How to make a homemade manual jigsaw. Jigsaw machine - do-it-yourself options. Average characteristics of factory machines

04.03.2020

Cutting small pieces of wood is done with a jigsaw. The device is small in size and usually has an electric drive. Factory models differ in their characteristics and cost. For small volumes of wood processing, it makes sense to make a jigsaw machine yourself, using improvised materials. This requires a few factory parts.

A factory-made jigsaw is reliable device, the operation of which is guaranteed by the manufacturer. Manual models are low cost. Stationary devices are expensive, but provide proper comfort when processing wood. The set of components in the device is largely the same for everyone.

The design consists of the following parts:

The part to be processed is placed on the work table. The size of the workpiece depends on its dimensions. Some models have Rotary table, which makes working with the part easier - visibility improves. The presence of graduations makes it easier to mark the material.

Average characteristics of factory machines:

Models for specialized purposes may have radically different characteristics. There are no specifications large sizes, for processing small parts. As well as models of large sizes, the industry also produces them for retail sales. But such options will be very expensive.

In the middle class there is high competition for consumers, so the devices will be cheaper. The characteristics are also tailored to typical tasks carpenter Based on them, you need to make drawings of a jigsaw machine with your own hands. Complex components for it are purchased in the store.

Experts classify jigsaws by type of design. The design features of the mechanism determine the processing capabilities of wooden products.

The classification is carried out depending on the design of the jigsaws.

Device types:

With lower support.
Double-support.
On a pendant.
With degree scale and stop.
Universal.

Models with lower caliper received maximum spread. The frame of the desktop factory device has 2 halves - lower and upper. The sawing and chip cleaning model is located on the top of the bed.

The lower frame contains a controller, an electric motor, a final drive, and an on/off button. This machine allows you to work with any materials and any size.

The presence of two supports in a jigsaw is advantageous in that the upper half of the bed has an additional rail. This jigsaw is ideal for cutting small parts. The thickness of the workpieces on both models should not exceed 8 cm. The worktable of such machines, as a rule, can be adjusted in height and angle of inclination.

Suspended devices do not have a fixed frame, but are distinguished by their mobility. The material being processed is set motionless, and the master moves the working module. since the latter is attached to the ceiling, the thickness of the material is not limited. The tool is moved manually, regardless of the bed. This allows you to make patterns complex shape.

The presence of a scale of degrees and stops is suitable for those craftsmen who carry out processing according to the drawings. Marking allows you to avoid errors when working. On the market there is universal models machines that allow you to perform several operations. This machine allows you to perform drilling, cutting, polishing and grinding. The cost of such devices will be much higher, but working with them will be more comfortable. These are industrial specimens.

Designs and drawings of options presented on the network homemade jigsaw are different. This is due to the imagination of the authors and the desire to make a device that will stand out from the rest. Only the concept is the same in most cases - they take a manual jigsaw as a basis and repurpose it.

Home woodworking enthusiasts often look for information on how to make a jigsaw with their own hands without any special skills. You can use a ready-made manual jigsaw as a base. The mechanism does not require careful modification. Factory handheld device- this is the drive. But the crank mechanism will have to be developed independently. Manufacturers are trying to offer consumers platforms for quick remodeling, but personal needs can only be satisfied with their product.

Assembly order:

A support table is made. A sheet of metal is taken as a material and a hole is made in it. The shape is oblong, 3-4 times wider than the saw blade. Holes for fasteners are made nearby.
The factory device is fixed at the bottom of the support table. Holes for fasteners are made next to the hole for the saw blade. Countersunk head screws are used as fasteners. This is necessary in order to ensure a perfectly flat plane of the table. Otherwise, the processed products will cling to the caps of the wines, which will cause inconvenience in work.
The structure is fixed on a wooden table.

The advantage of creating a jigsaw machine with your own hands is that the factory tool can be disconnected at any time. When needed - in the hands of an ordinary one manual jigsaw. Therefore it is better to purchase manual option a tool that can be used on a homemade machine - it’s cheaper. Stationary devices are expensive.

Comfortable work with wooden products can be achieved by installing guide rails on a homemade support table. Additionally, markings are applied to the table, which makes it easier to measure distances on parts during processing.

Jigsaw manual type as the main device for the machine has disadvantages. The main problem is the file - it is too wide in manual models. Because of this, fine woodwork is difficult to perform with it - the curvature of the lines is limited.

The previous design is simple and does not have additional parts that make working with wood easier. The direction of modernization is the possibility of replacing the file with a thin one.

Options for improving the design:

Build a rocker. The structure will be tensioned by springs on one side. The second side of the rocker is fixed to the file.
Secure the file between two rollers. They serve as guides for the thin file.
A stationary factory device is used as a drive for a system of two rocker arms. A file is pulled between the latter. The movement is transmitted from the factory device to the lower beam of the saw.

Design upon purchase or self-production you have to choose based on personal preferences and desire to tinker with technology. Using guide rollers is a less popular option - its reliability is poor.

Modernization by installing rocker arms is common. It is better that the factory device only serves as a drive for the jigsaw file. To do this, you need to turn off the pendulum stroke in the tool.

The heir to a grandparent's estate often gets an old sewing machine. It has already served its purpose for sewing clothes, since more precise equipment is now being produced. If you don’t have a jigsaw on your household, you don’t have to spend money on buying one. It is made with your own hands from sewing machine.

Procedure:

Now the jigsaw for figured sawing ready for plywood. It will be more difficult to work with a manual drive because your legs will get tired. An additional disadvantage will be vibrations from force on the tool. The electric drive of the machine, converted into a jigsaw, partially solves the problem of vibrations.

An expensive jigsaw can be replaced with a design self-made. It will not be inferior in quality and functionality if you approach the assembly process responsibly. It is important to make high-quality plywood mechanisms that serve as a support table. It is desirable that the table be able to rotate. For the version with a sewing machine, this will not be possible. If desired, markings are applied to the table to make it easier to measure parts during work.

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 high-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

Necessary materials:

old-style sewing machine;
file

Sequencing:

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

Materials for tabletop jigsaw:

duralumin pipe;
copper sheet;
plastic;
drill;
clamps

Sequencing:

You need to make a frame from a duralumin pipe.
When making it, do not forget about the need for a channel in order to subsequently lay the power cord.
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.
A gap is cut in the plastic. A file passes through it. You will need a drill to cut the hole.
Mounting holes are drilled on the plastic.
The jigsaw is attached to a plastic base so that the file passes through the gap.
The structure is attached to the table using clamps.

Return to contents

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

Motors from washing and washing machines can be used for the motor. sewing machine. 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 with 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 metal plates, with hinges, with their help 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.

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 better than that that you make with your own hands cannot be found. Such a tool will serve you faithfully for many years. This is a real help for home handyman. 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.

Manual power tool very popular both among amateurs and among professionals due to its obvious advantages, namely:

comparative cheapness and availability;
compactness;
mobility.

Reverse side of these unconditional advantages is the presence of such shortcomings, How:

relatively small continuous operation time;
small achievable accuracy;
insufficient quality of processing.

Obviously, these shortcomings are free professional stationary solutions - machines and machines on massive frames. As a result, they are quite not cheap, but the main thing is that they need to be placed somewhere. What to do if it is not possible to equip workshop, but I want to improve quality works? This question is asked by many of those who are passionate about a serious hobby, and even just beginners. masters

In our article we will talk about decision, allowing to eliminate known shortcomings manual jigsaw.

Advantages of a tabletop jigsaw

The general ones discussed above flaws hand power tools fully inherent and jigsaw.

Its main advantage is mobility – involves exclusively manual movements and fixation tool. That is, in reality it turns out that:

Very difficult to do smooth, a clear cut: the slightest extra movement - and a visible flaw appears in the cutting line. Those included in the kit guides do not save due to their insufficient rigidity;
Corner tilt The saw blade in relation to the workpiece is actually not controlled in any way. And even in the simplest case straight cut when the canvas perpendicular jigsaw sole, the result may disappoint. There are at least two reasons:
- Saw blade – elastic and can bend during the cutting process, the free edge of the file is not limited by anything;
- On affordable (read: cheap) models, it’s quite often ideal direct the angle between the file and the sole is difficult reach due to the very design of the cheap stamped grounds.

Interesting Mark, what, say, American craftsmen use manual a jigsaw is quite rare. For example, when you need cut opening in the kitchen countertop for installation sinks In other cases, they prefer to use stationary band saws of various sizes. Such saws are completely devoid of some disadvantages (mentioned above), and are fully endowed with others: dimensions, weight and... price.

To summarize above, we can confidently conclude that, in some way securing jigsaw on the desktop, you can to a certain extent win some of its shortcomings. And if you provide guides rollers for free edge canvases files, you can get a completely even cut. And clean - at correct selection the file itself.

Therefore, special jigsaw table will significantly improve the quality of work with this tool.

Of course, you shouldn’t think that in this way you can get “cheaply” full-fledged tape saw. But more on that a little later, now – briefly about what will be needed for production.

Materials and tools

Materials can be used from those available at hand. I would just like to note that the working surface(“countertop”) must be level and sufficiently tough, Therefore, when choosing a material, you need to keep the following points in mind:

Can be used plywood, however, thin (less than 12 mm) plywood is susceptible to warping, and it’s not a fact that the existing piece will be quite even.
Waterproof would be preferable laminated(“formwork”) plywood thickness from 12 mm.
If we talk about (chipboards), then in general, the thicker they are, the better - the more rigid. Ideally - a piece quality laminated kitchen table tops or "post-forming".
Disadvantages: less reliability fastenings tool, you need to take a more responsible approach to the choice of fasteners.
From advantages, perhaps the main thing is accessibility and simplicity: you can order all set parts according to their dimensions in any furniture workshop. Thickness It’s better to take not the standard 16 mm, but a larger one (for example, 22 mm).
Metal its properties are almost perfect, but in everyday life it is quite difficult to find a piece of suitable size, polished and smooth. Besides, do in it required holes somewhat more labor intensive, then it is wise to use drilling machine.

Set of necessary tool will depend on the selected materials, but in general it is approximate scroll something like this:

pencil, roulette or a ruler, a carpenter's square - for marking;
square will also be useful at the stage final assembly and settings;
screwdrivers and nuts keys according to the selected fastener;
screwdriver or drill, drills for fasteners, self-tapping screws (screws).

In addition, you will need rectangular metal bracket, two identical bearing and fasteners. Actually myself jigsaw will also come in handy.

Manufacturing stages

Regardless of the chosen material necessary:

manufacture base and connect with work surface with holes for attaching the tool sole;
make a system brackets for the upper saw blade guide;
collect and adjust table.

Base and work surface

Dimensions grounds are selected based on dimensions available jigsaw and are indicated approximately.
The dimensions of the working surface are also indicated approximately, from the bracket mounting side it mounted flush with the base, on the other three sides made small projection for ease of fastening rigging(clamps, stops, etc.).

Device bracket with guide bearings is clear from the figure.
Sizes can be chosen individually, but some Necessarily need to be kept in mind.

which limit the movement of the file to the side, you need pick up based on the size of the files you plan to use. Width the bearing itself (in reference books it is indicated by the letter IN) must not be larger than the width files, so as not to dull its teeth.

So, for example, if width metal file blades (T123X, T118A) usually more than 5 mm, then they will be suitable bearings with size B 4–5 mm, for example:

Wherein prefer follows the model with the letters ZZ, 2RS as the most protected from exposure to dust, which will certainly occur during the cutting process.

Saw blades tree, on the contrary, they can be narrow (T244D about 3.5 mm) and very narrow (T119BO about 3 mm, which can be used in our case). As an option - bearing 100093 (aka 693, 3 x 8 x 3 mm).

Selected bearing fastener: M3 or M4 screws, nuts (preferably “self-locking” with nylon insert that prevents spontaneous unscrewing).

Distance between axes bearings are also calculated based on the size of the files, thickness canvases may be within from 0.9 to 1.7 mm.

For example, thickness blade T244D is 1.25 mm, and T123X, T118A - 1 mm. It is better to round in big side.

Assembly and adjustment

Bracket can be secure in the following way

This method of fastening will make it possible adjust and the height of the guide bearings in accordance with the length of the saw, and (using a square) perpendicularity the saw itself relative to the work table.

