Pendulum saw
A pendulum saw or swing saw is a mechanically powered circular saw with the blade mounted so it can swing into the material.
Operation
[edit ]A swing saw is used for cross cutting wood in a sawmill, or for cutting ice off of a frozen body of waters. The saw is hung on a swinging arm, sometimes with a counterbalance weight.
A swing saw is also sometimes called a cut-off trim saw in a mill for cutting right angle to the direction of the wood grain. A swing saw is a very dangerous tool, even with a blade guard. Early models were driven by a belt, usually made of leather, that was powered by a water mill or later a steam engine. Today the power source is an electric motor or a gas engine
Harbin International Ice and Snow Sculpture Festival
[edit ]Swing saws are used to carve ice blocks from the frozen Songhua River for the Harbin International Ice and Snow Sculpture Festival each year.[1]
See also
[edit ]References
[edit ]- ^ AFP (13 November 2008). "Ice is money in China's coldest city". The Sydney Morning Herald. Retrieved 26 December 2009.
External links
[edit ]- osha.gov use of Swing Saw
- btsrr.com Model of a Swing Saw
- americanartifacts.com homemade Swing Saw
- flickr.com Swing Saw plans
- westernscalemodels.com Cut-Off Trim Saw model
- chestofbooks.com early Pendulum saw, not circular
- The Encyclopædia Britannica: a dictionary of arts, sciences, Volume 29, page 12 gbook, Pendulum saw
