Choose a circular saw for home
Disk (circular) saws are designed for longitudinal and cross cutting of wood derivatives (plywood, MDF, DSP, etc.), various types of plastic, slate, metal, organic glass, composite materials. The first appliances of the circular saw, designed for 220 V, was developed by AEG in the last century. In our days, this tool is a sophisticated device with many advanced features that have become almost indispensable for carrying out various kinds of construction and repair work on the plot and the house. For example, to select a quadrant of the Board. Read more about sample quarters using a circular saw on video:
The types of saws ↑
Are many types of saws that vary in design, capacity, and other parameters.
Circular saws for working wood ↑
Manual circular saws for working wood it is better to choose with the possibility to adjust the speed in the range from 50 to 90 m/s. With this circular saw can handle wood of any breed and quality. For woodwork is much more important to find a suitable working drive:
- toothed discs with carbide tipped used for cutting across wood fibers, nail files, layered chipboard, cutting hard woods;
- drives with variable teeth and a reduced thickness cutting is used for slitting, when performing works requiring high precision. Suitable for treatment of soft rocks, for example, poplar;
- universal discs have the widest scope, is ideal for construction and renovation at the cottage, in the home. The cutting of wood exotic woods.
Circular saws for metal ↑
Versatile tools allow you to cut profiles, plates, sheets, tubes and pipes of steel, non-ferrous metals and softer materials. Equipped with a serrated disc of tool steel, alloyed with tungsten. Powerful circular saw blades for metal capable of cutting steel sheets with thickness up to 12 mm, pipes and profiles with a wall up to 4 mm.
Submersible circular saw blades ↑
Submersible circular saw blades are used for the manufacture of the troughs, slots, grooves. Gear drive circular saws of this class is below the base plate, is missing the lower part of the protective casing, it allows to produce the frame in any place, at different angles. Submersible circular saw is more convenient for repair of flooring, roofing, work with multi-layered materials. In the latter case, cutting is done in two passes, which avoids chipping. The design of the tools allows you to adjust the cutting depth with a precision of 1 mm.
Cordless jig saw ↑
Designed for use in places where mains power is difficult or impossible. For example, at the height of the repair or construction of roofs, of the cottages, where no electricity. Modern models of circular saws are equipped with battery, allowing to provide a sufficient time of continuous operation of the tool. Sometimes use two batteries. Charging time to the minimum, in some models it is only 30 minutes. As for torque and power then cordless jig saw no way inferior to the peers connected to the network.
The main parameters of selection of circular saw blades ↑
The main parameter to consider when selecting is the diameter of the cutting disk. What it is, the stronger must be the engine, the harder the stabilization system, the overall and heavier the tool, the thicker the detail it can cut. When sawing thick workpieces is not necessary that the toothed disc has passed through it, cutting can be carried out from two sides.
Another important characteristic is the maximum depth of cut (for beveled and perpendicular to the edge). It is usually specified in the passport data of the circular saw. This tools are divided into the following classes:
- household (mainly used in working with sheet materials) 40-50 mm;
- universal (suitable for all range of works) – 50-60 mm;
- professional – 65-140 mm.
You must consider the weight and maneuverability of the circular saw, the greater the weight, the less maneuverability.
Also circular saw blades are distinguished by power output:
- appliances up to 800 watts;
- universal – from 800 to 1200 W;
- professional – above 1200 watts.
It should be noted that classification according to the given parameters conditional. Each manufacturer has its own classification.
You should pay attention to the speed of rotation of the disk. This characteristic affects the purity of the cut. In addition, the higher the speed, the more heat. For fuse materials of high speed models are not appropriate. Better to choose hand-held circular saws with adjustable speed of rotation.
The presence of electronic and mechanical systems to increase performance and security are also important characteristics of the instrument. Constant electronics, for example, stabilizes the rotation speed of the toothed disc. When working with a circular saw fitted with this system, virtually eliminated the jamming of the disc, the cut quality is much higher. Adjusting idling speed allows the manual selection of parameters of materials having different characteristics.
The presence of a smooth descent and system overload protection prevents the circular saw from damage to the mechanical parts (gearbox) and motor. Electrodynamic brake, stopping sharply toothed disc, protects against a reverse punch, the operator from injury, the workpiece from damage.
Jamming of the snap-in can cause the opposite impact and breakage of the motor. It is better to choose circular saw equipped with a slip clutch. When triggered, the system working shaft will continue to rotate at the blade from jamming.
Many of the parameters of the circular saw depends on its reference platform. It is located on the mounting elements for accessories and mechanical control devices. The base plate more high quality hand saws are made of cast aluminum alloy. Platform professional tools are often made of steel by stamping. Such plates are more resistant to shock loads.
The cutting angle is adjusted by changing the position of the platform relative to the disc. Some models allow you to make the cut at angles from 30° to 50°. When buying hand saws are recommended to pay attention to the reliability, accuracy regulating the handles. The backlash should be absent.
Quality tools, especially, heavy circular saws, must have the ability to install in a stationary position. Thus, a machine without a table.
On the sole of the tool must be slit the opening for the control line cutting groove for guiding rail, which is achieved by the straightness of the cut. Some models of circular saws are equipped with laser pointers when working just need to combine it with the line marking.
A very important usability tool. Most prefer circular saws, with mushroom-shaped front handle, which is easy to hold in any position. Grips should be rubberized, it helps to control and secure hold of the tool. Some companies produce models for left-handers. Handle such circular saw is located on the mirror. Before purchase it is better to hold a circular saw, to assess the review area, the convenience of working in different positions.
You should also pay attention to the removal of sawdust from the work area. In most models of circular saw blades is realized by blowing and place the cut in the direction of the operator. There are circular saws with a possibility of connection of industrial pump and container for collecting sawdust.
Better to choose a tool with a rear-mounted power supply cable supplied with hard protective case, as it’s easy to cut through negligence.
Depending on proposed works, their duration and individual characteristics of the operator can be select a suitable tool. In most cases, to the house and garden quite versatile circular saws average power with adjustable speed.
More about choosing circular saw blades for home video: