How to work correctly with a saber saw. Double insulation of current-conducting parts

Working with a sabre saw

When buying a tool, make sure that it is in good working order, there is no visible damage, pay special attention to the condition of the insulation; If you find any defects, contact the selling party with a demand to replace the tool or eliminate the defect; Before operating the sabre saw, familiarize yourself with its device, read the manual, learn the basic safety rules when working with such tools; Having turned the chuck, insert the blade and fix it in the chuck by a reverse turn;

  • Check that all screw and bolt fasteners are secure;
  • Wear personal protective equipment: goggles, gloves, hard-soled shoes;
  • Securely fasten the part to be cut;
  • Adjust the speed of the double stroke frequency of the power saw to the desired speed;
  • Adjust the stop to the proper position;
  • Plug in the tool and get to work.

Directions for Use

  • Keep the work area in order;
  • Use only electrical outlets with standard electrical ratings and in good working order;
  • When working outdoors, use an extension cord of suitable quality;
  • Do not work outdoors when it is raining or snowing;
  • Do not overheat the sabre saw motor and keep the air vents clean;
  • When cutting metal, lubricate the work area with machine oil;
  • If the blade jams in the rubber, immediately turn off your power saw motor;
  • Try to work evenly, without sideways effort, without creating excessive pressure on the blade;
  • When the work is done, you need to turn off and clean the tool from sawdust and other mousse;
  • Interskol chain saws should be stored in a dry, ventilated area.

Types of saber saws

When choosing saber saws, you need to be aware of the types of power tools that differ in a number of ways.

  • Professional (0.7-1.5 kW). Able to work for long hours without rest (up to one hour) and have a wide array of additional features. As a result, these sabre boards are larger, heavier, and priced accordingly.
  • Domestic (0.4-0.6 kW). They are smaller in size, don’t have as extensive a feature set, and weigh less. Designed for simpler tasks, such as sawing wood or thin metal for home repairs.

According to power saber saws are divided into the following categories:

  • Mains. They are powered by 220 volts. Requires a power outlet nearby. Can’t always be used in hard-to-reach areas.
  • Cordless. Run on an independent power supply, with greater mobility. Can be used in places where there is no 220 V mains. These electric sabre saws are more compact, but their operating time is limited by battery capacity.

Next we have prepared a rating of the best, according to our editorial, models of electric and battery-powered sabre saws for value for money, which have received many positive reviews.

Choosing a sabre saw

Household or professional

Sabre saw will be a good assistant to the home handyman, it will be useful when working in the garden, and in the construction of the cottage. That is why for non-professional use you can pay attention to models of “hobby” class from well-known manufacturers. They are of no less quality than their industrial counterparts, just designed for less intensive work. They are not badly equipped, often have the same set of features and capabilities. Household sabre saws need a periodic “rest”, while the professional machine, thanks to particularly durable parts with a huge resource, is able to work without stopping the entire shift.

Many people have a question: why do they make a tool that needs to be periodically turned off? It’s simple: the manufacturer gives you the opportunity to choose a saw according to your need, which is many times cheaper. over, not chasing after superefficiency, he can make the machine lighter, more economical and compact. Often a household model is supplied with a larger number of universal or special tooling. “buy and saw”.

The purpose of a particular model (mode of operation) is usually specified in the user manual. Be guided only by the manufacturer’s recommendations regarding the period of continuous work, because otherwise it’s very easy to get lost in terms like “semi-professional”, “universal”, “hobby”, “for all types of work” Don’t deal with those companies that don’t give such data delicately.

Power characteristics of sabre saws

Power is definitely one of the most important indicators for an electric tool. Our preference for a stronger motor gives us the right to expect more productivity. But it must be remembered that the flip side of the coin will be the serious weight and size of the product. This also affects the price of the saw.

