How many power drills do you use to drill through the wall?.
Generally through the wall drilling Tsui is 30 cm, 18 mm in diameter, enough wire, and if it is not big enough, you can drill while shaking, the hole expanded a bit, it may be about 30 yuan,
The electric power determines the maximum speed and drill hole sizeThe general minimum electric power of 320 watts, the nominal maximum diameter is 20, can hit the wall through hole 18, but the use of 26 bit wall can also be usedThe size of the drill will depend on the use of the hole through the wall. If you wear wires and cables, you usually use 18, which is basically the smallest bit through the wall, and then small, it is easy to breakIf you are used to install water pipes, the sewer pipe, then it is recommended to use diamond, power is generally 850 watts, you can hit 80 diameter hole
Through the wall of the electric drill is an impact drill, specific to the hardware store, ask the boss all know, like drill bit this more, there are 40mm diamond, hit many holes, with what drillWith the best diamond, dust-free
