Which is the best reciprocating saw to buy? Marking of canvases

Electric hacksaw, also known as a reciprocating saw, - universal tool, which can be used to cut almost any material, including wood.

It is similar in design to . But an electric hacksaw for wood does not need flat surface, on which the jigsaw rests. In addition, the latter cannot cope with strong and rigid materials, such as steel pipes or rebar, and a reciprocating saw high power cuts them easily. Plus, it can be used to cut building materials into hard to reach places.

The most important indicator that you need to pay attention to first when choosing is power. According to this parameter, electric hacksaws are divided into three groups.

Power from 400 to 600 W. This electric wood hacksaw can cut boards of small thickness (up to 3 cm), hardware during repairs, tree trunks and branches of small diameter. With the help of such an electric hacksaw, home craftsmen carry out carpentry and plumbing work. It is easy to use even for housewives when cleaning up the garden.

700-1000 W. This variety can also be classified as household, but it has much more possibilities. An electric hacksaw easily cuts reinforcement with a diameter of up to 22 mm, not to mention wooden products. It is necessary to pay attention that the length of the working blade is sufficient for cutting wood. Many people choose a reciprocating saw for this type of garden.

More than 1000 W. The tool can be classified as professional category, where increased load endurance of the device is required. With its help you can cut bricks, blocks from cellular concrete, thick steel blanks, not to mention wood. There is always a use for a powerful electric hacksaw in the home.

By performance we mean the time of uninterrupted operation of the reciprocating saw. Low-power models can cut wood up to 25 hours per month. In this case, after an hour of continuous use, it is recommended to stop the electric hacksaw so that it cools down. Overheating of the electric motor leads to a decrease in operating life.

Cutting speed

This indicator is determined by the reciprocating movements of the working surface. Standard characteristic is 2500-3000 rpm. It is necessary to indicate that for different materials It uses its own cutting speed, so when choosing, it is important to pay attention to whether the tool has a speed adjustment function. This important point, on which not only the speed of work depends, but also the service life of the electric hacksaw.

Pay attention! To quickly cut non-hard wood, you can set the highest speed.

And one more thing. Many manufacturers offer electric hacksaws with a pendulum movement of the blade. This function increases cutting speed, but reduces cut quality. In many models this function included on a permanent basis. And if the requirements for the quality of the cut are high, then it is better to abandon such saws in favor of those in which the pendulum stroke is activated by a separate button.

Cutting depth and stroke size

The standard cutting depth for all types is the same and equal to 200 mm. But when choosing, you need to pay attention to whether the electric wood saw has a cutting depth limiter function, which makes it possible to make cuts of small depth.

Pay attention! The essence of the limiter is that when used, the files wear out evenly and their service life is extended.

The cutting depth adjustment device can be keyed or keyless. The second option is better in terms of convenience of setting this parameter.

The technical characteristic “stroke length” determines how far maximum length The blade of the electric hacksaw extends. The larger this parameter, the faster the cutting occurs. U different models the characteristic is different, but the average value is within 30 mm.

Smooth start, blade change and tool weight

The main purpose of a soft start is to reduce the load on the electrical network when the electric wood saw is turned on. The higher the power of the tool, the more important it is to have this function. This also applies to battery models.

Quickly changing saw blades is important when working with different materials. There is a so-called keyless replacement, in which you can remove and install a new blade by simply pressing a button.

Since a reciprocating saw is a hand-held tool, its weight plays an important role in the process of use. The larger it is, the more difficult it is to use the tool when work is being carried out long time, your hands get tired faster.

Operating principle and device

The design of an electric hacksaw is quite simple and similar to the design of many power tools. It includes:

• electric motor;
• gearbox;
• a pusher that is connected to an eccentric gearbox.

The pusher converts rotational motion into reciprocating motion. Some models have a so-called pendulum stroke. His distinctive feature– raise the saw blade while moving in the opposite direction. This movement is provided by a pendulum mounted on needle bearings. The main task of the manufacturer is to fine-tune the pusher stroke.

Electric hacksaw repair

How difficult it will be to repair an electric wood saw depends on the nature of the breakdown. If, while cutting wood, the reciprocating saw stops due to the protection being activated, this may indicate dull teeth of the blade or strong pressure when feeding.

The result is a beveled cut - the prism of the guide holder is dirty, the blade is dull or it is not selected correctly.

The reason for the electric hacksaw not turning on may be damage to the cord, discharge of the batteries (in the case of battery power) or an overload, as a result of which the protection is triggered.