In the case of the saber saw, we have the opportunity to choose a model with power from 500W (Metabo PSE 0525 or “LEPSE PEN-0,5”) to 1.5 kW (Makita JR3070CT). These are radical options, the bulk of units consume in the region of 0.9-1.2 kW. here is the time-tested golden mean, which provides the tool with the greatest versatility.

Makita JR3070CT

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It is obvious that the maximum allowable size and type of tooling, its speed and stroke length depend directly on the power consumption of the motor. It turns out that the “voracious” machine will handle the task faster, cut a larger workpiece, provide a better depth of cut in harder material. These figures are specified in the manuals of manufacturers of sabre saws. These figures should definitely be paid attention to when choosing a model. The higher they are, the “better” the machine. So, what we are looking for:

  • Number of strokes per minute, frequency (2,5-3 thousand strokes per minute). stroke/min);
  • saw’s stroke length, amplitude (19-32 mm);
  • depth of cut for certain materials (designated in millimeters).

Speed adjustment

It’s a well-known fact that different materials are best cut at different speeds. That’s why manufacturers “sabellas” equip their tools with stroke frequency limiter (Skil 4900 AA). This function is available in all sabre saws, although it is implemented in different ways.

Skil 4900 AA

The first variant consists in the application of a sensitive electronic button (usually large) with a long stroke, which can be “gassed”. This method is stepless, but requires a certain dexterity of the operator.

Option two is more advanced. One of several modes of maximum speed limitation can be selected with the little wheel or the slide bar, and more precise regulation is carried out with the trigger. That way, even with full depressing of the trigger, you will not exceed the maximum speed limit.

Presence of the pendulum stroke

The reciprocating motion allows the blade to deviate slightly from the cutting line (Kress 1200 SPE). This manoeuvre causes the saw blade to heat up less, the cut is easier to remove from the working area and the cutting speed increases noticeably. Note that this option is not available in all models, besides, it is not always relevant. For compound cuts, for example, the pendulum should be turned off completely.

Kress 1200 SPE

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Savvy manufacturers went further. they made pendulum motion on their sabre saws adjustable. advanced machines have a special multi-position lever for this (Hitachi CR 13VA). For each material with its own density, you can choose a different spread.

Hitachi CR13VA

Availability and functionality of the support shoe

This device lets us set the tool against the workpiece and stabilize it in relation to the cutting plane. As a result the speed and quality of cutting increases, the worker gets less fatigue.

Usually the stop moves along the axis of the saw and is fixed in several positions, then with its help we can change the outreach of the blade, being able to use all its teeth. The special chic is when the shoe can change its tilt, or rotate, so you can easily adjust to a complicated shape of a part or cut at an angle, from bottom to top. Changing the position of the stop we can rationally use the life of the blade, especially when multifunctional tools (different teeth in different segments).

The right support shoe repositions to as many positions as possible, requires no auxiliary tools to do so (just press a button on the body, or turn a lever), does not “play”, and can even be completely removed.

Blade changing mechanism

It is good form to change saw blades without tools, without having to run to the garage every time for a special key or screwdriver. Manufacturers offer a lot of interesting variants, but usually to extract or insert a blade you have to turn the lever of the latch or to move the locking ring. It is interesting that in many saws the access to this node is blocked by the hood (in the outermost close positions), and you have to drive the tool until the chuck stops “on the surface”. you can not pull it out by the saw with your hands.

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How to cut with your power saw?

Firstly you need to be particularly aware of your surroundings. Clean the work area of stones, nails. Secondly, you need to have a comfortable, stable sawing position. Third, place the electric saw on the wood with the toothed stop and turn the motor on so that the saw does not touch the surface yet. Next, lift the rear handle and guide with the front handle, drive the saw into the log, then pull it back. Next, push in even farther, but don’t force it, because it can break quickly or malfunction.

How To Use A Reciprocating Saw

Electric chainsaws are only good for cutting logs, trimming firewood, sawing dead wood, cutting branches, cutting boards and logs. The volume of wood can be different. However, it is worth noting that both sawing techniques and how to properly saw a certain diameter of the log. different.

