A guide to purchasing power tools for woodworking

Safety and Protection:
The speed of power tools is very high, generally more than 1,000 revolutions, some power tools even more than 10,000 revolutions, if you do not pay attention to it is likely to cut into the meat, so the operation of power tools must wear a mask and goggles (woodworking dust, must do a good job of protection), do not wear gloves, because the high-speed rotating power tools will roll the gloves into the rotating part, thereby injuring the finger.
The most important thing to mention is the Angle Grinder, the Angle grinder is harmful, because this thing is not designed for woodworking, it is designed for metalworking, the speed is generally about 13000 RPM, so do not install the Angle grinder woodworking saw blade sawing wood, and the marble machine is used for stone workers, the speed is also more than 10,000 RPM, can not saw wood, and the tool must be dedicated.
Brushless:
Brush motor is a traditional motor form, the stator is the shell, permanent magnet; The rotor is connected to the central coil winding and the output shaft, and the electricity enters the central coil group through the brush, generating a magnetic field change, generating an interaction force with the stator, and driving rotation.
Brush motor is a traditional motor form, the stator is the shell, permanent magnet; The rotor is connected to the central coil winding and the output shaft, and the electricity enters the central coil group through the brush, generating a magnetic field change, generating an interaction force with the stator, and driving rotation.
So, as long as it's not bad money, go brushless. However, brushless is mainly used in industry and places where dust control is extremely strict, so families can use brushes.

Classification of power tools:
1 Electric Drill,percussion drill, electric hammer and impact driver/wrench
Let me first talk about the structure of these four. Electric drill is very simple, is to drill down, electric driver added gearbox, adjustable torque, Impact Drill added gear to do lateral impact, can play red brick, can not play concrete, wireless impact drill added gear impact structure on the basis of electric driver, electric hammer cylinder to do impact, the force is very large, can play concrete, impact driver and impact wrench structure is the same. It is to increase the instantaneous impact force in the direction of rotation to increase the torque, even a 12V impact driver can easily reach 100NM torque. The impact driver chuck is a 6.35mm hexagonal quick clip, suitable for long screws, and the impact wrench is 1/2 square head, suitable for framing workers.
Therefore, carpentry needs to buy a charging hammer drill, a wired light electric hammer and a charging impact driver. Hammer drill and impact driver recommended 18v.
2 Circular saw, curve saw, guide saw, Wu Xin guide and reciprocating saw
Circular saw is the circular saw blade driven by the motor for cutting, guide saw on the basis of circular saw improved bottom plate, with special guide rail for cutting, curve saw and reciprocating saw are driven by the motor for reciprocating movement, reciprocating saw is fire fighting, curve saw can see the curve, but the saw is not straight, the cost of wireless saw is higher, so it is recommended wired.
Overall, woodworking needs an electric circular saw + Wuxin guide rail to open the long board, if more skilled can buy a curve saw.
3 Round sand machine and square sand machine

The round sand machine uses a 125mm diameter circular self-adhesive sandpaper, which shakes while rotating, with high efficiency, and the square sand machine uses square sandpaper of different sizes, which only shakes and does not rotate, which is less efficient but more fine. Therefore, it is best to use square sand machine and round sand machine together.
4 Multi-functional cutting and sanding machine
Commonly known as universal treasure, by the overtone invention, through high-frequency vibration to achieve cutting and grinding, anything can be done, but what efficiency is not high. Novice is not recommended, veteran can consider, it is best to charge.
5 Trimming machine and bakelite milling
The functions of the two machines are similar, but the chuck size is different and the base is different. Trimming machine chuck is 1/4, the base is fixed, bakelite milling chuck is 1/2, the base is pressed down, it is best wired.