As mentioned above, you shouldn’t delude yourself - even though it’s no longer easy jigsaw, but still not a band saw. Here are some tips:

- IN band saw movement saw blade happens only in one direction - top down, due to which the workpiece is pressed against the table by cutting forces.
  It is not possible for the workpiece to explode upward, since the pendulum of the jigsaw moves and returnable movement.
  Therefore, the workpiece needs to be well press to the working surface of the table and the most important thing is to feed (move) the workpiece as much as possible slower.

Note! More revs and less feed are much better than the other way around.

When working with a jigsaw (with or without a table) it is useful to remember that move jigsaw files are usually about 15–20 mm, You need to read this value for your instrument in the instructions or determine it yourself. Material thicker than this size should only be sawed with divorce teeth Otherwise shavings will not be completely removed, which can lead to overheating and jamming of the canvas.
Between the working surface of the table and sole jigsaw can lay a sheet of dense rubber, Having previously made a cut for the file. Assemble the table and let the canvas work a little idle, so that the canvas “grinds” to the slot in the rubber. This will protect moving components of an inverted jigsaw from large number sawdust, for which it is not designed, because in normal mode the tool designers clearly did not count on such a number of them.
Protective glasses - necessary. You also need to organize the device to be turned on via pedal or provide another way instant turning off the tool. But this is a topic for another article.
Do not be afraid creatively think and improve your tools, because any idea - just a starting point for creativity, and universal there are no solutions.

For more information on making a jigsaw table, see video:

I didn’t want to permanently place my expensive Makita jigsaw on the table, so I decided to buy another one to create a table. I was very lucky to find a jigsaw in the “Our House” store Caliber LEM-610E for only 862 rub. Includes: wood saw, side stop, adapter for vacuum cleaner, spare brushes for the motor.

There was an outlet next to the display case and I looked at it in action. It is quite well made, convenient, there is a speed control with a wheel, and the activation is fixed with a button. The saw holder moves smoothly without any play.

It’s very fortunate that I was able to twirl it in my hands before buying it; I wouldn’t risk ordering it from the Vseistrumenty.ru website without knowing what it is. (Although they write good reviews about it) By the way, it costs more there and there is also a delivery fee... so I successfully bought it at Our House. :)

Despite its advantages, it has a number of disadvantages that I noticed upon closer examination:

1) The file does not fit into the saw holder. Apparently this is a defective copy, but I did not waste my time on the exchange. Each file has to be sharpened. (Although I won’t be able to use them on the second jigsaw after grinding - it doesn’t matter, they are relatively inexpensive)
2) And this drawback is visible even in the picture. The canvas is tilted strongly forward. (This was also corrected by placing tin strips under the back of the sole, achieving 90 o.
3) The speed control wheel turns heavily, not very clearly and with jamming. On minimum value speed, the tool cannot start at all (However, the same bullshit with starting is with my other “calibrated” drills. This is unpleasant, but does not spoil life much)

As always, everything is in the spirit of minimalism. I did not make a separate switch. It is quite convenient to turn on with a standard button and lock into place.

To do this, I bought a bracket at KrepMarket (this is a fastening element from some kind of system iron structures)

By the way, I really love CrepeMarket. Any screws, nuts, screws, fasteners. Every time I design something, I wander around in thought and type the necessary details.

I cut off the excess and sharpened it.

Back view. Now the distance between the bearings has a fixed clearance for the file of 1.2mm. I have a plan for the future: to make a gap adjustment.

For thin materials can be lowered below.

As an experiment, I drew a star and tried to cut it out evenly

For a file 130mm - maximum possible thickness it turns out 5cm. It turns out there are very long files; I recently saw a 300mm file on the market

I sawed off a 1.5mm slice from a 40x40mm block

Which is what I did. Now you can use it to cut long workpieces 11.5 cm wide. The old L-shaped structure also remains, and if greater strength of the holder is needed, it can be installed again, although new design remained quite strong and reliable.

I also came up with the idea of making a knife from an old dull file, grinding off its teeth and sharpening it.

