Spiralbohrer Schärfen mal anders – Bohren ohne Vorbohren in dünnen Materialien

In this video, I demonstrate how to sharpen a conventional twist drill bit so that it's suitable for drilling into thin materials without pre-drilling. Thanks to my special sharpening technique, the hole is perfectly round rather than polygonal, unlike conventional holes. This method is especially useful for thin materials, where the drill bit can often slip or leave unwanted burrs. Watch the video and learn how to achieve the best results with this simple yet effective sharpening trick! Drill sharpening guide*: https://www.hausundwerkstatt24.de/Sch...