Tools are required during construction or repair work, who will be able to work with wood efficiently and quickly, providing an even cut. This tool is a circular circular saw for wood, it is convenient and fast to work with it. But no need to think, that all circulars are the same, just buy your favorite dust and a few variables, the cheapest discs, and you can get to work. In fact, everything is much more complicated, when choosing a saw, variables for circular saws play a very important role.
Removable disks from proven manufacturers
We must not forget, that circular saws occupy a leading position in the number of accidents. But any such case can always be prevented, if you choose the right saw and replacement discs, and always use a safe sawing method. A reliable and high-quality drive will always last longer, sprays more carefully, does not "bury" your circular and, naturally, much safer.
Example, today the popularity of use in repairs and construction is growing significantly, butt or disk hand beers. Many saw circles of various configurations began to appear on the market. You can buy more expensive, and you can save on prices. But there is a well-known rule: one of the main indicators of convenience when working with a saw is balance of a cloth of a circle, resistance to lateral loads, before heating, resistance to blunting and direct disk production technology.
If the disc is of poor quality, then it will heat up stronger and faster, poorly balanced, which can lead to deformation of the canvas during operation, or teeth will quickly become dull. Blunt circle is very dangerous. Poor quality saw wheel is more contaminated with adhesive and resin, they dull the teeth. The circle may jam and throw the blank at you, injuring. The result of an "inappropriate" vigilance, this is a large number of marriages, poor and inaccurate sawing, reduced saw productivity, engine failure or overheating and your safety.
That is, do not forget, as for pollen discs, there is a rule "verified manufacturer and price", and careful selection of the disc also plays an important role. Naturally, you decide, but don't forget, that buying a cheap option from an obscure manufacturer, you run the risk of buying a disc with all its flaws. And then, probably, you will need to spend extra on cutting material, new circle or, even worse, on a new circular.
Why there is no universal saw wheel for all types of work?
Unfortunately, there are no such vigilant circles, which would equally cope with different tasks and materials or could be installed on any type of circular saw. There is no such disk, which could make the same quality saw in both soft and hard wood, longitudinal or transverse sawing in materials with different coatings. Disks need to be selected to solve specific problems. It will depend on the vigilant circle, what material the circular saw will work with.
So, you will need to spend more, acquiring several different saw circles, for different types of work. But this approach will be justified by all 100% in relation to the speed and quality of your work.
Example, not a secret, that for cross saws face dust circles with a negative inclination of teeth for a pure saw are better suited for face sawing. Thus for longitudinal cutting of a circle with a negative inclination it is effect of "repulsion" of a detail, increase vibration and resistance of the material. Circles with negative impudence usually have more teeth and a small interdental space. These sinuses are clogged with sawdust, increasing the load on the motor. We must also not forget, that there are two main types of saw blades - carbide and monolithic.
What is the difference between disks with carbide teeth from monolithic disks?
The disk is called monolithic, which is made of solid material. Carbide wheels are made of soldered teeth.
Monolithic circles can have two configurations:
- curved teeth with elongated back, for sawing soft wood;
- sharp teeth, for clean transverse and longitudinal cuts in soft and hard wood.
According to their indicators, monolithic circles quickly blunt, require tooth separation and periodic sharpening. Grind your teeth very millet, they can withstand several sharpening. Most discs have a large number of teeth.
Carbide wheels are much more reliable, teeth can not be sharpened for a long time, often these circles justify themselves, even if they are not ground at all. There are enough advantages:
- large range;
- quality sawing;
- reliable in operation;
- do not require divorce;
- have ample opportunities;
- Relatively low price.
The disadvantages include the difficulty of grinding teeth and the expensive price.
Choice of pollen disk
It is necessary to begin with careful studying of technical parameters of your circular saw on a tree. You need to know all its features and characteristics:
- What is the speed of rotation of the circular spindle?
- What is the power of the motor and the possible loads?
- What is the outer diameter of the saw wheel allowed when operating the saw?
- What is the cross section of the landing pin?
Also don't forget, that is expensive, a high-quality wheel will make an ordinary circular saw a unique saw. Everything should correspond proportionally.
Why it is important to know about the allowable loads and engine power?
Circles with a negative slope, with a large number of teeth, with high torque give a significant load on the engine. So, before buying a saw blade, you need to learn as much as possible about the possibilities of a circular saw.
Why it is important to know the spindle speed?
The size of the wheel must always be proportional to the power of the motor. The drive is designed to use a certain range, therefore, working with an unsuitable larger blade can be very harmful to the tool. Theoretically, when the protective cover allows, slightly larger discs are allowed (per millimeter), but it is desirable to comply with all technical specifications to the end, to avoid complications.
