"I wanted to create a basic improvement to compound hole saw drills to make the task of removing the material plug inside the ...

Hole saws are cutting tools used to make circular holes in a variety of materials. Also referred to as a hole cutter, the tool consists of a cup-shaped metal cylinder with a toothed cutting edge on ...

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.