Spiralbohrer
Spiralbohrer, known in English as twist drill bit, is a cylindrical cutting tool with helical flutes along its length. It is designed to bore round holes in materials such as metal, wood, and plastics. The tip provides the primary cutting action, while the flutes remove chips from the hole to allow continued cutting.
Most spiralbohrer are intended for right-hand rotation, and clockwise drilling is the standard. Left-handed variants exist
Materials and coatings vary: high-speed steel (HSS) twist drills cover a wide range of uses, while cobalt
Application and usage: spiralbohrer are widely used in hand drills and drill presses. For metal drilling, appropriate
Variations include different lengths, shank shapes (round or hex), and point angles (around 118 degrees for general