Why you need to know the diameter of the landing pin?
The most common problem: in any model of a saw "own" diameter of a pin. Sometimes it is quite difficult to choose a circle, which would meet all the requirements and have exactly your seat. For now, it is possible to buy discs with "non-native" landing diameters. To do this, you also need to buy an adapter ring for your seat, if this ring is for sale.
Why it is important to know about the allowable external dimensions of the disk?
Any tool is designed only for equipment of a specific diameter. This means, that drive power, protective cover, motor - all these elements of a circular saw on a tree are limited by the set technical possibilities.
Picking a circle for a particular job, pay attention to the following factors, as:
- Permissible number of revolutions of the circle;
- Disc series;
- What work will be performed;
- The outer diameter of the disk;
- Circle design;
- Number of teeth;
- Landing diameter;
- The angle of the teeth;
- Type of teeth;
- Marking on the canvas of the circle;
- Canvas thickness;
- The price of the canvas.
What types of work are planned?
This is a longitudinal or transverse cut? Tool type: table saw, trimming saw or hand saw? What materials need to be cut: solid wood, soft wood, wood with one or two-sided coating, Particleboard, formwork, laminate, non-ferrous metals, building tree, sheet metal or just profile and pipe, etc.. D. It is better to take a pen and a piece of paper and write it all down.
Why it is important to pay attention to the design of the spray wheel?
The body of the disc can provide detailed information about its quality. A quality disk undergoes computer balancing and is made by laser cutting. Each circle is ground separately. This can be seen, if you check the drive for light. At qualitatively saw wheel traces of grinding diverge circles from a landing place. This means, that the circle was balanced, calibrated and ground separately, instead of grinding the whole sheet of metal before cutting the canvases.
You also need to pay attention to that, as a polished surface. If there are signs of roughness and roughness, then this circle will not give the proper result in the work, teeth will blunt faster, the temperature of the circle will rise more.
Temperature compensation slots with a hole must be present on the body of the canvas. These slots are needed to reduce the temperature of the canvas, as well as protection against dust noise and vibration.
Why you need to pay attention to the external size of the circle?
Any tool is specifically designed to equip a given diameter. Using other sizes can have negative consequences. The outer diameter does not affect the cutting speed, but only to the depth of cut. But, the deeper you immerse the canvas in wood, the more the load on the motor increases. Experts advise to keep the minimum depth of cut. This reduces the heat, improves the quality of sawing, reduces engine load and cutting resistance.
Why it is important to pay attention to the diameter of the seat?
The circle must be firmly on the landing pin. Some discs, for rigidity of fixing, are made with additional openings on edges under narrow pins.
Why it is important to pay attention to the number of teeth in the circle?
The number of teeth is responsible for the cleanliness and speed of cutting. The greater the number of teeth, the better the finish cut, but the load on the motor increases and removal of shavings becomes more difficult, which slows down the supply of dust in the material and its speed. A small number of teeth implies a wide interdental distance, which favorably affects the removal of chips, accelerating the sawing process. But the quality is rough and rough.
A large number of teeth are most common on large circles with negative cheeky teeth. A large number includes the range from 60-80 teeth. To small - range 15-50 teeth.
Range 30-70 is considered average. It is more suitable for different types of work. Most circles with an average number of teeth can cut in different materials, make both transverse and longitudinal sawing, drank in both soft and hard wood.
Why it is important to pay attention to the labeling of the disk?
In a high-quality saw circle, the marking is not applied with paint, but with a laser. Inscriptions can help you choose the right disc, as well as help in future maintenance. Circles can be marked on the canvas: canvas thickness, outer diameter, number of teeth, landing diameter, teeth configuration icon, series of pollen disk and number of revolutions of a disk.
Why it is important to pay attention to the number of revolutions of the circle?
Required for safe operation, so that the possible speed of rotation of the wheel exceeds the maximum allowable speed of rotation of the tool spindle.
The maximum possible speed of the wheel varies depending on the size of the disk. It is inadmissible to exceed the speed specified on a cloth cloth. Consequences of excessive rotation - risk of serious injury, reduction of service life of a cloth and loss of quality of a cut.
Almost every manufacturer has discs for all major materials. Differences - in the amount of know-how, product quality and, certainly, in the price. Also a feature of a serious manufacturer - a convenient simple classification and a wide range. As is often the case in the market, all the advantages and disadvantages are balanced. Cheap canvas cuts worse and dulls faster. Reliable and high-quality disk lasts longer, saws more carefully, but it is more expensive. Therefore, the choice of a particular brand - to some extent a matter of taste.