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Construction: Saw

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Terry Brown

on 25 November 2013

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Transcript of Construction: Saw

google images
Construction technology
By:Terry Brown

Video clip
Saws and blades
first one:Stone saws set into handle also blade were made of copper and stone
Improvement:Stronger blades also narrower,made with iron and copper

Present day:High speed blades
Invention Technology Evolution
The society need a saw to make log cabin for the winter,cut trees ,cut car doors for car accident
The society wants a saw to cut bushes and make stuff like skateboards,paper,pencil and etc
Society wants and needs
Invention name
To cut wood and other thing
Also to build things
use of invention
During the Chun Qiu
Invented when
Lu ban
Full transcript