saw blade between the ends of the frame with a little tension. 14 V is supplied to heat the filament, and a rheostat is used to control the voltage. The current determines the length and thickness of the nichrome filament; a rheostat helps to set the optimal current strength. The strength of the current affects the temperature to which the filament is heated, if too high material heats up and may catch fire, and if insufficient, cutting will not be possible.
An optimally tuned do-it-yourself electric jigsaw will allow you to cut out figures with complex shapes.
The idea to make a jigsaw came to me many years ago, but I brought it to life much later - when someone threw out a faulty sewing machine manufactured by the Podolsk plant fell into my hands.
From the “insides” of the machine, he took only the main shaft and the “needle bar” assembly, and dismantled the rest of the parts. He cut off the front part of the platform, leaving only the thrust bearing under the L-shaped body. On the sandpaper, I grinded off all the tides on the lower surface. I drilled holes in the corners of the heel 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 the old foot 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 chipboard 20 mm thick. steel sheet 1.5 mm thick (duralumin can also be used).
On the protruding end of the main shaft, I installed a pulley with a diameter of 80 mm for a V-belt drive (you can also take it from an old foot sewing machine, only it needs to be bored out under the V-belt) I installed a similar pulley, but with a larger diameter (100 mm) on the motor shaft. C) with a power of 180 W and a speed of 1350 per minute, together with a pulley, was used from an old washing machine
The electric motor was fixed on the lower platform of the pedestal, which was made of sufficiently strong bakelitized plywood 20 mm thick, since there was no such platform-floor in the pedestal itself. In the platform, I first 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, requiring some experience in working with metal. But it does not require precision (especially precise) execution, so its parts, up to the saw, can also be done by yourself.
The sawing knot 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, on the shoulders of which a washer with a slot-like hole and a groove is first put on. union nut and carefully tightened so that the file does not break during operation, a thrust roller assembly is provided. For this, a hole with dimensions of 65 × 13 mm is sawn in the lid. Above this hole, a plate is symmetrically attached to the cover with countersunk screws. A roller holder is installed under it. It is fixed with countersunk screws and a plate with two threaded holes The roller, made of steel, is installed in the slot of the roller holder and fixed with a rivet-axle with a diameter of 3 mm. The plate must be flush with the surface of the lid, so you need to create a recess under 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 hacksaw The teeth should be set, but since they are very small, use for this purpose special tool practically impossible. Therefore, the blade of the file must be clamped in a small vise, then light bending blows should be applied through the tooth with a beard and hammer. 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 on such a stationary jigsaw than with a manual electric one, especially with small workpieces. Yes, and the quality, in my opinion, is much higher.
Scheme and drawings of a jigsaw
In the video, a jigsaw from an old sewing machine at work
Well, another option for creating a jigsaw
Hello DIY lovers, in this tutorial we will look at how to make a jigsaw machine from an old sewing machine. On such a machine, you can cut rather thick materials, of course, the machine is not intended for very accurate and accurate cutting, but the cutting quality is quite good. In fact, the sewing machine is already a ready-made jigsaw, here is a reliable assembly that turns the torque from the engine into the reciprocating movements of the saw. You just need to change the design a little and the homemade product is ready. If you are interested in the project and you need such a homemade product, I suggest studying the project in more detail!
Materials and tools used
List of materials:
- an 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.
The process of making homemade:
Step one. Preparing the sewing machine
Let's prepare the sewing machine, we need to remove all unnecessary. To begin with, we analyze lower part, unscrew the connecting rods, we need to completely remove the base from the machine.
Further, on the sewing machine in the back there are two rods, we leave the one that moves, on which the needle is attached. The other stem must be removed, it is not needed. At the same time, we lubricate all moving parts, since the loads on the sewing machine will already be larger.
Step two. Machine frame manufacturing
We make a frame for the machine, first you need to assemble a frame like that regular table, only strong. As a material we use profile pipes.
Next, you need to make a bed, that is, that part of the frame on which we will install the part from the sewing machine. The bed must be strong, as the machine will be held by only two bolts. As a material, the author uses a piece of channel. We cut off, weld the mounting ears and securely weld the channel to the frame. After that, it will be possible to fix the sewing machine on the frame.
Step three. Fastener
We make a fastener with which we will install hacksaw blades. We need round timber, we drill a hole in it for the stem of the sewing machine, as well as a hole for the mounting screw.
It remains to make a retainer for the knife, cut a slotted hole in the workpiece with a hacksaw, and then insert the 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 ensure that the saw itself does not weld.
We will clamp the canvas with two bolts, drill holes for them and cut the threads.
Step four. Emphasis
For hacksaw blade you need a stop, otherwise it will vomit when cutting. The stop must be welded to the frame. Here we need a piece of round timber, the author made a drink in it and welded it in its place. To reduce friction and increase the life of the machine, it is better to replace this part with a bearing.
Step five. Engine installation
We install the engine to understand where it should be, install the belt. The fastening part is very simple, it is a piece of sheet iron, which is welded to the frame on racks of the required length. Racks are made of thick iron plates. The engine itself is held on a clamp, it is pressed against the base, the clamp is an iron plate with two threaded studs that are welded to the base.
Step six. tabletop
We make a countertop, here we need plywood or OSB. The tabletop is simply screwed to the frame with self-tapping screws. Do not forget to make a hole for the cutting blade. After that, the machine will be almost ready, proceed to painting.
Step seven. Painting and assembly
We paint our machine, blow out everything rusting with a can, now the machine looks great. We also paint the countertop. After painting, the machine can be assembled, we fasten part of the sewing machine to the frame, and also fasten the countertop.
We install the engine, near it the author installed a capacitor with plastic ties. We also install a switch, the author has a keyboard type, it is convenient to use. We run the cable along the frame and fix it with plastic ties so that it does not interfere.
