Hand Circular Saws Models Review
The life of a modern person cannot be imagined without a saw. It is necessary both in industrial production and in households. The owner always has a hacksaw at hand, the professional has a whole arsenal of them. There are many types of saws, depending on their purpose.
Saws are divided into hacksaws (manual and electric), circular (mainly electric, but there are also manual), miter, chain (with lateral and longitudinal placement of the engine), jigsaws, tape, circular. In addition, diamond, spiral saws are distinguished. In the listed species. different purposes.
Hand saw classification
Hand saws with longitudinal or transverse cutting are called hacksaws. They are divided into tools for metal and wood.
According to the purpose, the following types of hand saws are distinguished:
- classic. with a longitudinal or cross section
- spike. used for cutting connecting studs,
- Circumferential. used to cut holes.
By the size of the blade, hand saws are classified:
- on mini-hacksaws (with a blade length of up to 350 mm, with frequent small teeth, mainly designed for carpentry);
- universal (blade length. up to 550 mm, medium teeth, designed for both carpentry and carpentry);
- wide (blade length. more than 600 mm, large teeth, used for carpentry).
In addition to hacksaws, types of saws for manual use include:
- Bow saws, which are designed to perform point slices, because their blade is thin and flexible. If hacksaws make large cuts, then with hacksaws. small ones.
- Circular, designed to make cuts in any direction, chamfer, craft workpieces, cuts.
Circular saws are characterized by the presence of a long narrow blade.
Thorn saws (award saws) are similar to a planer with two handles. Designed for cutting spikes and grooves.
Among hand saws, they are also distinguished as band saws (with a rectangular blade limited by a top on the edge, limiting the cut with a blade width, the handle is located at an angle of 45 °), folding (with a folding blade and small teeth) and garden (blade in the form of a saber, used to cut trees in garden).
For the purpose of metal processing, only one type of hacksaw is used with a blade of various widths and small teeth. The canvas is fixed in the beam holder and secured with a screw.
Characteristics of hand saws
Slitting is designed to cut wood along the fibers. The teeth of these saws have double-sided sharpening, so they are sawed the same way forward and backward.
Cross cutting is intended for cutting wood across the fibers. Their sharpening is similar to longitudinal saws, so the cutting is carried out both forward and backward.
The following types of saw teeth are distinguished: small, medium and large, they are marked according to the TPI standard. The smaller the teeth, the better cut they provide.
Saws on wood can be with transverse, longitudinal cutting or universal. Today in the market you can find saws with gaps between the teeth. This type of hand saw is designed for cutting raw wood.
The hacksaw is designed for rough cuts. If you use a miter box, you can use it to cut at a certain angle.
These types of saws are distinguished by their quiet operation, lightness, lack of gas (unlike chainsaws), the ability to start in any room with electricity. These are their positive qualities, but there are also negative ones. These include, first of all, the need for an electrical network, which is uncharacteristic for absolutely any conditions. In addition, these saws can be used at a certain voltage power, and their service life is limited to 5 years.
Видео: Hand Circular Saws Models Review
The following types of electric saws are distinguished: circular, circular, miter (the characteristic is given below), chain, reciprocating, and also an electric hacksaw.
Chainsaws can be used in the garden, logging firewood. They are longitudinal and transverse.
Reciprocating saw fits snugly to the cut material. She perform carpentry, carpentry and roofing.
The electric saw blade moves along two guides. It is characterized by good safety and precision cutting.
Carbide tipped discs are used for working with solid wood, plastic, thin metal.
Here the reciprocating movements of hand saws are replaced by circular ones, mainly due to the use of not electric force, but electric motor power.
The following types of circular saws are distinguished by design: gearboxes (the motor works due to the gearbox, on the shaft of which the disc is located) and gearless (the disc is mounted on the rotor shaft of the motor).
Gear saws are characterized by a deep cut compared to gearless saws. In the latter, the disk may have teeth having a direction coinciding with the direction of movement. In this case, the disk is called active. Otherwise, it is called passive (the inclination of the teeth against the direction of movement). The first discs are used for sawing wood, the second. metal.
A small number of manufacturers produce hand-held circular saws, which can be mounted upside down on a table and used as circular saws.
Some circular saws have a handle to ensure comfortable operation, and some are attached to the table and do not have a handle. The fixed part can rotate up to 60 °. This allows you to use these saws in the manufacture of rails, lining, skirting.
Complete with circular saws should be a line to ensure the most accurate cut.
An electric circular saw allows you to prepare spikes and select quarters of wood products.
These types of saws are used for sawing hard enough materials such as wood or plastic.
For different types of circular saws, you can change the angle of cut and depth. Using them, you can perform longitudinal, transverse, as well as inclined cuts.
The cut will be the better, the more teeth are located on the disk. However, these discs reduce the performance of circulars. Therefore, carbide tipped discs are now used.
Compared to a jigsaw, circular saws provide greater accuracy, but at the same time have a large mass.
Types of circular saws are allocated depending on the used disks. So, carbide tipped discs are used when it is necessary to cut hard wood, nails, thin metal, plastic. When using discs without soldering, they get clean (unlike the previous type) and even cuts, however, such discs are designed only with soft wood.
Stationary circulation saws can be with a closed cast base, lightweight and hybrid. Lightweight circular saws are mainly used at home. The bed can be made of steel and cast iron, but always open, unlike professional models. A lightweight suspension is also used here. Professional models allow you to cut up to 250 mm, and lightweight. up to 90 mm. Vibration in the latter species is much higher, power is supplied from a 220 V network, while in professional ones. mainly from 380 V.
In hybrid circulation saws, the bed is closed, they are not very expensive and work from household power networks. The maximum workpiece depth for the main saw models does not exceed 75 cm. Hybrid and lightweight circulars have a power of up to 2 kW, while professional ones. over this value.
For a very quick movement of the blade up and down, an electric jigsaw is used, with which flat curved workpieces are cut. Using this tool, you can cut porcelain, wood, metal, OSB, plastic using special files that differ in the frequency and inclination of the teeth. These types of jigsaws are characterized by stroke frequency, depth of cut and power.
The band saw is a continuation of the jigsaw. Her canvas is represented by a tape with teeth, which is closed and driven by an electric motor. Compared to the jigsaw, greater accuracy and cleanliness of the cut is provided here. The depth of cut can be 8-50 cm. Neither a circular saw nor a jigsaw can reach the maximum depth of cut with a band saw.
The following types of band saws are distinguished:
- According to the material of manufacture. carbon and alloy saws. The latter are characterized by increased wear resistance.
- According to the manufacturing technology and hardening of the teeth, the tapes are classified into saw blades with incised unhardened and chopped hardened teeth.
The first saws have a low cost and allow you to cut wood with various inclusions. It is logical that small speeds and small amounts of work are used here. Second saws have a high cost, but also high wear resistance.
For figured cutting use blades 3/8 inch, for ordinary woodwork. 1/2 inch.
There are also band saws for cutting metal, similar in design to a woodworking band saw, but allowing only transverse sawing of rolled steel. This incision can be made at various angles.
With the help of these saws, it is possible to carry out sawing at various angles in the vertical and horizontal planes. They are used for cutting wood, plastic, metal.
Two types of miter saws are distinguished: ordinary with the functions inherent in miter saws, and combined, which combine the functions of a circular and miter. In the latter type of saw, a saw table is located under the disk. These tools are characterized by the presence of a broach, with which increases the depth of cut. The disc is protected from jamming by a splitting knife.
Thus, there are various types of saws. Their choice is determined by the purpose and frequency of use, as well as the ability to use electric current in the case of using saws.