A small chainsaw mounted on a pole for cutting high branches is known as a pole saw. When you need to cut a perfect hole of a ...

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.

Starting with the blade inserted into a through-hole, the saw slowly cuts a beautiful nested ... injection molding machines and realized these wooden screws look pretty similar.