There are many different drilling tools on the market today, including the common twist drill, the indexable shallow hole drill and the flat drill. The common twist drill is usually used for drilling on machining centres and consists mainly of a working part and a shank. The shank part of the tool i Read More

Today I will be talking to you about the "never-ending twist drill" in the field of metal holemaking, and here I will focus on the HSS twist drill. Despite the continuous development of new hole processing tools in the modern industrialisation process, the twist drill has always been the mainstay of Read More

1, Fill some lubricating oil, use a sharp pin or chopper to slowly knock out the broken surface in the reverse direction, and reverse the iron sharpening from time to time (the most common method in the workshop, but it may not be suitable for threaded holes with too small apertures or broken taps t Read More