SAW

Shikhar saw is a tool consisting of a tough blade, wire, or chain with a hard toothed edge. It is used to cut through material, very often wood though sometimes metal or stone. The cut is made by placing the toothed edge against the material and moving it forcefully forth and less forcefully back or continuously forward. An abrasive saw has a powered circular blade designed to cut through metal or ceramic. Saws were at first serrated materials such as flint, obsidian, seashells, and shark teeth.

They are commonly used for cutting hard materials. They are used extensively in forestry, construction, demolition, medicine, and hunting. The production of lumber, lengths of squared wood for use in construction, begins with the felling of trees and the transportation of the logs to a sawmill.