matter of fact, a saw is a tool. This tool is composed of a blade with an edge
that is toothed and it is used for cutting different materials like wood,
plastic and aluminum. At first, saws
were serrated materials such as sea shells, shark teeth, obsidian and flint. To cut with
a saw you need to place the toothed edge against the material and continuously
move it forcefully forth and less forcefully back. This force applied by
different power sources like hand, petrol, electricity or other.