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

A twist drill is a tool that drills a round hole in a workpiece by rotating it relative to a fixed axis. It is named after the spiral shape of its chip groove, which resembles a twist. There are 2, 3 or more spiral grooves, but 2 grooves are the most common. The twist drill can be clamped to a manua Read More