It has a screw shaped end point. Not as clean cut as a twist or flat bit. It is used with a hand drill Wood Hole saw Comprised of a twist drill surrounded by a large circular tube with a saw teeth.
If you’re a woodworker, you know the value of a good hand ... tools. There’s not a hint of CNC control to speak of. For the Komori Small Plane Factory and the Koyoshiya Watanabe Woodworking ...