Either sharp blade or work degrade
![Image](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiTpdyG64bbpb_Gho204DEllBSEeHIT2GJjjMHMuF700eHKW-p2LLycZeyp7BaVgo0VACRUl8WFN4BnnyzACwkSm3YQVDAmPA5wexQFab7MBhAyLiPUoIXKbwY0vx3BHy_RALx3L9E6gxys/s320/RDSM9X2-1.jpg)
At the start of civilization, lighting of fire was invented. Afterwards various kinds of tools were invented to help in the process of agriculture, construction and dressing. The focus was mainly on developing tools to shape and size the materials used. For cutting purposes, the use of knives and saws came into practice, and preference of saw was inevitable for working in reciprocating mechanics. Almost with the same effort of using knives, the reciprocating moves of the saw can produce twice the job done. A reciprocating saw is a popular tool used by many window fitters, construction workers, and emergency rescue services. Variants and accessories are available for specialized uses, such as clamps and long blades for cutting large pipe making them the best reciprocating blades . The term reciprocating saw is commonly applied to a type of saw used in and demolition work. This type of saw, also known as a hognose has a large blade resembling that of a...