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 ...

allowing you to poke it through a small hole to make the hole bigger. In the days of skeleton keys, a jab saw was used to cut ...

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