What is Saw?
[[File:US Navy 040320-N-1261P-034 Builder 1st Class Joseph Migues works to reconstruct a new base-camp for Naval Mobile Construction Battalion Seventy Four (NMCB-74).jpg|thumb|right|A handsaw in use]] A '''saw''' is a [[tool]] used to cut things. There are many kinds of saw. Some of them are hand tools that work with [[muscle]] power, like the saw in the picture. Some saws have other sources of power and can be very powerful, such as a [[chainsaw]] that is used to cut down [[tree]]s. The work carried out with a saw is usually noisy. Using a saw to cut materials is ''dangerous'' because of sharp [[:wikt:teeth|teeth]]. Care must be taken not to let sharp edges touch the skin. Parts of the material being cut can fly off the work and become a hazard to [[breathing]], to [[eyes]] and to the [[skin]]. ==Hand saws== Or hand powered saws. These use the motion of a person's arm to make a cut. ===Push saws=== Many saws are designed to cut on the push stroke (when the saw is pushed forward).<ref>Japanese Architecture and Art Net Users System (JAANUS), [http://www.aisf.or.jp/~jaanus/deta/n/nokogiri.htm ''Nokogiri'']; retrieved 2012-4-13.</ref> ===Pull saws=== [[File:Jap saw Zahnung P2100042b.jpg|thumb|right|Teeth of a Japanese saw]] The {{nihongo|[[Japanese saw]]|鋸|''nokogiri''}} is a type of saw used in [[woodworking]]. These saws typically cut on the pull stroke (when the saw is pulled backwards).<ref>Takenaka carpentry tools Museum, [http://dougukan.jp/contents-en/modules/tinyd8/index.php?id=19 ''Nokogiri''] {{Webarchive|url=https://web.archive.org/web/20120424072927/http://dougukan.jp/contents-en/modules/tinyd8/index.php?id=19 |date=2012-04-24 }}; retrieved 2012-4-13.</ref> ==Power saws== There are several kinds of [[:en:wikt:mechanically|mechanically]] powered saws. Some are powered by [[electricity]] from a [[:en:wall socket|wall socket]]. Others are powered by [[:wikt:batteries|batteries]]. Still others can be powered by [[Internal combustion engine]]s, steam, or water power. ===Chainsaw=== A saw designed t