If the blade is fastened incorrectly or weakly, check whether the clamping screw is worn out. Perhaps you have selected a blade with an unsuitable shank for an electric hacksaw.

If you need to disassemble the saw, you need to unscrew the screws on the handle and pry off one of the plastic parts something spicy. Sometimes the screws are hidden by a casing, in which case you must first remove it by removing the attachments from the hacksaw. It is not always possible to replace gears, bushings, and bearings on your own, if only because you need to find the necessary parts. In this case, the tool is simply sent to a service center for repair.

Homemade electric hacksaw from a drill

From the principle of operation of a reciprocating saw on wood, we can conclude that the main requirement for the design of the tool is to change the rotational motion into a reciprocating motion. Many power tools only have a rotary motion. This means that in order to make a hacksaw out of them, you need to come up with an attachment that would convert rotation into movement along the axis of the cutting organ.

Nozzle

To make a reciprocating saw from a drill with your own hands, you need to order some parts made on a milling and lathe. The nozzle is a device adjusted in size. The accuracy of fitting each part to each other is important here; it cannot be assembled from scrap materials.

To make the nozzle, you need a shaft turned on a lathe. On it you need to use a file in the middle to make two oblique grooves, located mirror-like on different sides. A regular roller bearing is placed on the grooves. It is positioned relative to the shaft at an angle created by curved grooves. When the shaft rotates, the bearing will create oscillatory movements relative to the axis. It will be the part that moves the pusher from side to side.

To prevent the bearing from moving, it is fixed on both sides with bushings, which are pressed against the shaft with screws. Washers are installed between the bushings and the bearing.

The shaft requires supports. They can be made square with holes for the shaft. On the squares, holes with M6 threads are made at two opposite ends for attaching other parts:

• on one side a steel rectangular cover is installed, secured to the ends of the squares with M6 bolts;
• on the other side, two square bars are installed, which are also attached to the squares with M6 bolts. There should be space between them for the third bar, which acts as a pusher.

The pusher is primarily a block, longer than the two installed on the nozzle. Secondly, in its design, small bearings are attached to one side using bolts. Their job is to create a level of displacement of the large bearing mounted on the shaft onto the pusher. When the pusher with the nozzle is assembled, the large bearing in thickness will be located between two small ones.

The pusher itself should not be attached to anything. But to prevent it from jumping out of the nozzle when using the electric hacksaw, a cover is mounted on top of the installed bars. Here you need to understand that the lid and two outer bars are fastened to the squares with one bolt or screw for each place.

Holder

In principle, the drill attachment is ready. All that remains is to make a holder for the electric hacksaw blade. Here large number options. One of them is a square section part in which milling machine a cut is made with a thickness slightly greater than the thickness of the file. Threaded holes (usually two) are made at the ends, into which screws of the appropriate diameter are inserted. They will clamp the file.

To attach the holder to the nozzle, you can use various ways fasteners. The simplest is to make a rectangular groove in the holder on the opposite side of the cutout, and fit the protruding part of the nozzle shaft to square section. In this case, the dimensions of the shank and the dimensions of the groove must coincide with a slight increase in the latter.

To secure the shaft in the groove, you need to make a threaded hole at the ends of the holder into which the screw is inserted. It will fix the shaft in the groove and transmit reciprocating motion to it. The opposite end of the shaft, it round section, will be inserted into the drill chuck.

It is necessary to understand that a reciprocating saw from a drill is a difficult manufacturing option; it is not always possible to make the parts yourself. Assembly is simple, there is nothing complicated about it. But the nozzle is quite reliable and will withstand the loads that will be applied to it during the process of cutting materials.

Remaking a jigsaw and grinder

If desired, you can convert a jigsaw into an electric saw for gardening and carpentry work. To do this, you need to secure the saw blade to the trim metal tube about 15 cm long. WITH reverse side the tubes screw onto the plate that will be attached to the jigsaw. To guide the movement of the saw, a special auxiliary structure is made of wood. You can prepare its drawings in advance so as not to make a mistake with the dimensions.

This homemade reciprocating saw, made from an old jigsaw, works no worse than a store-bought one.

An electric hacksaw is also made from a grinder. In general, the grinder is a tool that, with the help of attachments, can perform a very wide range of operations.

In order for it to cut like an electric hacksaw, a frame is made with a pendulum hinge and a device for attaching the grinder itself. All this is installed and secured on a table made of wood or metal. In essence, it turns out to be a cutting machine.