They can be used to cut material like sealant into shapes. The cut is smooth. Much better than stationery knife. The photo shows a mouse pad.

Well, that's probably all. The table turned out to be reliable and comfortable. Now I have a tool with which I can perform more delicate work than with a circular saw.

For figured cutting on wood, a hand jigsaw was traditionally used - a simple tool with a thin file that allows you to create elegant patterns from wood. Later, a jigsaw machine was invented, working on muscular traction, like a foot-operated sewing machine or a potter's wheel.

The development of technology and the emergence of compact low-power electric motors led to the creation manual jigsaw, and then the corresponding electrified machine, which you can make yourself.

Purpose

Stationary units that ensure vertical movement of the saw blade allow you to cut from sheet materials parts of complex shapes, elements with curved edges. If you insert a file into a through hole drilled in a workpiece, you can make a shaped contour inside the product.

Using jigsaw machines, workpieces from various sheet materials are processed, including:

solid wood;
plywood;
wood-containing boards (chipboard, fiberboard, MDF);
aluminum;
plastic.

Using a jigsaw machine, you can increase labor productivity and significantly improve the quality of processing of shaped edges of products. This is explained by the fact that the working person has both hands free and can position the workpiece as accurately as possible relative to the moving cutting blade. This is the main advantage stationary tool With electric drive from a manual jigsaw.

Jigsaw machines are installed in school and home workshops, as well this type equipment used in furniture production and during production musical instruments. Modern laser machines can be used instead of jigsaws, since they provide highest precision cutting along a given contour, but their use limits the effect of the burnt ends of the parts.

Device

The tabletop jigsaw machine consists of the following elements:

bed ( supporting structure, on which all mechanisms and components are mounted);
Desktop;
electric drive;
crank mechanism (responsible for converting the rotation of the engine shaft into reciprocating movement of the saw);
double rocker (equipped with clamps for saw blades and a tension mechanism).

The machines produced today are mostly designed to use saw blades with a length of 200-350 mm and a working stroke of 30-50 mm. Files vary in width (2-10 mm), thickness (0.6-1.25 mm) and type of shank - they come with pins and without pins. The latter are more convenient, since to cut out the internal contour it is necessary to drill a hole in the workpiece through which the end of the file should pass. If there is a pin, the hole should be noticeably larger. Some models of jigsaw machines allow you to attach both types of files, including old-style ones, from Soviet hand tools. Files also vary in the size of the teeth and their arrangement - it can be straight or spiral.

Tool selection

To choose good machine, suitable for solution specific tasks, you need to pay attention to its power. The majority of models are equipped with an electric drive with a power of 90 to 500 W. For home use Optimal power is 150-200 W.

An important selection criterion is the presence of two operating speeds of the unit. IN standard version– 600 and 1000 rpm. This makes it possible to select the appropriate mode for working with materials of different densities.

The desktop can be fixed or rotating. Fixing the table at an angle allows you to cut material at specified angles other than 90°. There are also models that provide table height adjustment - this allows you to extend the service life of the file, since you can use different sections along its entire length for work, and not just the central part.

Manufacturers equip jigsaw machines with a variety of options, including:

a compressor to remove chips from the marking line with a stream of air;
drilling block;
illumination of the work area;
guarding the blade (will not allow your fingers to come into contact with the moving saw);
clamping device (prevents vibration of sheet material of small thickness).

Additional options increase the cost of the jigsaw, but do not fundamentally affect its functionality.

Manufacturers

The power tools market includes different kinds jigsaw machines: from devices designed for creative work at home to high-performance models designed for professional use. In addition to machines that use regular saws, you can find band jigsaws on sale.

The list of popular brands includes Bosch, Hegner, Einhell, Proxxon, Makita, DeWALT, JET, Xendoll, Excalibur, Kroton, Korvet, Zubr.

The leaders in quality and reliability are the products of famous German brands Bosch, Einhell and Hegner. In addition, the lines of jigsaw machines include a wide range of models of varying power and configuration, which makes it possible to choose high-quality electric jigsaw for the home, optimal in functionality.

Budget models, including made in China, also performed well. Models of the Korvet, Zubr and other brands are suitable for home use without increased loads.

