Is it easy to consult an electric drill?
A tapping hand drill, the early start is not easy, we must first need to have a 1. speed and reversing the electric drill, the bottom 2. is slightly larger than the manual, 3. volume efficiency, 4. general material is relatively thin (shallow tapping) 5. material hardness, 6. skilled degree. To sum up, it is not very convenient, (if it is self tapping screws or more convenient), the amount of small, use manual bar
Hand drilling, tapping, only suitable for thin plate, more than 6 cm of the plate, if you use a flashlight drilling tapping, it is easy to cause broken tap, even if the use of thin sheets should also grasp the intensity, using point movements! Electric torch drilling and tapping is most suitable for thread, that is, the original thread rusty or slippery silk, and a large number of when used, can be reversed electric drill sleeve