Hi all. Let's assume that this situation occurs. You needed to saw off wooden block, but I don’t have a hacksaw at hand. There are no other options, and the work must be completed on time. This situation is familiar to many craftsmen, and today’s homemade products largely solve such problems.
This homemade product will help solve the problem of sawing using conventional drill or a screwdriver. It can be done at home without any problems. This tool is designed as an attachment for a screwdriver, which greatly expands its capabilities, but first things first.

Operating principle of the nozzle

It's very simple. the torque from a screwdriver or drill is converted into reciprocating movements using a crooked bearing. This mechanism sets the blade in motion, which is fixed at the end of the entire mechanism. The nozzle is fixed on the shaft, which in turn is tightened in the screwdriver chuck.

Making a sawing attachment

It is not possible to assemble such a device from available means, since most of it had to be turned on a lathe and milling machine. If you don’t have such machines, then it doesn’t matter, you can always negotiate with someone who has such machines.

Before starting work, you need to make a drawing of the homemade product, having first calculated the dimensions of the parts. All parts are assembled from metal, so a vice and a file are required during the assembly process.

Video on how to make a reciprocating saw with your own hands.

There is a lot that can be described, but the video clip shows the entire process of making a reciprocating saw from a drill with your own hands.

How is a reciprocating saw more effective than a jigsaw when equal value

Manufacturers persistently prove that any manual labor can be mechanized. To replace hand drills came electric drills, saws - chainsaws. What about a hacksaw? Well, here it is - a corded and cordless reciprocating saw, both for wood and aerated concrete, capable of working on concrete, metal and even stone; We’ll find out how to choose it from the article!

Reciprocating saws for metal and more - electric hacksaws as they are!

Reciprocating saws - this phrase in itself does not always evoke understanding even among experts in electrical engineering and its sellers. Surprisingly, in the West this tool is as popular as an electric drill or chainsaw; everyone knows about it and uses it in every home. It is not clear why such a saw did not please the Slavs, although, most likely, we, due to certain stereotypes and banal economy, simply cannot appreciate the instrument.

Perhaps the whole point is that we don’t have to deal with it very often - city dwellers live in concrete jungles, where dynamite is more useful than a hacksaw, and in the villages they prefer to work the old fashioned way. But It is the reciprocating saw that is closest to the hacksaw in terms of its operating principle, and, in fact, it performs its functions, only instead of muscular traction it works electric motor .

In the tool itself, everything is quite simple - a long body with an easy-to-grip handle in the shape of a familiar pistol, a trigger, several switches, a replaceable working blade - that’s the whole tool, if you don’t delve into the details. In principle, even a person who has never dealt with it will understand the operating principle of this power tool in a matter of minutes.

How to choose a reciprocating saw - tool functions

In many ways, the “saber” resembles a jigsaw, however, rather the opposite - a jigsaw resembles a reciprocating saw, because it was the one that was invented first! As in a jigsaw, the reciprocating tool makes reciprocating movements and gradually cuts down the material; in the same way, in the “saber” models there is also a pendulum function, which we will discuss below.

The difference lies in the size of the hacksaw blade, as well as in some distinctive functions that cannot be done with a jigsaw. For example, in the garden it will be much more convenient to work with a “saber” when pruning trees, and cutting metal or aerated concrete with a jigsaw will be difficult. By and large, the reciprocating unit is “omnivorous” - we changed the blade depending on the need, and we can safely saw wood, steel, stone, plastic, ceramics, glass, foam blocks! You still need to look for one like this!

It’s easier to make a list of technical professions that would not find this tool useful than to list all the professions and crafts that would be happy to have such a unit. It’s not even a matter of its functions, which at first glance can be duplicated with other tools; the layout of the products itself decides a lot.

The long blade and the special narrow, elongated design of the gearbox allow you to work in places where neither a jigsaw nor an angle grinder simply fits in; the cut can be made flush to a wall or other surface.

In addition, this tool works completely calmly in weight, regardless of the shape of the part, be it round pipes, square bars. And for pruning trees, such a tool seems to have been specially invented! Moreover, you can cut both a large branch and small wen. Maneuverability is the middle name of a reciprocating saw! She will work as the master’s hand leads her - if necessary, she will round an acute corner or cut out a part from a curved material.

The tool also performs excellently during dismantling work - it can be used to cut old parts very quickly. window frame, understands steel heating. The tool can even cut wooden surfaces With metal parts, for example, with old nails or self-tapping screws, and this, you see, is beyond the power of any jigsaw. And a very important advantage of reciprocating saws is that they are much safer than chain saws, circular saws and grinders, during operation there are no sparks, clouds of dust, scale, and no overheating of the workpiece.