Before purchasing a jigsaw machine, regardless of its brand, you should definitely conduct tests to evaluate the smooth running of the working body and the noise level, to ensure that there is no extraneous sounds and vibrations. It is recommended to compare several models different brands and purchase the option with the best performance.

Making a jigsaw with your own hands

A homemade machine, made to replace a conventional jigsaw for wood, is capable of providing high-quality execution basic set of operations for figure cutting sheet materials. Depending on the purpose, you can design a compact electric model or a stationary unit designed for high loads.

Materials

As basic circuit It’s most convenient to use a drawing of a simple wooden jigsaw with a flywheel and pedal assembly and replace the mechanical drive with an electric one. If the machine is intended to be used only occasionally, you can do without a special electric motor. Instead, connect any suitable power tool. It is convenient to use a screwdriver with adjustable rotation speed.

The material used to manufacture the machine itself is wood, and:

It is better to make the frame and the supporting pedestal for the lever rod from high-strength plywood ( minimum thickness– 18 mm);
for a lever structure, you need to take dense wood that is not prone to cracking under load - beech or oak (instead of buying bars, you can use straight legs of old chairs of suitable size);
for the crank mechanism, plywood with a thickness of 10-12 mm is required;
For the remaining elements of the structure, pine lumber and various trimmings are suitable.

According to the jigsaw machine diagram, a bed and a supporting pedestal are made. Wood screws should be used as fastening elements, joints wooden elements It is recommended to coat the structures with PVA emulsion. It is important that the structure is strong and there is no play, otherwise the accuracy of the machine will be low.

Parts preparation and assembly

Next, the levers of the required length are cut out, and cuts are made at their ends for fastening the saw. The mount is made of a steel plate 2-3 mm thick, with a pair of holes. The upper hole allows you to fix the plate on the lever, and the lower one is intended for attaching the shank of the file. Fastening elements - screws of suitable diameter and nuts - are more convenient to use wing nuts. The mount is installed on the lower arm in the same way.

At the next stage, the lever system is mounted on the frame. To connect the free ends of the levers, a screw tie (lanyard) is used, which makes it possible to easily adjust the tension of the saw blade.

Note! The length of the files used should be determined in advance, since the size of the lever mechanism depends on this. It is necessary to ensure that the levers are as parallel as possible relative to each other.

The racks need to be fastened together to create a strong support for the flywheel. The axis can be a pin or a bolt of at least strength class 8. The flywheel is connected to the lower lever by means of a connecting rod made of the same plywood, while the rods connecting to the lever must be metal.

At the next stage, a work table with a rotating mechanism is made - a rotating arc with a slot must be cut out of plywood. The table is installed on the bed. For easy fixation swivel mechanism V in the right position, use a wing nut.

In this model, the electric drive is a screwdriver - to operate it, just connect its chuck to the flywheel axis. You can regulate the speed using a variable-force clamp made of a durable strap and a small clamp (or other screw tightening).

Simple in design homemade machine convenient to use.

Robust stationary design

Design of a jigsaw machine for professional use practically no different from the compact one wooden model. It is only important to choose the right materials so that the unit is able to withstand increased loads and did not vibrate during operation.

bed – heavy chipboard;
stand for a lever structure - hardboard, textolite of suitable thickness;
levers – steel square pipe;
table top - any durable, hard and smooth material.

Elements for fastening the blade (can be taken from an old hacksaw) are soldered to the levers or secured with screws.

You will need a working electric drive with a gearbox that will provide the necessary torque. To start the engine of a homemade jigsaw machine, it is convenient to provide a foot pedal (taken from an old electric sewing machine or made using any suitable electric button).

When assembling the structure, metal stands and metal fasteners are used. Using a metal insert, you can strengthen the fastening of the connecting rod. This will reduce vibrations and reduce wear.

The tabletop has a long working slot to allow rotation around the longitudinal axis.

A spring is provided to tension the web. The lower lever is responsible for the movement of the working blade, the upper one helps to hold the file in a vertical position.

Thus, an electric jigsaw can be assembled on your own using available materials. This will not require serious financial expenses, but will only take certain time to search for materials, necessary details and assembly.