A frame saw, also called a sash saw, is a saw with a narrow, flexible blade held under tension inside a rectangular frame, traditionally made of wood and also called a sash or a gate. The blade sits perpendicular to the frame so the material being cut passes through the frame's open center; frame saws built for wood are rip saws worked either by hand or, in a sawmill, by machine power, while frame saws built for cutting stone were powered saws used in stone mills.
Facts
Introduced When (Circa)Unknown; earliest known depiction is an Italian fresco from c. 1300 1 OriginEarliest known depiction of a framed pit-saw is an Italian fresco from around 1300; how much earlier the design came into use is not recorded 1 Sources
1. Frame Saw (Wikipedia)
Wikimedia FoundationHistory section, on the earliest known depictionQuote, History section, on the earliest known depiction
It is unknown how early framed pit-saws came into use; however, there is an Italian fresco from c. 1300 depicting their use.
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