Types of hacksaw blades

The versatility of the sabre saw is ensured by a variety of hacksaw blades, each of which is used for a particular material.

Saws differ in material, shape and size of teeth, pitch. First of all, attention is paid to the tooth size. Bigger ones cut faster, but the quality of cut is better with blades with finer teeth.

Saw blades with variable pitch are used for straight cuts in wood with nails.

The following markings are used to classify the blades:

  • HSS. used for cutting soft metal and non-ferrous metals;
  • HCS. wood, chipboard, plastic;
  • BIM is a bimetal saw with great flexibility and durability, it saws wood and metal;
  • HM. carbide, needed for cutting fiberglass, ceramics, steel.

Types of sabre saws

Sabre saw has similarity with usual drill, but it has a hacksaw blade instead of a drill, and the principle of work of the sabre saw is completely different from that of the drill. Power supply for both types of tools is the same. from a network or battery.

Power consumption of a sabre saw ranges from 400 W to 1500 W, which is exactly the same as the power consumption of a drill.

Another similarity is the speed control, as well as the replacement of different attachments for different types of work. So, the variety of attachments continues to increase, the most popular attachment is a hacksaw blade.

The variable tooth profile tips have also seen the light and have become very versatile. Thus, it became possible to use the part of the saw that was needed, most often it was used when cutting wood, and you can adjust either the quality of the cut or the speed of the work. But at this time there are also saws for plastic, ceramic, metal, glass. Attachments exist for saws as well as other tools, for example, sanding, file, brush, file and many others.

Disadvantages of saber saws

And now about the disadvantages. First of all, it is the low precision of the cut. Sabre saw is designed for relatively simple and rough work. When working that requires thin, smoothly curved cuts, it is better to use an electric jigsaw.

It is also worth noting the relatively low performance. In terms of this indicator the electric sabre saw is inferior to a circular saw and angle grinder.

And finally, vibration. The vibrations of the tool, which give back to the hand, create some discomfort, especially if the work session lasts more than half an hour.

Working principle

The principle of operation of the sabre saw is the pendulum rotation of the saw blade.

Its essence is that, besides the reciprocating action of the blade, there is also a pendulum motion, which raises the blade during its movement in the opposite direction.

Thanks to this constructive solution, the saw blade lasts longer, because of less heat, plus no large quantity of sawdust.

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It gives the opportunity to work more efficiently, without the use of other tools.

Sabre saws are designed for home use. these are utility class saws.

There are saws for those who are professionally engaged in construction. it’s a professional saw, also there are semi-professional.

Each class of saw is used in its area of expertise. The main difference is the load capacity and the ability to work a certain number of hours.

How to fit insulation 2022 to the latest Building regulations Part L

Working 20 hours or slightly more per month is possible with a first class saw.

Suitable for small jobs, can also cut pipes. Suitable when working with the dismantling of windows or doorways.

There are different models, each designed for its own consumer.

For example, there are more powerful models that can withstand long hours of work.

They are designed for the generalist. There are simpler models for personal use.

There are also cordless scroll saws.

Each tool comes with spare blades. This includes a stop, that is, a limiter of the blade stroke, which makes it possible to improve the result of the work, more tightly pressing the saw to the workpiece.

Rating of the best sabre saws for home and cottage

This impressive electric tool has a power of 1510 watts and a pretty decent weight, as much as 4.4 kg. Unlike lighter competitors, the Makita JR3070CT can handle wood, plastic and metal equally well. Cutting height is 255 mm, feed rate is 2800 strokes per minute, feed rate is 28 mm. The tool body is well constructed, in the recess of the gearbox there is a pendulum stroke control switch.

Miniature red release button to prevent unintentional movement of the switch. During operation, the Makita JR3070CT vibrates slightly. The saw blade is easy to change without additional tools. From the outside the product looks like a flawless piece of engineering.