Reciprocating saw - device features

Manufacturers produce reciprocating saws in different price categories, but in the general mass two types of devices can be distinguished: professional and amateur (or household). The latest models are designed for a short period of continuous operation, 3-4 hours a day. This does not mean low build quality, they are simply designed differently and need periodic “rest”, while professional tool Thanks to especially durable parts, it will work the entire shift without stopping. Of course, household models are sometimes several times cheaper.

• Power – the most important indicator for the tool. The more powerful the engine, the greater the performance, but remember that this in turn increases both the weight and dimensions of the product. Follow the rule of the “golden mean”: for household work Tools from 500 W to 900 W are suitable. Also pay attention to the number of strokes per minute - the normal indicator for comfortable work is 2.5-3 thousand strokes/min. The stroke length ranges from 19-23 mm, sometimes this figure can be adjusted.
• Speed ​​adjustment - this function is present in all saws, since cutting different materials will require different speed. There are several options for implementing this function - in the first case, a stepless method is used, when using an electronic button the operator can adjust the degree of speed by pressing the degree. The method is good, but it will require some sleight of hand.
  A more advanced option allows you to set special regime speed, and more precise adjustment is carried out by the trigger. This makes it possible, even with a full press of the button, to remain at the maximum permissible speed without exceeding it.
• The pendulum stroke is a convenient feature that increases cutting speed, reduces heating of the blade and helps remove waste from the cutting line. The essence of the pendulum stroke is that the blade, making a reverse movement, deflects slightly upward. This function is not available in all models, and it is important to note that it is not relevant in all works.
• Support shoe - with the help of the device, the operator can rest the tool against the workpiece and make a cut more smoothly and quickly. When choosing, pay attention to how movable the stop is and in what positions it is fixed. The correct shoe has many positions and is installed in a comfortable position with one press of a button or lever on the body.
• Blade replacement mechanism - modern models allow you to replace a hacksaw blade for a reciprocating saw without the use of tools, such as a wrench or a screwdriver. Simply turn the locking lever and slide the stopper. Some models have the ability to fasten the blade with the teeth up, which really allows you to cut from the bottom up.
• Soft start - this function is present in powerful tools so as not to overload the network when the device starts up. A soft start is also useful for the saw itself, since the blade accelerates without jerking. Along with this function, pay attention to the presence of overload protection - when the device overheats, it will turn off on its own.
• Electrodynamic brake - when the saw is turned off, the blade stops very quickly, which makes it possible, without waiting long, to place the tool on the floor or table and continue working.
• Double insulation of current-carrying components provides the ability to operate from an outlet without grounding. Plus, this significantly increases the service life of the tool. Thanks to the presence of double insulation, you can work safely even in wet weather.
• Battery – the advantages of battery-powered devices are obvious! This includes mobility, the absence of interfering wires, and a long service life away from the power grid. At the same time, modern battery models are practically in no way inferior to their networked counterparts, and the units charge very quickly and work longer, and they weigh less.

Any manual labor can be mechanized. Just as the usual screwdrivers were replaced by screwdrivers, so the hacksaw acquired good analogue- reciprocating saw. The devices are suitable for operation on various materials. The subject of this review is a reciprocating saw for metal. Varieties, principle of operation, device, rules for choosing a tool - further.

To some extent, reciprocating hacksaws resemble an electric jigsaw. They are equipped with a working element - a file, which makes a pendulum movement. It differs from reciprocating in that the part moves not only up and down, but also along a curve, as if filing the metal in front of itself. The length of the files varies from 100 mm, and the shape of the teeth is selected depending on the purpose of the work.

Without going into details, it consists of the following main elements:

• long body;
• handle (for ease of operation);
• trigger (start button);
• speed switch;
• replaceable file.

There are several elements hidden under the body that make working with a reciprocating saw more convenient than using a hacksaw. For example, a support shoe allows you to rest the tool against the workpiece and get a more even cut, and double insulation of current-carrying units makes possible job even in wet weather. Thanks to the pendulum system, the device does not heat up and does not deform the metal during the return movement.

Types of reciprocating saws

There are two large groups tools:

• battery;
• network.

The former have more power and are quite convenient to use, since their range of action is not limited. Suitable for work carried out in large areas where there is no access to sockets (for example, when roofing work in a country house).

Cordless reciprocating saws for metal have only one drawback - a limited service life, amounting to only a couple of hours. The issue can be resolved by purchasing several batteries.

Network tools are good for local work. In addition to the device, you only need an extension cord. They work for a long time as long as there is voltage in the network. The main disadvantage is the limited range. Also, the cord can get in the way, getting tangled under your feet, and its length is not always enough for the required work.

A special place in the classification is occupied by pneumatic analogues, which weigh less than an electric saw (up to 1 kg, when they weigh about 3). As a rule, such a tool is highly powerful and easily cuts even pipes with a diameter of about 150 mm. The pneumatic drive allows you to work in an aggressive environment (explosive, wet). The main disadvantage of the products is that they are much more expensive than their electrical counterparts.

Classification of reciprocating saw files

The standard blade included in the kit does not always meet the requirements for the job. Therefore, manufacturers offer files that differ from each other:

• the shape of the teeth, their number, size;
• the shape of the blade itself (it can be straight, curved for cutting along a given path and for through cuts);
• pitch between teeth (constant - the most common, variable - for special works like cutting thick workpieces);
• blade length (based on recommendations for a specific tool).

Before choosing a blade for a reciprocating saw for metal, you need to know the product labeling. When visiting a store construction tools When studying saw blades, the following designations are encountered:

• HCS – files with a high carbon content, more suitable for wood, plastic, and other “soft” surfaces;
• HSS - tool blade high speed steel, excellent for ferrous or non-ferrous metals;
• BIM – combination of HCS and HSS; The canvas is universal, working equally well with metal, wood and other materials;
• HM and CT are carbide blades suitable for cutting steel.

When choosing a blade for a reciprocating saw for metal, it is important to know the specifics of the work for which it will be used.

How to make a reciprocating saw with your own hands?

Some craftsmen prefer not to spend money on new equipment, but to make their own saw using a jigsaw. In addition to this device, you will need:

• block 180x70x45 mm (or more/smaller, based on the dimensions of the saw and blade);
• rounded timber for the handle;
• metal tube with a diameter of 10-12 mm, a length of about 150 mm;
• metal plate that serves link between the jigsaw and the tube;
• two flat wooden parts measuring about 140x70 and 140x50 mm, 7-10 mm thick (will be attached to the sides of the block).

The operating procedure is as follows:

1. On one side, a sheet is attached to the tube, on the other, a plate (bolted connection in both cases).
2. A hole is drilled in the plate for fastening to the jigsaw by adjusting it.
3. In one of wooden parts a square hole is drilled for the canvas so that it passes through it freely.
4. In another part, a narrow slot is made for the file, and a roller stop is also attached, with which the latter will be in contact.
5. A groove is cut out in a large block for the blade.
6. Two parts are attached to the block on both sides using self-tapping screws.
7. The handle is fixed.
8. The plate is attached to electric jigsaw onto the factory bolt.

The jigsaw has now been converted into a reciprocating saw, which is ready to go.

Detailed video on how to make a reciprocating saw:

How to choose a good saw

A wide range of saws presented in stores will allow the buyer to find the best equipment for specific purposes. Before purchasing a reciprocating saw, it is advisable to comparative analysis several models, based on the recommendations below.

1. Decide whether household or professional equipment will be purchased. The first models are aimed at less intensive use and are designed for 20-25 hours of operation per month. The second ones are more powerful, heavier (4-5 kg), and can work for a long time without a break every day.
2. Desired power for household tools- from 800 to 1000 W. The more powerful the saw, the faster the cutting and the better the work with large workpieces.
3. The stroke frequency must be adjustable, as well as the cutting speed.
4. Smooth start of work. This increases user safety, as sawing starts without jerking.
5. Pay attention to the method of fastening the equipment. This can be a locking ring (sliding) or a locking lever (rotating).
6. It is imperative to have a blade travel limiter so that if additional force is required, the user can rest on the workpiece.
7. The canvas should be changed easily, without additional tool and preferably manually.
8. Automatic shutdown when overheating is welcome.
9. It is desirable to have an electromechanical brake, which quickly stops the tool after finishing work.
10. There should be no vibration during operation even at idle.
11. The device should be easy to use, and for both hands. Also, the limbs should not become numb from prolonged use (for example, metal scissors cannot boast of this).

Choice is important good manufacturer, because any product has low-quality fakes on the market.

The most popular among users are the German brands Bosch, Metabo, Japanese Makita and American DeWALT.

Reciprocating saws for metal - innovative solution For various works. The tool is universal, although very specific. The user can choose equipment in an acceptable price range, since the range of models is huge. At first, the saw may seem uncomfortable, but after a while it will lie smoothly in the hand, and the buyer will understand what he has done right choice. Familiarization with the information above and the tips given will allow the user to buy a reciprocating saw for metal high quality and enjoy its work for a long time.